FCC ID: SRQ-ZM5202 WCDMA Wireless Data Terminal

Hardware Development Guide of Module Product Hardware Development Guide of Module Product Product Model No:ZM5202 Document Version: 2.0 Release Date: 2013-05-31 I All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Legal Information By accepting this certain document of Shenzhen ZTEWelink Technology CO., LTD. (hereinafter referred to as ZTEWelink) you agree to the following terms. If you do not agree to the following terms, please notice that you are not allowed to use this document. The copyright of this document belongs to Shenzhen ZTEWelink Technology CO., LTD. Any rights not expressly granted herein are reserved. This document contains the proprietary information of ZTEWelink. Any reproduction, transfer, distribution, use, or disclosure of this document or any picture, form, data or other information contained in this document, in any form by any means, without the prior written consent of ZTEWelink is prohibited. And are the registered trademarks of ZTE. is the registered trademark of ZTEWelink. ZTEWelink is the wholly owned subsidiary of ZTE and is authorized by the use of the registered trademark of ZTE. ZTEs company product name, logo, and product names referenced herein are either trademarks or registered trademarks of ZTE. Other product and company names mentioned herein may the trademarks or registered trade names of their respective owners. Without the prior written consent of ZTEWelink or the third party owner thereof, anyones access to this document should not be construed as granting, by implication, estopped or otherwise, any license or right to use any marks appearing in this document. The design of this product complies with the requirements of environmental protection and personal security. This product shall be s tored, used or discarded in accordance with product manual, relevant contract or laws and regulations in the relevant country (countries). Information contained in this document is subject to continuous update and modify without further notice due to improvement and update of ZTEWelinks products and technologies. At the same time, ZTEWelink reserves the right to revise and recover this manual at any time. If there are any unknown words in the user manual, please consult the company or agents, distributor in a timely manner. II All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Revision History Version 1.0 Date 2010-04-15 2013-03-20 Description 1st version 1. Delete the part of 3.13 and 3.14 in former version 2. Change Logo of the header, footer and front cover 3. Modify the legal information 4. Modify the Reference document list in chapter 1.3 5. Add the module dimensions of top plane and thickness 6. Modify the chapter 7.7 of Recommended Product Upgrading Plan 7. Modify the Standby current from 3.5mA to 5mA in Table 2-1 8. Modify the peak current from 470mA to 2A and modify the Working temperature from 70 to 75C in Table 2-1 9. Modify the Pin 32-35,64,65,67,68 and description in 2.0 chapter 3.1.3 2013-05-13 10. Modify chapter 3.8.3 to support of 8 wire UART 11. Modify the MODULE_WAKEUP_AP interface application 12. Modify the product test environment in Table 6-2 and 6-4 13. Modify the product test result in Table 6-6 14. Update the Figure 3-1 of PIN Configuration Diagram Modify the Figure 7-2 of Main and AGPS Antenna Welding Pad Interface 15. Modify the Figure 7-1 of Main Antenna RF Connector Interface 16. Modify Figure 2-1 of Product Illustration 2013-05-31 17. Release as Version 2.0 All Rights reserved, No Spreading abroad without Permission of ZTEWelink III Hardware Development Guide of Module Product TABLE OF CONTENTS 1 About This Document ..................................................................................... 1 1.1 1.2 1.3 1.4 2.1 2.2 2.3 2 Application Range ............................................................................................................ 1 Purpose ............................................................................................................................ 1 Supported & Reference Document List ........................................................................... 1 Abbreviations ................................................................................................................... 2 Product Overview ............................................................................................ 3 Mechanic Features .......................................................................................................... 3 Technical Parameters ...................................................................................................... 5 Function Overview ........................................................................................................... 8 2.3.1 Baseband Function .......................................................................................................... 8 2.3.2 Radio Frequency Function ............................................................................................... 8 3 Interfaces ....................................................................................................... 10 3.1 Definition of PINs ........................................................................................................... 10 3.1.1 Definition of PIN I/O Parameters .................................................................................... 10 3.1.2 PIN Configuration Diagram ............................................................................................ 10 3.1.3 PIN Description .............................................................................................................. 11 3.2 3.3 Working Condition .......................................................................................................... 15 Feature of Interface Power Level ................................................................................... 16 3.3.1 Feature of Digital Power Level Signal ............................................................................ 16 3.4 Power Interface .............................................................................................................. 16 3.4.1 Description of Power PINs ............................................................................................. 16 3.4.2 Requirement of Power Supply ....................................................................................... 16 3.5

