FCC ID: PY7FF051021 GSM/GPRS 850/900/1800/1900 Module

Confidential INTERFACE DESCRIPTION Document number 1/155 19-KRD 104 1025 Uen 1(31) Revision PA4 EDGE EE5x Interface Specification The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications International. The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Sony Ericsson Mobile Communications International, is strictly prohibited. Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications International, the copyright holder. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 2(31) Revision PA4 Sony Ericsson Mobile Communications International publishes this document without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications International reserves the right to make modifications, additions and deletions to this document due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this document. All rights reserved. Sony Ericsson Mobile Communications International, 2005 Revision Information PA1 Sep 2005 First release Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 3(31) Revision PA4 Contents Part 1 : Overview...............................................................................................4 Introduction..........................................................................................5 1 Target Users........................................................................................6 1.1 Prerequisites........................................................................................6 1.2 1.3 Notation ...............................................................................................6 EDGE Wireless Modem.......................................................................7 2 EDGE Wireless Modem in a Communication System.........................7 2.1 Functional Block Diagram....................................................................9 2.2 2.3 Features ............................................................................................10 2.3.1 Mobile Station Characteristics ...........................................................10 Environmental Conditions..................................................................11 2.3.2 SIM Card ...........................................................................................11 2.4 2.5 Other Features ..................................................................................11 2.6 Precautions........................................................................................11 Part 2 : Daughter Card Description .................................................................12 Mechanical Description .....................................................................13 3 Physical Detail ...................................................................................13 3.1 3.2 Variant Information ............................................................................14 Board Outline.....................................................................................14 3.2.1 System Connector .............................................................................14 3.2.2 System Interface................................................................................15 4 4.1 Overview............................................................................................15 System Connector .............................................................................15 4.1.1 Electrical Interface Detail Format.......................................................18 4.2 Electrical Interface .............................................................................19 5 5.1 Power Interfaces................................................................................19 VIN.....................................................................................................20 5.1.1 3V3 ....................................................................................................21 5.1.2 5.1.3 VREF .................................................................................................21 5.1.4 GND...................................................................................................22 5.2 Status Interfaces................................................................................23 5.2.1 UVP ...................................................................................................23 5.2.2 OVP ...................................................................................................24 5.2.3 RI .......................................................................................................24 LED....................................................................................................25 5.2.4 VREF .................................................................................................25 5.2.5 5.3 Data Communication and Control Interfaces.....................................26 5.3.1 USB Interface ....................................................................................26 5.3.2 P_EN .................................................................................................26 ANTENNA CONNECTOR .................................................................27 5.4 Rudimentary Circuit Functions ..........................................................28 6 Power On Sequence .........................................................................28 6.1 6.2 Power Off Sequence .........................................................................29 USB communications information .....................................................30 6.3 Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 4(31) Revision PA4 Part 1 : Overview Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 5(31) Revision PA4 1 Introduction The EDGE Daughter Card is a total solution designed as an add-in option for integrators of the host product. The Daughter Card comprises of several component parts:

EDGE wireless modem, which is the wireless enabling circuitry integrated on to the Daughter Card PCB together with its mechanical RF shielding RF connector, which provides physical connectivity between the Daughter Card and the antenna which is integrated in to the notebook mechanical housing Voltage regulation circuitry, which converts raw unregulated power from the host battery to the core regulated voltage to the EDGE wireless components System connector, which provided the data, control, power and status interface between the host and the wireless modem SIM connector, a combined connector and retention device for the users Subscriber Identity Module (SIM) card EDGE WIRELESS EDGE WIRELESS CIRCUITRY CIRCUITRY VOLTAGE VOLTAGE REGULATION REGULATION SYSTEM SYSTEM CONNECTOR CONNECTOR RF ANTENNA RF ANTENNA CONNECTOR CONNECTOR DAUGHTER DAUGHTER CARD CARD Figure 1.1-1 EDGE Daughter Card Component Parts SIM SIM CONNECTOR CONNECTOR Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 6(31) Revision PA4 1.1 1.2 Target Users Prerequisites Integration of the EE5x Daughter Card may be performed at facilities under customer management. 1.3 Notation EDGE (Enhanced Data rate for GSM Evolution) is the wireless-enabling technology. The EDGE Daughter Card describes the deliverable product. The EDGE Daughter Card is a PCB assembly with the components described on the previous page integrated on to the board. The complete assembly is reffered in this document as the DC (DC=Daughter Card ). Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 7(31) Revision PA4 2 2.1 EDGE Wireless Modem EDGE Wireless Modem in a Communication System Figure 2.1-1 illustrates the main blocks of a wireless communication system using the EDGE Daughter Card embedded in a host device. It also shows the communication principles of the system. The definitions in the figure, as used elsewhere in this manual, are in accordance with the recommendations of GSM 07.07. The MS (mobile station) represents the EDGE Daughter Card modem plus SIM card. The modem excluding SIM card, is known as the ME (mobile equipment). The TE (terminal equipment) is a micro-controller (i.e., the host) and is a part of the application. Figure 2.1-1 Main Blocks in a Wireless System In accordance with the recommendations of ITU-T (International Telecommunication Union - Telecommunications Standardisation Sector) V.24, the TE communicates with the MS over a serial interface. This is the Universal Serial Bus (USB). The functions of the EDGE modem follow the recommendations provided by ETSI

(European Telecommunications Standards Institute) and ITU-T. ETSI specifies a set of AT commands for controlling the GSM/E-GSM element of the modem; these commands are supplemented by Sony Ericsson specific commands. Figure 2.1-2 Interface between Daughter Card and Application illustrates the interface between the Daughter Card and the host application. Each interface signal is described in Section 3. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 8(31) Revision PA4 HOST EQUIPMENT HOST HOST EQUIPMENT HOST Antenna Antenna Antenna Antenna TE TE TE TE

(DTE)

(DTE)

(DTE)

(DTE) Power Power Power Power Power Power Power Power Communication Communication Communication Communication Control Control Control Control Status Status Status Status S S S S Y Y Y Y S S S S T T T T E E E E M M M M C C C C O O O O N N N N N N N N E E E E C C C C T T T T O O O O R R R R MS MS MS MS

(EDGE

(EDGE

(EDGE

(EDGE MODEM) MODEM) MODEM) MODEM) Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Reg Reg Reg Reg Reg Reg Reg Reg Figure 2.1-2 Interface between Daughter Card and Application SIM SIM SIM SIM Note that ITU-T standards define TE and TA as DTE (Data Terminal Equipment) and DCE

(Data Circuit Terminating Equipment) respectively. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 9(31) Revision PA4 2.2 Functional Block Diagram A function representation of the EDGE duaghter card is included in the figure below. T T R R A A U U DAUGHTER CARD DAUGHTER CARD TEST INTERFACE TEST INTERFACE E E C C A A F F R R E E T T N N I I M M S S I I EDGE MODULE EDGE MODULE L L E E V V E E L L R R E E T T F F H H S S I I T T L L O O V V G G E E R R R R O O T T C C E E N N N N O O C C M M E E T T S S Y Y S S I I R R D D E E L L B B S S U U R R E E W W O O P P S S U U T T A A T T S S R R E E W W O O P P I I G G N N H H C C T T W W S S I I R R O O T T A A L L U U G G E E R R