(U)SIM Card Interface .................................................................................................... 17 3.5.1 Description of PINs ........................................................................................................ 17 3.5.2 Electric Feature .............................................................................................................. 17 3.5.3 Application of (U)SIM Card Interface ............................................................................. 18 IV All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 3.6 SD Card Interface .......................................................................................................... 18 3.6.1 Description of PINs ........................................................................................................ 18 3.6.2 Electric Feature .............................................................................................................. 19 3.6.3 Application of SD Card Interface .................................................................................... 19 3.7 USB2.0 Interface ............................................................................................................ 20 3.7.1 Description of PINs ........................................................................................................ 20 3.7.2 Electric Feature .............................................................................................................. 20 3.7.3 Application of USB Interface .......................................................................................... 20 3.8 Serial Interface ............................................................................................................... 21 3.8.1 SPI (Serial Peripheral Interface) Bus Interface .............................................................. 21 3.8.2 I2C Bus .......................................................................................................................... 22 3.8.3 UART Interface .............................................................................................................. 24 3.9 JTAG (Joint Test Action Group) Interface ...................................................................... 26 3.9.1 Description of PINs ........................................................................................................ 26 3.9.2 Application of JTAG Interface ........................................................................................ 26 3.10 Power-on/Power-off & Reset Signal .............................................................................. 26 3.10.1 Description of PINs ........................................................................................................ 26 3.10.2 Interface Application ...................................................................................................... 27 3.11 Interactive Application Interface ..................................................................................... 28 3.11.1 Description of PINs ........................................................................................................ 28 3.11.2 Interface Application ...................................................................................................... 28 3.12 LED Indicator Interface .................................................................................................. 29 3.12.1 Description of PINs ........................................................................................................ 29 3.12.2 Interface Application ...................................................................................................... 30 4 Electric Feature ............................................................................................. 31 4.1 Power Feature................................................................................................................ 31 4.1.1 Power Supply ................................................................................................................. 31 4.1.2 Working Current ............................................................................................................. 31 4.2 Power-on/Power-off Flow ............................................................................................... 32 All Rights reserved, No Spreading abroad without Permission of ZTEWelink V Hardware Development Guide of Module Product 4.3 Resetting Flow ............................................................................................................... 34 5 Technical Index of Radio Frequency ........................................................... 35 5.1 Technical Index of Radio Frequency under UMTS Mode .............................................. 35 5.1.1 UMTS (WCDMA)............................................................................................................ 35 5.2 5.3 Technical Index of Radio Frequency under GPRS/GSM/EDGE Mode ......................... 35 Technical Parameters of Antenna Testing Console ...................................................... 35 5.3.1 Sourceless Index............................................................................................................ 36 5.3.2 Sourced Index ................................................................................................................ 36 6 Related Test & Testing Standard ................................................................. 37 6.1 6.2 6.3 6.4 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8.1 8.2 7 8 9 VI Testing Reference .......................................................................................................... 37 Description of Testing Environment ............................................................................... 38 Reliability Testing Environment ...................................................................................... 39 Reliability Testing Result ................................................................................................ 40 Design Guide ................................................................................................. 41 General Design Rule & Requirement ............................................................................ 41 Power Supply Circuit Design ......................................................................................... 41 RF Circuit Design ........................................................................................................... 42 7.3.1 RF Antenna Circuit Design ............................................................................................ 42 7.3.2 Precautions During the Initial Design of Antenna .......................................................... 45 Suggestions for EMC & ESD Design ............................................................................. 47 Suggestions for PCB Wielding Panel Design ................................................................ 48 Suggestions for Heat-dissipation Design ....................................................................... 48 Recommended Product Upgrading Plan ....................................................................... 49 Manufacturing Guide .................................................................................... 50 Design of Steel Mesh ..................................................................................................... 50 Furnace Temperature Curve .......................................................................................... 50 FCC Regulations ........................................................................................... 51 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figures Figure 2-1 Product Illustration ....................................................................................... 3 Figure 2-2 Module Dimensions ..................................................................................... 4 Figure 2-3 System Connection Structure ...................................................................... 8 Figure 3-1 PIN Configuration Diagram ........................................................................ 11 Figure 3-2 (U)SIM Card Signal Connection Circuit ...................................................... 18 Figure 3-3 SD Typical Application Circuit .................................................................... 19 Figure 3-4 USB Typical Circuit Application ................................................................. 21 Figure 3-5 SPI Bus Sequence Chart ........................................................................... 22 Figure 3-6 I2C Reference Circuit Diagram .................................................................. 23 Figure 3-7 Module Serial Port & AP Application Processor ......................................... 25 Figure 3-8 The connection of ZM5202 UART and Standard RS-232-C interface ........ 25 Figure 3-9 Module Power-on Plan .............................................................................. 27 Figure 3-10 Recommended Circuit for Power-on/Power-off & Reset........................... 27 Figure 3-11 The output of MODULE_WAKEUP_AP ................................................... 29 Figure 3-12 Reference Circuit of Status Indicator ....................................................... 30 Figure 4-1 Power-on Sequence Chart of ZM5202 Module .......................................... 33 Figure 4-2 Power-off Sequence Chart of ZM5202 Module .......................................... 33 Figure 4-3 Module Resetting Flow .............................................................................. 34 Figure 7-1 Main Antenna RF Connector Interface ....................................................... 42 Figure 7-2 Interface of Main Antenna and AGPS Antenna Welding Pad ..................... 44 Figure 7-3 RF Interface Testing Console (W.FL-R-SMT-1 from HRS) ......................... 44 Figure 7-4 T esting Cable ............................................................................................ 45 Figure 8-1 Recommended Pattern of Steel Mesh on Wielding panel .......................... 50 Figure 8-2 Furnace Temperature Curve Reference Diagram ...................................... 53 Figure 8-3 T esting Result............................................................................................ 53 All Rights reserved, No Spreading abroad without Permission of ZTEWelink VII Hardware Development Guide of Module Product Tables Table 1-1 Supported Document List ............................................................................. 1 Table 1-2 A bbreviation List ........................................................................................... 2 Table 2-1 M ajor Technical Parameters ......................................................................... 6 Table 2-2 Working Frequency Band ............................................................................. 9 Table 3-1 P IN Parameters .......................................................................................... 10 Table 3-2 PIN Interface Definition ............................................................................... 11 Table 3-3 Working Condition ...................................................................................... 15 Table 3-4 Power Level Range of Digital Signal ........................................................... 16 Table 3-5 Definition & Description of (U)SIM Card Signal Group ................................ 17 Table 3-6 Definition of SD Card Signal Interface ......................................................... 18 Table 3-7 Definition of SPI Signal ............................................................................... 21 Table 3-8 Definition of UART Signal ........................................................................... 24 Table 3-9 Definition of JTAG Signal ............................................................................ 26 Table 3-10 Interactive Application Interface ................................................................ 28 Table 3-11 Definition of LED PIN Signal ..................................................................... 29 Table 3-12 Definition of Indicator Status ..................................................................... 30 Table 4-1 Input Voltage .............................................................................................. 31 Table 4-2 Working Current .......................................................................................... 31 Table 4-3 P ower-on/Power-off Time ........................................................................... 33 Table 5-1 Sourceless Index of Main Antenna (Recommended) .................................. 36 Table 6-1 Testing Standard ........................................................................................ 37 Table 6-2 Testing Environment ................................................................................... 38 Table 6-3 Testing Instrument & Device ....................................................................... 38 Table 6-4 R eliability Features ..................................................................................... 39 Table 6-5 Temperature Testing Result Under Windless Environment ......................... 40 Table 6-6 H igh/Low-temperature Running & Storage Testing Result .......................... 40 Table 8-1 Curve Temperature Curve Parameter Setting ............................................. 52 VIII All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 1 About This Document 1.1 Application Range This document is applicable as the hardware development guide of ZM5202 WCDMA module products. The user can design ZM5202 according to the requirement and guidance in this document. It is only applicable for the hardware application and development of ZM5202 WCDMA module products. 1.2 Purpose This document provides the design and development fundamentals for the users of ZM5202. By reading this document, the user can have an overall knowledge of ZM5202 and a clear understanding of the technical parameters. With this document, the user can successfully fulfill the application and development of wireless 3G Internet product or equipment. Besides the product features and technical parameters, this document also provides the product reliability tests and related testing standards, service function implementation flow, RF performance indexes and a guide on the design of user circuits, to provide the user with a complete design reference. 1.3 Supported & Reference Document List Besides the hardware development document, ZTEWelink also provides the board operation guide, software development guide and upgrading plan guide of ZM5202. Table 1-1 is the list of supported documents. Table 1-1 Supported Document List Document Name ZTEWelink ZM5202 Module Specification.pdf ZTEWelink LGA Type Module Dev Board User Guide.pdf ZM5202 Software Development Guide of Module Product.pdf NO. 1 2 3 All Rights reserved, No Spreading abroad without Permission of ZTEWelink 1 Hardware Development Guide of Module Product 1.4 Abbreviations Table 1-2 is a list of abbreviations involved in this document, as well as the English full names. Abbreviations ESD GPRS GSM I/O LED SPI WCDMA UMTS BER DL DPCH DPCH_Ec Table 1-2 Abbreviation List Full Name Electro-Static discharge General Packet Radio Service Global Standard for Mobile Communications Input/output Light Emitting Diode Serial Peripheral Interface Wideband Code Division Multi Access Universal Mobile Telecommunication System Bit Error Rate Downlink Dedicated Physical Channel Average energy per PN chip for DPCH. DPCH SIM Subscriber Identification Module 2 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 2 Product Overview ZM5202 is one WCDMA wireless Internet module with LGA interface. It is widely applied to but not limited to the various products and equipment such as laptops, vehicle-mounted terminals, and e lectric devices, by providing data services. The features of ZM5202 module are described as below. 1. It can support UMTS 850(900)/1900/2100MHz GSM/GPRS/EDGE 850/900/1800/ 1900MHz frequency band. frequency band, and 2. It can provide high-speed data access service under the mobile environment. It provides the SPI interface, I2C interface, (U)SIM card interface (3.0V/1.8V), 3. USB2.0 interface, UART interface, SD2.0 interface, power-on/power-off, and resetting. Figure 2-1 Product Illustration 2.1 Mechanic Features ZM5202 is a 108-pin LGA encapsulation module. Except for the signal PIN, there are many dedicated heat-dissipation ground wielding panel to improve the grounding performance, mechanical strength and heat-dissipation performance. There are altogether 30 heat-dissipation ground wielding panels, evenly distributed at the bottom of PCB. The dimensions of 108-pin LGA encapsulation are 26*36mm, and the height is 2.5+/-0.2mm. The location of PIN 1 is identified by the ground wielding panel with an inclination at the bottom, and its angle orientates to the top All Rights reserved, No Spreading abroad without Permission of ZTEWelink 3 Hardware Development Guide of Module Product welding panel of the corresponding module. Figure 2-2 is a figure about the dimensions of ZM5202 module. Figure 2-2 Module Dimensions

(a)Dimensions on Top plane

(b) Thickness

(c) Bottom 4 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 2.2 Technical Parameters The major features of ZM5202 can be described from the aspects of mechanic feature, base band, radio frequency, technical standard and environment feature. Table 2-1 is a l ist of the major technical parameters and f eatures supported by ZM5202. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 5 Hardware Development Guide of Module Product Name Mechanical Feature Table 2-1 Major Technical Parameters Parameter Item Dimensions Specifications 36mm * 26mm * (2.5+/-0.2)mm Weight About 5.2g Encapsulation type Processor architecture

(U)SIM/SIM LGA package(108 Pin) ARM 9 architecture Standard 6 PIN SIM card interface 3V SIM card and 1.8V SIM card Memory 32MByte/128MByte USB interface USB 2.0 HIGH SPEED Maximum power consumption 1 Voltage Working current2 2.2W DC 3. 4V-4.2V, typical: 3.8V Peak current Average normal working current Average normal working current

(without services) Standby current Baseband 2A (3.8V) note1 150mA (3.8V) note2 75mA 5mA (3.8V) note3 GSM band EDGE/GPRS/GSM: 1900/1800/900/850MHz UMTS band RxDiv Band RF Max. transmitter power

/WCDMA: 2100/1900/850(900)MHz;

NAnote4 UMTS2100/1900/850(900): Power Class 3 (+24dB +1/-3dBm) GSM/GPRS 850MHz/900MHz: Power Class 4 (+33dBm 2dBm) GSM/GPRS 1800MHz/1900MHz: Power Class 1 (+30dBm 2dBm) EDGE 850MHz/900MHz: Power Class E2 (+27dBm 3dBm) EDGE 1800MHz/1900MHz: Power Class E2 (+26dBm

-4/+3dBm) Receiving sensitivity WCDMA2100 : -106.7dBm WCDMA1900/850 : -104.7dBm WCDMA900 : -103.7dBm 6 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Name Hardware Development Guide of Module Product Parameter Item Specifications GSM850/900/1800/1900 : -102dBm Equalization Support Main antenna interface Support Receive diversity

(GPS) antenna interface Data rate Support the GPS wielding panel interface, support the diversity antenna interface; but they are not supported simultaneously. ZTEWelink does not provide the antenna, and the antenna is provided by the third party. GSM CS: UL 9.6kbps/DL 9.6kbps GPRS: Multi-slot Class 10 EDGE: Multi-slot Class 12 WCDMA CS: UL 64kbps/DL 64kbps WCDMA PS: UL 384kbps/DL 384kbps GPRS type Class B Technical Standard 3GPP protocol R99/R5 Windows XP (SP2 and later) Operating system Working temperature Storage temperature Windows Vista Windows 7 Linux Android

-20 to 75 C

-40 to 85 C Humidity 5%~ 95%

RAS dialup SMS Network locking Support Support Optionally support SIM READER Not support Upgrading Support Environment Feature Application All Rights reserved, No Spreading abroad without Permission of ZTEWelink 7 Hardware Development Guide of Module Product Note: 1. Test condition: The value is measured in Max. transmit power. Note 2: Testing condition: The value is measured in transmit power of 0dBm and band of WCDMA 2100MHz. Note 3: Testing condition: The value is measured in cell power of -75dBm and DRX=640. Note 4: NA means unrelated. 2.3 Function Overview 2.3.1 Baseband Function The baseband part of ZM5202 mainly includes the following signal groups: USB signal, (U)SIM card signal, wakeup signal, working status indicator signal, UART signal, SD interface signal, I2C interface signal, module power-on/resetting signal, SPI, main antenna interface, AGPS antenna interface and power-supply interface. Figure 2-3 is a diagram of the system connection structure. Figure 2-3 System Connection Structure USB SIM card SPI UART I2C POWER GND SD Wakeup and Status Indication Main Antenna LGA HSDPA Wireless module AGPS Antenna 2.3.2 Radio Frequency Function The radio frequency function of ZM5202 can be viewed from the aspect of over-the-air wireless bearer network, frequency band, whether the receive diversity feature is supported, and the GPS function. 1. Support WCDMA 850(900)/1900/2100MHz;

2. Support GSM/EDGE/GPRS 850/900/1800/1900 MHz;

8 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 3. Support GPS/AGPS;

The working frequency band of ZM5202 transceiver transmitter is as shown in Table 2-2. Table 2-2 Working Frequency Band Working Frequency Band UMTS850 Uplink Frequency Band Downlink Frequency Band 824 MHz 849 MHz 869 MHz 894 MHz UMTS900 880 MHz 915 MHz 925 MHz 960 MHz UMTS1900 1850 MHz 1910 MHz 1930 MHz 1990 MHz UMTS2100 1920 MHz 1980 MHz 2110 MHz 2170 MHz GSM850 824 MHz 849MHz 869 MHz 894 MHz GSM900 890 MHz 915MHz 935 MHz 960MHz GSM1800 1710 MHz 1785MHz 1805 MHz 1880MHz GSM1900 1850 MHz 1910MHz 1930 MHz 1990MHz All Rights reserved, No Spreading abroad without Permission of ZTEWelink 9 Hardware Development Guide of Module Product 3 Interfaces 3.1 Definition of PINs 3.1.1 Definition of PIN I/O Parameters The definition of ZM5202 I/O parameter is as shown in Table 3-1. Table 3-1 PIN Parameters PIN Attribute Description I O B Z P1 P2 PU PD Input PIN Output PIN Two-way digital port, CMOS input High-resistance output PIN group 1, the power supply voltage is VDD_P1 PIN group 2, the power supply voltage is VDD_P2 PIN internal pull-up PIN internal pull-down A, AI, AO, AIO Analog circuit 3.1.2 PIN Configuration Diagram The PIN sequence of interfaces on ZM5202 is defined as shown in Figure 3-1. 10 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 3-1 PIN Configuration Diagram 3.1.3 PIN Description Table 3-2 PIN Interface Definition All Rights reserved, No Spreading abroad without Permission of ZTEWelink 11 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 Hardware Development Guide of Module Product PIN Signal Definition ANT_MAIN Pin Voltage

GND

JTAG_RESOUT_N P1 PON_RST_N POWER_ON AP_READY I2C_SCL I2C_SDA MODULE_READY P1 P1 P1 P1 P1 P1 P1 10 AP_WAKEUP_MO DULE I/O AI, AO

DI PIN Attribute Main feedback point antenna Ground JTAG reset LGA DI Module reset DI Power-on/Power-off PIN PU/PD Status

Remark Mandatory

Mandatory If it is not used, NC If it is not used, NC PU Mandatory DI Module queries AP

If it is not used, NC sleep status B B I2C clock I2C data DO AP queries Module sleep status

If it is not used, NC If it is not used, NC If it is not used, NC DI AP wakes up Module

Low-power level wakeup. To make the module standby, the primary server needs to raise up this low signal. If it is not used, NC MODULE _WAKEUP_AP P1 DO Module wakes up AP

If it is not used, NC GND NC GND NC NC NC NC MODULE_POWER ON 20 LED_GREEN 21 LED_RED

P1 P1 P1

DO MODULE power-on status indicator

Mandatory

Mandatory

If it is not used, NC AI AI Signal interface Signal interface indicator

If it is not used, NC indicator

If it is not used, NC 12 All Rights reserved, No Spreading abroad without Permission of ZTEWelink PIN Signal Definition 22 LED_BLUE 23 24 25 26 27 VPH_PWR VPH_PWR VPH_PWR VPH_PWR UART_CTS 28 UART_RFR 29 UART_TXD 30 UART_RXD 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 GND Preserved Preserved Preserved Preserved GND ADC GND SPI_CS_N SPI_CLK USB_VBUS GND USB_DP 46 USB_DM P1 P1 P1 P1

P1 P1

SPI_DATA_MI_SO P1 SPI_DATA_MO_SI P1 Hardware Development Guide of Module Product Pin Voltage P1 3.8V I/O PIN Attribute AI AI Signal interface Signal interface indicator indicator PU/PD Status

Remark If it is not used, NC

System power supply, mandatory If it is not used, NC DI(

HV) UART interface CTS signal DO UART Interface RFR

If it is not used, NC signal DO UART interface TXD

If it is not used, NC signal DI UART interface RXD

If it is not used, NC signal Ground

Ground Analog signal input Ground

AI

DO SPI interface channel signal DO SPI clock signal B B AI SPI data IO signal SPI data IO signal USB _VBUS power

AI/

AO AI/

ground USB data cable USB data cable

Mandatory If it is not used, NC Mandatory If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC Pay attention o the power-on sequence of VPH_PWR, mandatory. Mandatory Mandatory Mandatory All Rights reserved, No Spreading abroad without Permission of ZTEWelink 13 Hardware Development Guide of Module Product PIN Signal Definition Pin Voltage PIN Attribute PU/PD Status Remark I/O AO

GND

Ground VREG_RUIM P1/ P2 AO UIM card power 47 48 49 50 51 52 UIM_DATA UIM_CLK UIM_RST UIM_DP 53 UIM_DM 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 GND VREG_SDCC SDCC_CMD SDCC_CLK SDCC_DATA3 SDCC_DATA2 SDCC_DATA1 SDCC_DATA0 SD_DET_N GND Preserved Preserved GND Preserved Preserved GND GPS_ANT GND JTAG_TRST_N JTAG_RTCK JTAG_TCK signal B UIM card data signal DO UIM card clock signal DO UIM card reset signal AI, AO AI, AO