V V O O T T C C C C S S I I N N O O T T C C E E T T O O R R P P S S R R O O T T A A L L U U G G E E R R E E G G A A T T L L O O V V A A P P V V G G A A T T J J J J E E 6 6 2 2 9 9 M M R R A A E E H H C C A A C C M M A A R R X X M M O O R R D D M M A A R R Y Y e e t t i i L L k k a a e e T T P P S S D D M M O O R R P P M M A A R R P P A A M M D D r r e e t t i i b b r r A A l l a a n n r r e e t t x x E E y y r r o o m m e e M M t t l l p p u u r r r r e e n n o o r r t t n n o o C C t t I I d d e e r r a a h h S S y y r r o o m m e e M M t t 5 5 A A p p y y r r c c n n E E M M S S I I T T R R A A U U I I O O P P G G B B S S U U PROCESSOR BUS PROCESSOR BUS l l i i e e n n n n a a h h C C g g n n d d o o C C t t o o o o B B M M O O R R t t l l p p u u r r r r e e n n o o r r t t n n o o C C t t I I t t r r e e w w o o P P m m g g n n M M e e g g d d i i r r B B e e g g d d i i r r B B r r e e z z i i l l a a u u q q E E i i b b r r e e t t i i V V l l e e c c c c A A M M S S G G r r e e m m T T i i C C F F A A r r e e i i t t s s g g e e R R l l r r e e w w o o P P o o r r t t n n o o C C I I C C S S A A D D N N A A B B E E S S A A B B z z H H k k 2 2 3 3 L L A A T T X X Y Y R R O O M M E E M M I I I I C C S S A A R R E E V V E E C C S S N N A A R R T T F F R R W W A A S S X X R R S S R R E E T T L L F F I I A A N N N N E E T T N N A A R R O O T T C C E E N N N N O O C C F F R R l l a a i i r r e e S S t t r r o o P P t t s s r r u u B B r r e e f f f f u u B B t t s s r r u u B B r r e e f f f f u u B B C C G G A A r r e e i i t t s s g g e e R R X X R R X X T T

t t e e a a S S t t i i e e n n h h c c a a M M C C C F F F A A A C C C A A A D D D L L L L P P z z H H M M 3 3 1 1 O O X X C C V V L L L L P P

S S S D D D C C C D D D A A A A A G G P P C C G G A A C C A A D D d d o o M M D D D O O O M M M C C C A A A D D D l l l l a a i i r r e e S S o o r r t t n n o o C C A A P P M M A A R R A A A P P P C C C A A A D D D I I R R E E T T L L F F P P O O O O L L 2 2

0 0 9 9 4 4

0 0 9 9 4 4

0 0 9 9 2 2

0 0 9 9 C C P P A A V V d d e e x x i i f f C C P P A A V V d d e e x x i i f f H H C C T T W W S S I I r r e e t t i i m m i i l l R R E E V V R R D D I I A A P P V V N N U U L L A A B B s s a a b b i i A A P P I I H H C C T T W W S S T T N N A A Figure 2.2-1 EDGE Daughter Card Functional Block Diagram Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 10(31) Revision PA4 2.3 Features The EDGE modem performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The functions of the modem are implemented by issuing AT commands over a serial interface. 2.3.1 Mobile Station Characteristics The EDGE modem can be configured for single, dual, triple and quad band GSM functionality. The quad band characteristics of the EDGE modem are shown in the following table. EDGE MODEM GSM850 E-GSM900 GSM1800 GSM1900 Frequency range (MHz) TX: 824-849 RX: 869-894 TX: 880-915 RX: 925-960 TX: 1710-1785 RX: 1805-1880 TX: 1850-1910 RX: 1930-1990 Channel spacing Number of channels Duplex spacing Modulation Tx phase accuracy

(burst) Tx Spectrum Due to Modulation Tx Spectrum Due to Switching Transients GSM/GPRS EDGE Nom. Max. 100KHz 200KHz 250KHz 400KHz 100KHz 200KHz 250KHz 400KHz 123 x 8 (TDMA) 173 x 8 (TDMA) 373 x 8 (TDMA) 45MHz 95MHz 298 x 8 (TDMA) 80MHz 200kHz GMSK 8-PSK TBD

<5 rms phase error ; <20 max peak phase error

<+0.5dB

<-30dB

<-33dB

<-58dB

<-23dBm

<-26dBm

<-32dBm

<-36dBm Receiver sensitivity (ANT pin)