Data signal Data signal Ground AO SD card power B SD signal card control DO SD card clock signal B B B B

SD card data signal SD card data signal SD card data signal SD card data signal NC Ground

Ground

Ground GPS antenna Ground NC NC NC P1/ P2 P1/ P2 P1/ P2 P1/ P2 P1/ P2

P2 P2 P2 P2 P2 P2 P2

P1 P1 P1

Mandatory Mandatory Mandatory Mandatory Mandatory If it is not used, NC If it is not used, NC Mandatory If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC Reserved Mandatory

Mandatory

Mandatory If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC If it is not used, NC 14 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product PIN Signal Definition JTAG_TDO JTAG_TDI JTAG_TMS GND GND 75 76 77 78 79.-

108. Pin Voltage P1 P1 P1

I/O PIN Attribute

NC NC NC Ground Heat-dissipation welder PU/PD Status

Remark If it is not used, NC If it is not used, NC If it is not used, NC Mandatory Mandatory Note: NC indicates Not Connected. That is, there is no connection inside the module. P1 and P2 refer to the power-supply signal level group 1 and 2. 3.2 Working Condition Table 3-3 Working Condition Typical Max 3.8 4.2 Unit V Signal Description Min VPH_PWR Main power supply of the module USB_VBUS Power supply PIN of ADC VDD_P1 VDD_P2 USB PHY Analog input Voltage of PIN group P1 Voltage of PIN group P2 3.4 3.3 0 1.65 5

1.8 5.25 2.2 1.95 2.7 2.85 3 V V V V Note: The typical voltage refers to the default I/O voltage of P1 and P2 PIN group. It is required that the external input PIN provides this voltage. 2. The voltage design of external circuit interfaces should match that of the ZM5202 PINs. 3. When VPH_PWR works within the voltage range, it can reach good whole-set performance. If it is lower than the minimum value, the whole-set performance will be affected, or the module cannot work normally. If it is higher than the maximum value, the module might be damaged. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 15 Hardware Development Guide of Module Product 3.3 Feature of Interface Power Level 3.3.1 Feature of Digital Power Level Signal Table 3-4 Power Level Range of Digital Signal Description Min Max 0.65*VDD_PX VDD_PX+0.3 Units V Signal VIH VIL VOH VOL High level of input voltage Low level of input voltage High level of output voltage Low level of output voltage

-0.3 0.35* VDD_PX V VDD_PX-0.45 VDD_PX 0 0.45 V V 3.4 Power Interface 3.4.1 Description of Power PINs Power VPH_PWR signal (PIN No: 23-26). This is the positive signal of 3.8V power supply. GND signal (PIN No: 2/12/14/31/36/38/44/47/54/63/66/69/71/78). This is the power ground and signal ground of ZM5202, which needs to be connected to the ground on the system board. If the GND signal is not connected completely, the performance of ZM5202 will be affected. Besides, there are altogether 30 heat-dissipation wielding panel with PIN No. 79-108. 3.4.2 Requirement of Power Supply The power supply is recommended to be within the range of 3.4~4.2V. If the network is in poor situation, the antenna will transmit at the maximum power, and the transient maximum peak current under 2G mode can reach as high as 2A. So the power supply capacity for peak current needs to be ab ove 2.5A, and the average peak current needs to be above 0.9A. 16 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 3.5

(U)SIM Card Interface 3.5.1 Description of PINs ZM5202 WCDMA module baseband processor integrates the (U)SIM card interface in compliance with ISO 7816-3 standards, and supports to automatically detect 3.0V/1.8V (U)SIM cards. The signals on SIM card interface is as shown in Table 3-5. Table 3-5 Definition & Description of (U)SIM Card Signal Group PIN Protocol Signal Signal Definition Signal Description 48 49 50 51 52 VREG_RSIM SIM card power Output range: 1.5-3.0V UIM_RST UIM_DATA UIM_CLK SIM card reset PIN SIM card data PIN SIM card clock PIN

UIM_DP Data cable USIM card data signal, applied on a large-capacity SIM card USIM card data signal, applied on a large-capacity SIM card 53 UIM_DM Data cable 3.5.2 Electric Feature On the line close to the (U)SIM card console, be sure to add the ESD circuit protection during the design. To comply with the requirements of 3GPP TS 51.010-1 and EMC authentication, it is recommended to place (U)SIM card console close to the (U)SIM card interface, to prevent the wiring from being too long, which might seriously distort the waveform and thus affect the signal integrity. It is recommended to make the grounding protection for UIM_CLK and UIM_DATA signal wiring. Cascade one 0.1uF and 33pF capacitor between VREG_RSIM and GND, and cascade a 33pF capacitor All Rights reserved, No Spreading abroad without Permission of ZTEWelink 17 Hardware Development Guide of Module Product between UIM_CLK, UIM_RST and GND, to filter out the interference by RF signals. It is recommended to cascade a 20ohm resistance on UIM_DATA cable. 3.5.3 Application of (U)SIM Card Interface Figure 3-2 (U)SIM Card Signal Connection Circuit 3.6 SD Card Interface 3.6.1 Description of PINs The SD card interface of ZM5202 module is the storage card based on FLASH, embedded with 4-bit and 1-bit SD controller, supporting SD and Mini SD cards. Its PIN signals are as shown in Table 3-6. Table 3-6 Definition of SD Card Signal Interface PIN 61 Signal Name SDCC_DATA0 SD card data cable PIN Description Function 60 59 58 57 56 55 SDCC_DATA1 SD card data cable PIN SDCC_DATA2 SD card data cable PIN SDCC_DATA3 SD card data cable PIN SDCC_CLK SD card clock cable PIN SD card data cable SD control clock output can reach up to 20MHz SDCC_CMD SD card control PIN VREG_MMC SD card power

3V 18 All Rights reserved, No Spreading abroad without Permission of ZTEWelink 3.6.2 Hardware Development Guide of Module Product Electric Feature SDCC_CLK: Clock signal, host2device, default is 0~25MHz. SDCC_CMD: Command/response, two-way: the command can sent from the host to a single card/all cards, the response is sent from a single card/all cards to the host. SDCC_DATA[3..0]: Data cable, two-way, default is 0~12.5MB/sec. 3.6.3 Application of SD Card Interface Figure 3-3 is the reference design diagram for the SD interface. The detection of SD card adopts the polling mode of DATA3 signal cable to judge whether T card is inserted or not. Figure 3-3 SD Typical Application Circuit All Rights reserved, No Spreading abroad without Permission of ZTEWelink 19 Hardware Development Guide of Module Product 3.7 USB2.0 Interface 3.7.1 Description of PINs ZM5202 has the high-speed USB2.0 interface, which supports both the full-speed mode and the high-speed mode. The main processor (AP) is connected with the module via the USB interface to transmit data. 3.7.2 Electric Feature The USB interface complies with the USB2.0 specifications and the electric features. USB_DP, USB_DA are wired strictly according to the differential mode, and the length difference between the two cables should be restricted within 1mm. Note: The differential impedance should be controlled within 90ohm. It is recommended to connect to a high-speed common-mode echo filter on the USB differential signal wire. If the cable is exposed to the external environment, it is suggested to add a n ESB protection device. The power capacity of the ESD protection device should be kept within 1.5pF. 3.7.3 Application of USB Interface The USB bus is mainly used in data transmission, software upgrading and modular program detection. Figure 3-4 shows a reference circuit design. 20 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 3-4 USB Typical Circuit Application 3.8 Serial Interface 3.8.1 SPI (Serial Peripheral Interface) Bus Interface 3.8.1.1 Description of PINs The definition of SPI interface signaling is defined as shown in Table 3-7. Table 3-7 Definition of SPI Signal PIN Signal Name SPI_ CS_N SPI_ CLK I/O Type O Function SPI segment O SPI clock SPI_MISO_DATA B Main input, slave output SPI_MOSI_DATA B Main input, slave output 39 40 41 42 3.8.1.2 Electric Feature The SPI bus of ZM5202 is configured as the master equipment, and there are three modes for SPI:

Running mode: Basic running mode. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 21 Hardware Development Guide of Module Product Waiting mode: The waiting mode of SPI is a configurable low-power mode, enabled by the byte of the control registered. In the waiting mode, if the waiting byte is cleared, SPI works under the similar running mode. However, if SPI waits for the position byte, SPI clock stops and enters the low-power status. Stop mode: Under the stop mode, SPI is not available, so the power consumption is reduced. If SPI is configured as the master equipment, any transmission process will be stopped, but it can enter the running mode when the waiting mode stops. Figure 3-5 is the SPI bus sequence chart. Figure 3-5 SPI Bus Sequence Chart 3.8.2 I2C Bus 3.8.2.1 Description of PINs I2C is the two-wire bus for the communication between ICs, which supports any IC process (NMOS, CMOS, dual-polarity). The two signal wires, serial data (SDA) and serial clock (SCL), can transmit information between the connected equipment. Each equipment is identified by the unique address (such as the micro controller, storage, LCD driver, audio DAC or keyboard interface). Due to the different functions of the equipment, it can be used as both the sender and the receiver. 22 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 3.8.2.2 Electric Feature The I2C interface has the following features:

1. The two-wire bus is used for the communication between ICs. 2. It supports any external equipment of any manufacturing technology (1.8V). 3. It supports the external functions, such as the image sensor, micro controller, FM radio chip, LCD chip, audio DAC and keyboard interface. The I2C interface has two working modes with different transmission ratios:

standard mode with a speed as high as 100kbps; high-speed mode with a speed as high as 400kbps. Figure 3-6 is the I2C reference circuit design diagram. Figure 3-6 I2C Reference Circuit Diagram All Rights reserved, No Spreading abroad without Permission of ZTEWelink 23 Hardware Development Guide of Module Product 3.8.3 UART Interface 3.8.3.1 Description of PINs ZM5202 module provides a circuit of serial communication interface UART, which complies with the RS-232 interface protocol, and supports the 8-byte serial bus interface or 2-byte serial interface is Via the UART interface. But the 8-byte serial bus UART interface and the SPI bus interface are not supported simultaneously. The module can perform the serial communication and AT instruction interaction with external. This UART port supports the programmable data width, programmable data stop digit and programmable odd/even checksum, and has an independent TX and RX FIFOs (512 bytes for each). For the normal UART application (non-Bluetooth), the maximum baud r ate is 230400bps, the 4Mbps high baud rate is only used on Bluetooth 2.0 application, and the default baud rate is 115200bps. The PINs are defined as shown in Table 3-8. Table 3-8 Definition of UART Signal PIN Signal Name Description Function 27 28 29 30 40 41 42 39 UART1_CTS UART port CTS clearing sending UART1_RFR UART port RFR preparing to receive UART power level is 1.8V. UART1_TXD UART port TXT sending data UART1_RXD UART port RXD data receiving UART_DTR DTE is ready Ring indicator UART_RI UART_DSR Data is ready UART_DCD Carrier detect

3.8.3.2 Electric Feature During the software interconnection process, there is a method of capturing logs, and it is recommended that this interface be kept during the design and the testing point be reserved. If the module is used together with the application processor, and the PWL matches with 1.8V, the connection mode is as shown in Figure 3-7. The 24 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 4-wire or 2-wire mode can be used for connection. The module interface PWL is 1.8V. If it does not match the PWL of AP interface, it is recommended to add the PWL conversion circuit. The connection of ZM5202 UART port and standard RS-232-C interface can be through the chip like class 232. The design involves the transformation of TTL level and EIA level. We recommend to use the chip of NLSX5014MUTAG. If using the 2-byte serial bus interface, MAX3232 is recommended, and if using the 8-byte serial bus interface, SP3238 or MAX3238 is recommended. The connection mode is as shown in Figure 3-7 Figure 3-7 Module Serial Port & AP Application Processor ZM5202 RXD TXD CTS RFR DTR DSR DCD RI GND TXD RXD RFR CTS DTR DSR DCD RI GND AP Figure 3-8 The connection of ZM5202 UART and Standard RS-232-C interface User Board Female DB9 ZM5202 module UART_DCD UART_DSR UART_TXD UART_CTS UART_RXD UART_RFR UART_DTR UART_RI GND 1.8V

-TTL level translator NLSX5014MUTAG Note:UART_RFR is equal to UART_RTS. translator TTL-

RS232 level SP3238 MAX3238 RS232_DCD RS232_DSR RS232_TXD RS232_CTS RS232_RXD RS232_RTS RS232_DTR RS232_RI GND 1 2 3 4 5 6 7 8 9 All Rights reserved, No Spreading abroad without Permission of ZTEWelink 25 Hardware Development Guide of Module Product 3.9 JTAG (Joint Test Action Group) Interface 3.9.1 Description of PINs The JTAG interface complies with the ANSI/ICEEE Std. 1149.1-1990 standard, and the interface is defined as shown in Table 3-9. Table 3-9 Definition of JTAG Signal PIN Signal Name I/O Type Function 3 72 73 74 75 76 77 78 JTAG_RESOUT_N DI LGA reset JTAG_TRST_N DI-PD JTAG reset JTAG_RTCK DO JTAG return clock JTAG_TCK JTAG_TDO JTAG_TDI JTAG_TMS DI-PU JTAG clock input Z DI-PU DI-PU JTAG test data output JTAG test data input JTAG test mode select GND