<-102dBm

<-102dBm

<-102dBm

<-102dBm Class Nom. Class Nom. Nom.1 Max. f1 f2 Transmitter output power

(ANT conn) GSM EDGE Receiver sensitivity

(ANT connector) Rx Intermodulation F0 = 2f1-f2;

|f2f1| = 800KHz GPRS operation 1 - Design aim Class 4

+33dBm Class E2

+27dBm Class 1

+30dBm Class E2

+26dBm

<-104dBm

<-102dBm

<-104dBm

<-102dBm

<-104dBm

<-102dBm

<-104dBm

<-102dBm

-49dBm

-49dBm Class 10 Note that the number of frequency bands available will be dependant upon the factory configuration. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 11(31) Revision PA4 2.3.2 Environmental Conditions The DC will support the following environmental conditions Temperature Range (Full GSM Specification)1

-10oC to +55oC Temperature Range (Operational) 2 Storage Temperature Range Table 2.3-1 Environmental Conditions

-20oC to +65oC

-20C to +75C Notes 1. Full compliance to Type Approval and Regulatory Approval requirements between these temperature ranges 2. Design Verification Testing (DVT) and Operational compliance between these temperature ranges. 2.4 SIM Card An external SIM card with 3V or 1.8V technology, can be connected to the modem via the SIM interface pins. 2.5 Other Features The EDGE modem supports a number of additional features including 07.10 multiplexing (normal mode) SIM application tool kit 2.6 Precautions The EDGE modem device is ESD protected up to 4K V contact and 8K V air discharge. It is recommended that integrators follow electronic device handling precautions when working with any electronic device system to ensure no damage occurs to the host or the radio device. The EDGE modem is integrated on to the daughter card. When the card is mounted in the host it is the responsibility of the integrator to ensure that static discharge protection beyond the voltages specified above are designed in to the host product. If exposed, the antenna is a vulnerable contact point for ESD. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 12(31) Revision PA4 Part 2 : Daughter Card Description Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 13(31) Revision PA4 3 3.1 Mechanical Description Physical Detail Dimensional details given here are for reference only. For mechanical design data, please refer to the mechanical outline drawings. Figure 3.1-1 Layout Detail (reference only) Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 14(31) Revision PA4 Figure 3.1-2 Layout Detail Reservoir capacitor version (reference only) Variant Information As evident from the preceding section, there is more than one version of the Daughter Card. The /3 version notably differs from the /2 version by the type of system connector and board mounting hole locations. This section will describe in detail the differences between the variants. Board Outline The board outline differences have been made to accommodate the reservoir capacitor. System Connector The system connector mounted on the various versions is summarized in the following table. Additional information on the system connector can be found in section 4.1.1 Variant P/N TBD Connector Lead Free Status Lead Free Connector Type Vertical mount Note: The lead-free status should be considered when selecting the mating FFC/FPC. 3.2 3.2.1 3.2.2 Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 15(31) Revision PA4 4 4.1 System Interface Overview 4.1.1 System Connector All of the systems interface signals flow through a single connector; power, ground, data, cotrol, status and GPIO. Electrical connections to the modem are made through a 24 pin low insertion force (LIF) vertical SMT mount FFC or FPC cable receptor. The connector is a single sided contact type, for example the AVX Elco part 04-6244-024-011-800. Connector type Contact Profile Height (mm) Number of Contacts Current Rating Voltage Rating Dielectric withstanding voltage Contact Material Insulator material Operating temperature FFC/FPC thickness NON-ZIF (LIF) ST SMT Single 4.10 24 0.4A Max. 50V Max. 200Vrms Phosphor bronze Tin-Plated*

Heat resistant plastic 40C~+85C 0.30.05

* Tin-Lead plated on non Pb-free version Table 4.1-1 Connector Characteristics DATUM MARK DATUM MARK PIN 24 PIN 24 PIN 1 PIN 1

(DATUM PIN)

(DATUM PIN) DETAIL A DETAIL A 11.5 11.5 12.6 12.6 DETAIL A DETAIL A 0.2 0.05 0.2 0.05 0.5 TYP 0.5 TYP Figure 4.1-1 Vertical Connector Detail Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 16(31) Revision PA4 Dimension A 11.5

(0.453) B 12.5

(0.492) C 14.5

(0.571) D 16.5

(0.650) Figure 4-2 Right Angle Connector Detail Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 17(31) Revision PA4 Pin Name Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 USB_DN USB differential (-) line USB_DP USB differential (+) line VREF OVP SPARE SPARE SPARE GND GND GND GND GND GND VIN VIN VIN VIN VIN VIN RI 3V3 LED UVP Modem logic voltage reference output from daughter card Over voltage protection output from daughter card Ground Ground Ground Ground Ground Ground Voltage input from host application Voltage input from host application Voltage input from host application Voltage input from host application Voltage input from host application Voltage input from host application Ring Indicator output from daughter card Application reference voltage input to daughter card Pulsing LED output from daughter card Under voltage & short circuit protection output from daughter card P_EN Power ON enable input to daughter card Table 4.1-2 Pin List Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 18(31) Revision PA4 4.2 Electrical Interface Detail Format Details of each electrical interface is contained in paragraph 5 (beginning page 19). The description of each interface follows a common format. An example is shown below:

Interface Name This is the name of the interface; usually this is the actual name found in the pin list;

sometimes this is a collective name for a number of signals, such as the example shown here for a UART. This identifies the basic function of the interface; some interfaces are grouped according to their functional sub-class. The description contains a basic overview of the interface and its functional relationship with the host. All pin numbers associated with the interface are listed; these will not necessarily be in numerical order but may be arranged to coincide with signal name list. All sigal names associated with the interface exactly as shown in the pin list; the signal names also contain information on signal flow direction. This gives specific details, for each signal, of how to terminate the physical connection if it is not required by the host; failure to observe this convention may result in unstable operation of the EDGE modem. (This may not be necessary in the host application since all signals have a defined function). Function:

Description:

Pin Numbers:

Signal Names:

If not used:

Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 19(31) Revision PA4 5 Electrical Interface This section describes each signal line of the electrical interface between the EDGE modem and the host application. A summary of the function of each signal is provided, together with any additional relevant information. Signals are described from the perspective of the EDGE modem and Daughter Card circuitry. Consequently signals described as input are inputs to the modem, driven by the host [hostmodem]. Likewise, signals described as output are driven by the modem in to the host [modemhost]. Bi-directional signal flow (I/O) is indicated by a double-headed arrow [modemhost]. In some instances the [daughter card] will be identified if the modem circuitry is not directly involved, or where additional interface circuitry resides between the host and the modem. Signals which are pulled internally are identified in parentheses beside the signal name as either (PU)=Pulled Up or (PD)=Pulled Down. Signals with no designation are not pulled either way. 5.1 Power Interfaces This section describes the power, ground, and other signals that control or indicate power states. VIN 3V3 VREF GND Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 20(31) Revision PA4 5.1.1 VIN Function:

Daughter card power supply Description:

Primary voltage supply to switching regulator Pin Numbers:

14, 15, 16, 17, 18, 19 Signal Names:

VIN

[hostdaughter card]

If not used:

Required Details:

Power provided by the host will range from 5.5V minimum to a maximum 20.0V. The Daughter Card has on board regulation which regulates the supply range to a steady 3.6V by means of a switching regulator rated at 3A max. The supply voltage range for the monitor mount version, which includes the reservoir capacitor is 4.8V minimum to a maximum of 20.0V. Typical Electrical Characteristics:

Parameter Voltage Transmit mode Power Consumption

(worst case) Idle mode Power Consumption

(worst case) Condition Low Min1 Mid 7.4 High 20.0 Unit V Peak2 w/o reservoir capacitor Peak2 with reservoir capacitor GSM850 2-slot TX GSM850 2-slot TX average GSM850 2-slot TX 1880 1500

<1000

<1000 <1000

<1000 mA 450 340 145 est average DRX 2 9.9 7.6 3.8 est mA 1. Min voltage for /2 and /21 variant is 5.5 V. Min voltage for /3 variant is 4.8 V. 2. Peak current consumption is an instantaneous value which occurs during a TDMA transmitter burst. Table 5.1-1: VIN Electrical Characteristics Note: Any hard copy of this document is for reference only. Due to template and application dependencies the header and footer may fail to display correct data. It is the responsibility of the user to ensure that they have a correct and valid version. Any outdated hard copy is invalid and must be removed from possible use. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 21(31) Revision PA4 5.1.2 3V3 Function:

Daughter card reference voltage Description:

Host reference to protection circuit & USB (3.3V) Pin Numbers:

21 Signal Names:

3V3

[hostdaughter card]

If not used:

Required Details:

The host supplies a 3.3V regulated supply to the Daughter Card for two primary functions

reference supply for the undervoltage / short circuit protection circuitry input for the USB interface Electrical Characteristics:

Parameter Voltage Ripple Condition 5.1.3 VREF Min Nom 3.30 Max 100 Unit V mV Function:

Voltage Reference Description:

Core digital voltage reference from modem. Pin Number:

3 Signal Name:

VREF

[modemhost]

If not used:

Required Details:

VREF is supplied as a reference voltage from the modem. This reference is the modems core digital supply voltage at a nominal 2.80V. The interface is capable of sourcing 200uA and is intended primarily for situations where host interface circuitry is required to be level shifted to maintain wireless modem signal level compatibility. If more current is required by the host, a current amplifier must be implemented. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 22(31) Revision PA4 This signal can also be used to indicate whether the wireless modem is powered on or not. A high level (2.7V to 2.9V) indicates that the modem is powered on. A low level

(<0.5V) indicates that the modem is powered off. All digital logic, except the SIM interface, is characteristic CMOS logic operating at VREF. Electrical Characteristics:

Parameter VREF output voltage VREF output current IOUT Condition inactive active Min 2.70 Typ 0.3 2.80 Max 0.5 2.90 200 Unit V V uA Table 5.1-2: VREF Electrical Characteristics 5.1.4 GND Function:

Ground Description:

Modem common rail Pin Numbers:

8, 9, 10, 11, 12, 13 Signal Name:

GND If not used:

Required Details:

Return path for all currents. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 23(31) Revision PA4 5.2 Status Interfaces Status interfaces indicate or control status features of the modem. UVP OVP RI LED VREF 5.2.1 UVP Function:

Under voltage protection Description:

Status indicator to host of potential malfunction in Daughter Card circuitry Pin Number:

23 Signal Name:

UVP (PD)

[daughter cardhost]

If not used:

Required Details:

The Daughter Card has FET circuitry which uses 3V3 as a reference, driving an output to the host indicating the voltage condition of the of VBAT (the modem supply voltage). A resistive divider connected to VBATT presents a very low Vbe to the UVP transistor. This presents a steady state low voltage output under normal VBAT conditions with external pulldown circuitry. In the event of a short circuit or high current fault condition on the Daughter Card, the voltage drop from the switching regulator will bias the UVP transistor on and present a high output to the host monitoring circuit. The UVP signal should be pulled low by the application circuit for correct function. Electrical Characteristics:

Parameter UVP output voltage Condition Normal Fault Min Typ 3.3 Max 0.5 Unit V V Table 5.2-1: UVP Electrical Characteristics Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 24(31) Revision PA4 5.2.2 OVP Function:

Over voltage protection Description:

Status indicator to host of potential malfunction in Daughter Card circuitry Pin Number:

4 Signal Name:

OVP (PU)

[daughter cardhost]

If not used:

Required Details:

The OVP signal is simply an output from the main onboard regulator. In its operational state under normal functional conditions this will output 3.6V nominal Parameter UVP output voltage Condition Normal Fault Min 3.7 Typ 3.6 Max Unit V V Table 5.2-2: OVP Electrical Characteristics 5.2.3 RI Function:

Ring Indicator Description:

Alert signal from the modem to indicate an incoming SMS, or unmasked unsolicited response Pin Number:

Signal Name:

20 RI

[modemhost]

Leave open If not used:

Details:

Ring Indicator is essentially a wake-up call from the modem to the host application to signal one of two events:

an in-coming message (SMS). an unmasked unsolicited response/result code. For the EDGE modem the Ring Indicator is implemented as a GPIO interface within the EDGE baseband device. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 25(31) Revision PA4 A falling edge indicates an alert or message. The signal remains low for a period of time before going high. An SMS-page or unsolicited response/result code generates one pulse