Grounding 3.9.2 Application of JTAG Interface On the system board, you need to reserve the testing point or interface of the related JTAG signal, so as to solve the un-repairable fault of LGA module due to emergencies such as downloading interruption. 3.10 Power-on/Power-off & Reset Signal 3.10.1 Description of PINs The power-on process of ZM5202 module is: Push the POWER_ON PIN for more than 50ms, pull this PIN upward and then power on. Under the power-on status, push POWER_ON PIN for more than 5s, then pull this PIN higher, and then power off. Within the module, POWER_ON PIN is pulled via a 200 K resistance to 1.8V power. To power on, if it does not need to be powered down, process POWER_ON according to the figure below. 26 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 3-9 Module Power-on Plan PON_RST_N PIN is used to reset the module. After pushing PON_RST_N PIN for 50ms, pull it higher again and then reset the module. 3.10.2 Interface Application The POWER_ON and PON_RST_N circuits can refer to the design circuit as shown in Table 3-9. In this figure, the two input signals on t he left are the input control signals for reset and power-on respectively. Figure 3-10 Recommended Circuit for Power-on/Power-off & Reset All Rights reserved, No Spreading abroad without Permission of ZTEWelink 27 Hardware Development Guide of Module Product 3.11 Interactive Application Interface 3.11.1 Description of PINs Table 3-10 mainly describes the interfaces interacting with the application processor, including the following three types of interfaces: querying, wakeup and status indication. Table 3-10 Interactive Application Interface PIN Signal Name I/O Type Function 6 9 10 11 19 AP_READY MODULE_READY DI DO Module querying AP sleep status AP querying Module sleep status AP_WAKEUP_MODULE DI AP wakeup Module MODULE _WAKEUP_AP DO Module wakeup AP MODULE_POWERON DO MODULE power-on status indication 3.11.2 Interface Application The ZM5202 module provides 5 handshake signals for the communication with the application processor (AP). By MODULE_POWERON, AP can query whether LGA is powered on and is working normally. By MODULE_READY, AP queries whether the LGA module has entered the sleep status, wakes up the module under the sleep status by AP_WAKEUP _MODULE. In the same way, when AP is in the sleep status, the LGA module can query the AP status by AP_READY, and wakes up AP by MODULE _WAKEUP_AP. AP_READY: Indicates that the AP server is sleep: the high PWL indicates the sleep status, and the low PWL indicates the wakeup status. MODULE_READY: Indicates that the module is sleep: the high PWL indicates the sleep status, and the low PWL indicates the wakeup status. AP_WAKEUP_MODULE: After the module has entered the sleep status, the AP server can wake up the module by the low PWL control; if its always on the low 28 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product PWL, the module cannot enter the sleep status. After the AP server enters the high PWL, the module enters the sleep status. MODULE_WAKEUP_AP: Make sure that the function of remote wake up is enabled in the config file. When a S MS or call is receiving, the output level of this pin is shown in the following figure: low for 2shigh for 15slow for 2shigh for 15slow for 2s before return its default high level to wakeup the AP side. Figure 3-11 The output of MODULE_WAKEUP_AP MODULE_POWERON: After the module is powered on, this signal is set to high, and kept until the system is restarted or powered down. Low signal indicates that the server is not powered on, during the power-on process or is being restarted. 3.12 LED Indicator Interface 3.12.1 Description of PINs Table 3-11 Definition of LED PIN Signal PIN Signal Name I/O Type Function 20. 21. 22. LED_GREEN LED_RED LED_BLUE AI AI AI Module signal indicator interface Module signal indicator interface Module signal indicator interface All Rights reserved, No Spreading abroad without Permission of ZTEWelink 29 Hardware Development Guide of Module Product 3.12.2 Interface Application The LGA module has three PINs to control the LED indicator, used to indicate the network connection status. The different modes of status indicator flashing indicate different network statuses. All the three PINs use the current sink type of current source for control, which connects to the negative end of LED and connects to VPH_PWR externally, to directly drive LED. Figure 3-12 is the reference circuit design diagram. The flashing of indicator is controlled by the switch of RF, and the LED PIN transmits the control signal to the external. The indicator status is as defined in Table 3-12. If the RF control is not needed, the AP server can design the status of control indicator by itself. Figure 3-12 Reference Circuit of Status Indicator Table 3-12 Definition of Indicator Status Indicator Status Module Working Status RED indicator always on Not registered to the network GREEN indicator always on Have been registered to 2G network GREEN indicator flashing Have been registered to 2G network, and there is data service as well. BLUE indicator always on Have been registered to 3G network BLUE indicator flashing Have been registered to 3G network, and there is data service as well. 30 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 4 Electric Feature 4.1 Power Feature 4.1.1 Power Supply The input voltage range of ZM5202 is DC 3.4V~4.2V, and the typical value is 3.8V, as shown in Table 4-1. Table 4-1 Input Voltage Min 3.4V Typical 3.8V Max 4.2V Parameter Input voltage 4.1.2 Working Current The working current range of ZM5202 is as shown in Table 4-2. The IDLE mode indicates the power consumption of the module when there is no service. The table also provides the working current range under GSM and WCMA mode when there is data service. Table 4-2 Working Current Mode GSM Status Average Remark With no service 75mA IDLE mode With data transmission 380mA GPRS/EDGE mode WCDMA With no service 75mA IDLE mode With data transmission 470mA HSPA mode Note: The above average current is acquired under the maximum transmission power. Under different environments, the testing results might be slightly different. Take the actual situation as the reference. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 31 Hardware Development Guide of Module Product 4.2 Power-on/Power-off Flow To guarantee the user can power on and power off stably, you can refer to the power-on sequence chart as shown in Figure 4-1 and the power-off sequence chart as shown in Figure 4-2. Table 4-3 shows the power-on and resetting time, which needs to be paid attention to during the module power-on process. 1. Once VPH_PWR is powered on, the POWER_ON signal will be synchronized and be established as the high PWL. 2. After VPH_PWR is established normally, the interval between it to the POWER_ON signal cannot be too short. Refer to T2 parameter. ZTEWelink recommends that VPH_PWR adopt the power-off plan that does not disconnect the power supply. 3. The power-on startup time takes the lower level of POWER_ON as the starting point, and POWER_ON needs to be released after being kept on the low PWL for a period. 4. SUB_VBUS is the USB PHY power supply. It is not recommended to be established before VPH_PWR. During the process of establishing the module PINs, pay attention to the following items:

1. To power off by the POWER_ON signal, the T4 period needs to be designed as required. 2. After VPH_PWR and USB_VBUS are powered off, it is recommended not to disconnect the power supply. 32 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 4-1 Power-on Sequence Chart of ZM5202 Module T1 VPH_PWR USB_VBUS T3 POWER_ON T2 VPH_PWR USB_VBUS POWER_ON Parameter T1 T2 T3 T4 T5 Figure 4-2 Power-off Sequence Chart of ZM5202 Module T5 T4 Table 4-3 Power-on/Power-off Time Description From powering on VPH_PWR to establishing USB_VBUS From powering on VPH_PWR to Power-on taking effect The period that the Power-on signal for power on operation is kept on the low PWL The period that the Power-on signal for power off operation is kept on the low PWL From the releasing the Power-on button for power off operation to the power off of VPH_PWR and USB_VBUS Min 0 Typical Max 0.5 1 Unit second 1 1.5 0.05 0.1

second second 4 1 5 2

second

second All Rights reserved, No Spreading abroad without Permission of ZTEWelink 33 Hardware Development Guide of Module Product 4.3 Resetting Flow The PON_RST_N reset signal of ZM5202 module is the increasing resetting, so it is reset after decreasing this PIN by 100ms. Figure 4-3 is the module resetting flow. Figure 4-3 Module Resetting Flow PON_RST_N 100ms 1 0 34 All Rights reserved, No Spreading abroad without Permission of ZTEWelink 5 5.1 Hardware Development Guide of Module Product Technical Index of Radio Frequency Technical Index of Radio Frequency under UMTS Mode 5.1.1 UMTS (WCDMA) The RF index should be tested strictly in accordance with the related testing specifications of 3GPP. The RF indexes of UMTS2100/1900/850 should satisfy the requirements of 3GPP TS 34.121 protocol. 5.2 Technical Index of Radio Frequency under GPRS/GSM/EDGE Mode The RF indexes of GSM/GPRS/EDGE850/900/1800/1900 should satisfy the requirements of 3GPP TS 05.05 protocol. 5.3 Technical Parameters of Antenna Testing Console ZM5202 supports the AGPS function, so the system equipment needs to add the AGPS antennal. The design of AGPS antenna is consistent with that of the main antenna, and its efficiency index can be 3dB lower. The separation degree between the main antenna and the diversity antenna is required to be greater than 12dB. The antenna index is divided into the sourceless index and s ourced index. The sourceless index includes S11, efficiency, gains, orientation diagram and polarity, which can be used as the parameter measuring the performance of the antenna itself. The sourced index is also called the OTA index, including TRP (all-round radiation power), TIS (all-round receiving sensitivity), radiation orientation diagram, which is an important index measuring the radiation performance of the whole set

(including the antenna, module, circuit main board). All Rights reserved, No Spreading abroad without Permission of ZTEWelink 35 Hardware Development Guide of Module Product 5.3.1 Sourceless Index The sourceless indexes of antenna are different according to the different requirements of wireless Internet products. Here, taking the 3G Internet notepad as an example, the sourceless index of the antenna is recommended to reach the standards as described below. Table 5-1 Sourceless Index of Main Antenna (Recommended) Frequency Band VSWR in Free Space Peak Gain in Free Space 3-D Average Gain in Free Space Antenna Efficiency 824-960MHz

<3:1 1710-2170MHz

<3:1

>0dBi

-3dBi

>50%

>0dBi

-3dBi

>50%

5.3.2 Sourced Index indexes of antenna are different according The sourced the different requirements of the product type. Here, taking the 3G Internet notepad as an example, the sourced index of the antenna is recommended as below. to TRP: <W850/W900/W1900/W2100>18dBm;

GSM850>27dBm, GSM900>27dBm;

DCS1800>24dBm, PCS1900>24dBm>;

TIS: <W850/W900<-100dBm; W1900/W2100<-103dBm;

GSM850<-100dBm, GSM900<-100dBm;

DCS1800/PCS1900<-102dBm. 36 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 6 Related Test & Testing Standard 6.1 Testing Reference The related tests of ZM5202 comply with the IEC standard, including the equipment running under high/low temperature, temperature shock and EMC. Table 6-1 is the list of testing standard, which includes the related testing standards for ZM5202. temperature, storage under high/low Testing Standard IEC6006826 Table 6-1 Testing Standard Document Reference Environmental testing-Part2.6:Test FC: Sinusoidal Vibration IEC60068234 Basic environment testing procedures part2. IEC60068264 IEC60068214 IEC60068229 IEC6006822 IEC6006821 GB/T 15844.2 GB/T 2423.17 GB/T 2423.5 GB/T 2423.11 Environmental testing-part2-64: Test FH: vibration, broadband random and guidance. Environmental testing-part 2-14: Test N:change of temperature. Basic environmental testing procedures-part2: Test EB and guidance. Environmental testing-part2-2:Test B:dry heat Environment testing-part2-1: Test A: cold. MS telecommunication RF wireless phone-set environment requirement & experimental method part 4: Strict level of experimental condition Basic environment experiment of electronic products-Experiment Ka: Salt mist experiment method Basic environment experiment of electronic products-Part2:Experiment method Try Ea & Introduction:

Shock Basic environment experiment of electronic products-Part2:Experiment method Try Fd: Broad frequency band random vibration (General requirement) TIA/EIA 603 3.3.5 TIA Standard-part3-5:Shock Stability Note: 1. IECL International Electro technical Commission; 2. GB/T: Recommended national standard All Rights reserved, No Spreading abroad without Permission of ZTEWelink 37 Hardware Development Guide of Module Product Description of Testing Environment 6.2 The working temperature range of ZM5202 is divided into the normal working temperature range and the extreme working temperature range. Under the normal working temperature range, the testing result of RF complies with the requirements of 3GPP specifications, and its function is normal. Under the extreme temperature range, the RF index basically complies with the 3GPP specifications, and the quality of data communication is affected to a certain extent, but its normal function is not affected. ZM5202 has passed the EMC test. Table 6-2 is the requirement for the testing environment, and Table 6-3 lists out the instruments and devices that might be used during the test. Table 6-2 Testing Environment Min Max Remark Temperature

-20C Temperature 75C

-40C 85C Working Condition Normal working condition Extreme working condition Storage

-40C 85C All the indexes are good. Some indexes become poorer. Storage environment of ZM5202 Table 6-3 Testing Instrument & Device Testing Item RF test Instrument & Device Comprehensive testing device RF cable Tower antenna Microwave darkroom High/Low-temperature running & storage test High/Low-temperature experimental box Temperature shock test Temperature shock experimental box Vibration test Vibration console 38 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 6.3 Reliability Testing Environment The reliability test includes the vibration test, high/low-temperature running, high/low-temperature storage and temperature shock experiment test. Refer to Table 6-4 for the specific parameters. Table 6-4 Reliability Features Testing Item Testing Condition Random vibration Temperature shock High-temperature running Low-temperature running Frequency range: 5-20Hz, PSD:1.0m2/s3 Frequency range: 20-200Hz,

-3dB/oct 3 axis, 1 hour for each axis Low temperature: -40C 2C High temperature: +80C 2C Temperature changing period: less than 30seconds Test duration: 2 hours Cycle: 10 Normal high temperature: 75 C Extreme high temperature: 85C Duration: 24 hours Normal low temperature: -20C Extreme low temperature: -40C Duration: 24 hours High temperature

& high humidity Temperature: +60C Humidity: 95%

Duration: 48 hours High temperature storage:

Temperature: 85C Duration: 24 hours Low temperature storage:

Temperature: -40C Duration: 24 hours Testing Standard IEC 68-2-6 IEC 68-2-14 Na ZTE standard ZTE standard ZTE standard IEC 68-2-1 Ab IEC 68-2-2 Bb All Rights reserved, No Spreading abroad without Permission of ZTEWelink 39 Hardware Development Guide of Module Product 6.4 Reliability Testing Result Table 6-5 Temperature Testing Result Under Windless Environment Mode Temperature Voltage Transmission Power

+25

(3.810%)V Max Duration Testing Result Pass 1hour

+25

(3.810%)V Max 1 hour Pass GPRS Class 10 EDGE Class 12 WCDMA +25

(3.810%)V Max 1 hour Pass Table 6-6 High/Low-temperature Running & Storage Testing Result Testing Item Testing Condition &

Standard Testing Content Testing Result Random vibration Temperature shock Low-temperature working High-temperature working Extreme low-temperature working Extreme high-temperature working Low-temperature storage High-temperature storage Refer to Table 6-4 RF test & function Pass test Refer to Table 6-4 RF test & function Pass test Refer to Table 6-4 RF test & function test Refer to Table 6-4 RF test & function test Refer to Table 6-4 RF test & function Pass Pass Pass test Refer to Table 6-4 RF test & function Pass test Refer to Table 6-4 RF test & function test Refer to Table 6-4 RF test & function test Pass Pass 40 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 7 Design Guide This chapter provides the general design guide for ZM5202, used as a reference for the user during the design process, so that the product can reach better performance. 7.1 General Design Rule & Requirement When the user is designing the peripheral circuits of ZM5202, he needs to first guarantee that the external circuit has the sufficient power supply capability, and the USB of high-speed signal cable is required to have 90ohm differential resistance. For the common signal interface, it is required to design according to ZTEWelink requirements, which needs to comply with the power level of interface signal, so as to prevent the impedance from damaging the module. The RF index of this product itself is good, and the user needs to design the antenna circuit of the main board and make the corresponding impedance control. Otherwise, the RF index of the whole set will be affected. 7.2 Power Supply Circuit Design It is required that the power supply capability of VPH_PWR on the system board reach 2.5A or above, so as to satisfy the requirement of peak current on the module. And the average current of the power on the system side should also reach 0.9A or above. The power cable on the system board should be thick enough, and should form a good reflux with the ground. Besides, in the power supply circuit design, the user needs to add the large storage capacitor on the kilo level, to guarantee the transient power supply capability. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 41 Hardware Development Guide of Module Product 7.3 RF Circuit Design 7.3.1 RF Antenna Circuit Design There are two interfaces on the RF antenna of ZM5202: main antenna interface, and GPS antenna. The main antenna supports two access modes of RF signal: by PDA wielding panel mode and by RF connector mode. The GPS antenna only supports the access mode of LGA wielding panel. Figure 7-1 is the main antenna connector interface, and Figure 7-2 Interface of Main Antenna and AGPS Antenna Welding Pad Figure 7-3 shows the interface between the antenna and the GPS antenna. Currently, ZTEWelink adopts the W.FL-R-SMT-1 RF connector testing console from HRS company, as shown in Figure 7-1 Main Antenna RF Connector Interface 42 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product All Rights reserved, No Spreading abroad without Permission of ZTEWelink 43 Hardware Development Guide of Module Product Figure 7-2 Interface of Main Antenna and AGPS Antenna Welding Pad Figure 7-3 RF Interface Testing Console (W.FL-R-SMT-1 from HRS) If the main antenna is access by the RF connector, the corresponding cables of RF interface are recommended to use the W.FL-LP-04N of HRS company, as shown in Figure 7-4. When this connection mode is adopted, the antenna RF connector can be directly inserted to the RF testing console of the module, so it saves the connection between the RF port and the antenna interface. 44 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 7-4 Testing Cable If the main antenna is accessed by the PDA wielding panel, the RF main antenna wield pane of the module itself needs to be connected to the antenna interface on main board via the wield pane and micro stripline or stripline. The micro stripline or stripline is designed according to the 50ohm impedance, and the dual-L model matching circuit is reserved. For the different terminal products, the dimensions are different, the requirements for the antenna performance are different, so the size and location of antenna are different as well. Taking the 3G Internet notepad as an example, its antenna space is recommended to be above 7mm*10mm*100mm, and be placed above the top of LCD screen. The design of AGPS antenna is consistent with the main antenna, and its efficiency index is allowed to be 3dB lower. The separation degree between the main antenna and the diversity antenna is required to be greater than 12dB. 7.3.2 Precautions During the Initial Design of Antenna 7.3.2.1 Preliminary Evaluation When choosing the antenna position, make sure that the antenna and the base station are kept on the horizontal level, so as to reach the highest efficiency. Then, avoid the place the antenna close to the switch power or data cable, chip or another device that might result in electromagnetic interference. Place the antenna in a location that the hand cannot reach, to prevent from the attenuation generated by the body. Also take into consideration the reduction of radiation and the feasibility of All Rights reserved, No Spreading abroad without Permission of ZTEWelink 45 Hardware Development Guide of Module Product its structure. Therefore, during the initial design, make the layout evaluation with the structure, ID, circuit and antenna engineers together. 7.3.2.2 Suggested Antenna Location For the notepad, the ideal location position for the antenna is on the left corner or right corner of LCD, because this position is relatively far away from the main board, so the electromagnetic interface is little. Besides, this position is relatively far away from the human body, so the SAR index can be easily satisfied. Another suggested position is on the left or right of LCD. For the other products such as the router or electronic book, make the evaluation according to the feature of the product itself. 7.3.2.3 Suggested Antenna Occupancy Space As different antenna manufacturers might adopt different antenna modes, the reserved space of the antenna is also different. Taking the 3G Internet laptop as an example (coverage frequency: W2100/W1900/W900/W850, GSM850/GSM900/

GSM1800/GSM1900), it is recommended to set the antenna size as 5mm (width) *

12mm (width) * 80mm (length). 7.3.2.4 Main Board Layout The interference on the main board area is very strong. According to the testing result, when the module is placed in these interference areas, its performance becomes poorer. When designing the notepad, its better to separate the module form the main board PCB, instead of installing the module on the main board. If they are not separated, the module should better be far away from the chip, storage, power interface, data cable interface and other module or device that might generate EMI. 7.3.2.5 Antenna RF Connection Cable The RF connection cable of the antenna should better be short. Taking consideration of the transmission power los, it is recommended to adopt a thicker RF cable. At the same time, the RF cable should better be far away from FSB, chip and storage, power interface, data cable interface, and other modules or devices that might generate EMI. The connection antenna and the RF connection cable of 46 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 3G module cannot go on the right angle, cannot be crushed or worn. The RF cable should better be wired close to the ground of main board. 7.3.2.6 Matching Circuit of Antenna If the module RF interface needs to be transferred with the antenna interface, when designing the main board circuit, the micro stripline or stripline between the module RF testing console and the antenna interface RF testing console should be designed by the 50ohm impedance, and the dual-L model matching circuit is reserved. If the antenna RF connector is directly inserted to the module RF testing console, the transfer between the module RF port and the antenna interface can be saved. 7.3.2.7 Type of Antenna RF Cable & RF Connector The antenna RF connection cable usually adopts GBE(TW) and Shenyu (Mainland), or Japanese Somitomo and Shin Din. The antenna RF cable usually adopts a line width of 1.37mm. The antenna RF connector usually adopts Japanese IPX, or HRS, while the price of the latter is higher. 7.4 Suggestions for EMC & ESD Design During the design of the whole set, the user needs to fully consider the EMC problem caused by the signal integrity and power integrity. During the layout and wiring of peripheral circuits, for the wiring of power and signal cables, keep a distance of 2 t imes of the line width, so as to effectively reduce the coupling between signals and keep a clean reflux path for the signal. During the design of peripheral power circuits, the de-coupled capacitor should be placed closed to the module power PIN, the high-frequency high-speed circuit and the sensitive circuit should be placed far away from the border of PCB. They should better be separated during layout, so as to reduce the interference between them and protect the sensitive signal. For the circuit or device on the side of system board that might interfere the module, it should be shielded during design. ZM5202 is embedded on the side of system board, so the user needs to make the ESD protection during design. For the key input/output signal interface, such as the All Rights reserved, No Spreading abroad without Permission of ZTEWelink 47 Hardware Development Guide of Module Product

(U)SIM card signal interface, the ESD device should be placed closely for protection. Besides, on the side of main board, the user should reasonably design the structure and PCB layout, guarantee that the metallic shielding shell is fully grounded, so as to leave a smooth discharge channel for ESD. 7.5 Suggestions for PCB Wielding Panel Design When the user is designing the encapsulation wielding panel on main board, the 30 heat wielding panels in the center are recommended to be designed according to the dimensions as described in Figure 2-1. The surrounding 78 wielding panels should be extended by more than 0.3mm, and the other three sides of the wielding panel are extended by 0.05mm. For the right angles of wielding panels for the main antenna PIN1 and A GPS antenna PIN70, they are recommended to be r ounded into a round angel with a radius of 0.3mm. In this way, it is convenient for the import of interference and the radiation of RF signal. 7.6 Suggestions for Heat-dissipation Design The module will dissipate heat during the working process, and might also be affected by other high-temperature devices. The heat dissipation is taken into full consideration during the product design, as 30 heat wielding panels are reserved in the center of the module. During the connection with the system board, make sure that these wielding panes are grounded well, which is greatly helpful to heat conductivity and heat balance, and is greatly beneficial to the electric performance of the whole set as well. Note:

1. Keep this product away from heat-dissipation devices with high power, to prevent the temperature of the module from being too high. 2. Do not put the module close to the large heat-dissipation devices, such as CPU or bridge. The high temperature will affect the RF performance. 48 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product 7.7 Recommended Product Upgrading Plan Its recommended to use the one-click software upgrade tool to upgrade through the USB port provided by ZTEWelink in the Windows system. If the customer wants to upgrade the module in other operation systems, ZTEWelink provides the corresponding reliable tools too. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 49 Hardware Development Guide of Module Product 8 Manufacturing Guide 8.1 Design of Steel Mesh During the design of steel mesh, note:

1. When manufacturing the steel mesh of thermal pad on the bottom of the module, narrow the mouth of the steel mesh to 75% of the original size, so as to reduce the risk of shortcut between the module thermal and the peripheral PINs. This method is effective. 2. It is recommended to design to the mouth of steel mesh on the thermal pad wielding panel to the lattice form. Figure 8-1 shows the recommended pattern for the steel mesh. Figure 8-1 Recommended Pattern of Steel Mesh on Wielding panel 8.2 Furnace Temperature Curve The furnace temperature curve greatly affects the wielding quality and the material status, so it needs to be paid great attention to. The temperature increasing speed cannot be too fast, with the increase speed from the room temperature to 150 less than 3/second. At the same time, if the temperature is above 217, the duration should be kept within 70 seconds, while the interim value 55 seconds is ideal. Otherwise, the great temperature shock will make certain devices ineffective, causing the quality to decrease and the maintenance difficulty to increase. At the same, keep the precise maximum temperature to be below 245, as certain materials (such as the crystal) might crack under the high temperature and wont not vibrate any more, so the product function is affected. Refer to Table 8-1 for the setting of furnace temperature curve, refer to Figure 8-2 for the furnace temperature 50 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product curve, and refer to Figure 8-3 for the testing result. Figure 8-2 and Figure 8-3 are only a reference, and refer to Table 8-1 for the detailed requirements. 9 FCC Regulations:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This device has been tested and found to comply with the limits for a Class B digital device , pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiated radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-Reorient or relocate the receiving antenna.

-Increase the separation between the equipment and receiver.

-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help. Caution: Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. RF Exposure Information This device complies with FCC radiation exposure limits set forth for an uncontrolled environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20cm (8 inches) during normal operation. IMPORTANT NOTE This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance requirement of the end product, which integrates this module. 20cm minimum distance has to be able to be maintained between the antenna and the users for the host this module is integrated into. Under such configuration, the FCC radiation exposure limits set forth for an population/uncontrolled environment can be satisfied. All Rights reserved, No Spreading abroad without Permission of ZTEWelink 51 Hardware Development Guide of Module Product Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. USERS MANUAL OF THE END PRODUCT:

In the users manual of the end product, the end user has to be informed to keep at least 20cm separation with the antenna while this end product is installed and operated. The end user has to be informed that the FCC radio-frequency exposure guidelines for an uncontrolled environment can be satisfied. The end user has to also be informed that any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment. If the size of the end product is smaller than 8x10cm, then additional FCC part 15.19 statement is required to be available in the users manual: This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation. LABEL OF THE END PRODUCT:

The final end product must be labeled in a visible area with the following " Contains TX FCC ID:

SRQ-ZM5202". If the size of the end product is larger than 8x10cm, then the following FCC part 15.19 statement has to also be available on the label: This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation. Table 8-1 Curve Temperature Curve Parameter Setting Lead-free Curve Temperature Curve Phase Temperature Duration Pre-heat Temperature is increased from room temperature to 150 Temperature increasing ratio

<3/second Temperature keeping 150~200 40~110 seconds Wielding Greater than 217 40~70 seconds Above 230 15~45 seconds Peak temperature MAX: 245 MIN: 230 52 All Rights reserved, No Spreading abroad without Permission of ZTEWelink Hardware Development Guide of Module Product Figure 8-1 Furnace Temperature Curve Reference Diagram Figure 8-2 Testing Result All Rights reserved, No Spreading abroad without Permission of ZTEWelink 53