(the length is configurable using an AT command)[TBC]. The ring indicator is implemented on the daughter card as an open collector transistor output to allow the host the convenience of driving Viao circuitry. 5.2.4 LED Function:

LED Description:

LED-signal indicating a status change Pin Number:

22 Signal Name:

LED

[modemhost]

If not used:

Leave open Details:

The LED is implemented on the Daughter Card as an open collector transistor output which providesa driver level interface to an LED acting as a status indicator for the user. The LED output can be made to blink at a rate pre-determined by modem software. 5.2.5 VREF The function of VREF is already described in 5.1.3. This interface can be used as a status indicator to the host that the modem is still powered. VREF is present whilst the modem is powered and is removed upon the completion of the modem power down. This feature can be useful in the event of a communications lock-up between the host and the daughter card. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 26(31) Revision PA4 5.3 Data Communication and Control Interfaces The serial data and control interfaces consist of the following :

USB P_EN 5.3.1 USB Interface Function:

USB data communication port Description:

USB transmit and receive port for data communication between modem and host. Pin Numbers:

1, 2 Signal Names:

If not used:

Details:

USB_DP (2) [modemhost]

USB_DN (1) [modemhost]

Required The USB interface is designed to USB 1.1 specifications. Details of the specific function of the USB interface can be found in section 6.3. Power to the USB interface is provided by the 3V3 input from the host. 5.3.2 P_EN Function:

Power Enable Description:

Modem power enable control from host Pin Numbers:

24 Signal Names:

If not used:

P_EN Required Details:

[hostdaughter card]

The power enable signal is provided from the host application and is routed to the switching regulator shutdown input and also to the REG_EN (regulator enable) pin on the modem. Assertion of this pin will initiate power up. The P_EN pin is active high and has to be maintained continually in order to keep the modem powered. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 27(31) Revision PA4 5.4 ANTENNA CONNECTOR Function:

Antenna connector Description:

50 ohm wireless antenna connection. Pin Numbers:

N/A Signal Names:

If not used:

ANTENNA Required Details:

The antenna interface to the modem is routed to a low profile coaxial connector on the daughter card. The antenna connector has a nominal impedance of 50 ohms and a maximum frequency rating of 2.5GHz. The connector type is MHF. Mated height is 2.5mm IMPORTANT NOTE:

FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 28(31) Revision PA4 6 Rudimentary Circuit Functions This section contains some rudimentary circuit functions for the sequencing of powering the modem up and down. 6.1 Power On Sequence This sequence illustrates the power on procedure. Figure 6.1-1 Power On Sequence Sequence Detail:

1 VIN and 3V3 are supplied to the modem by the host. These two voltages can be supplied simultaneously when the Daughter Card is required to be powered on. Both voltages must be present before the power on sequence is initiated for the Daughter Card to function correctly. 2 Once VIN and 3V3 voltages are applied the host can enable power up by asserting power enable signal P_EN. The power up process will begin. 3 VREF may be used as an indicator that the modems regulators are powered. tPOn is typically less than 70 ms Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 29(31) Revision PA4 6.2 Power Off Sequence This sequence illustrates the power off procedure. Figure 6.2-1 Power Off Sequence Sequence Detail:

1 The AT+CFUN=4 instruction is sent from the host application to the modem in order to initiate a deregistration sequence. 2 The modem responds to the request with an OK to indicate that deregistration is completed. Deregistration from the network can take from 3-30 seconds. After de-registration has been acknowledged the host application may remove P_EN. 3 The switching regulator output capacitor will gradually discharge until the modem regulators threshold is exceeded. and power down will be complete. VREF may be used as indicator of complete shut down. 4 When the modem has successful shutdown, and VREF has fallen bellow 0.5V then the host may safely remove VIN and 3V3 at any time. However the supplies can remain active without increasing current consumption (typically

<25uA). Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 30(31) Revision PA4 6.3 USB communications information This sequence illustrates USB initialization. 1. The startup sequence begins with the completion of the power up ramping of the VREF signal as described in Power On Sequence. 2. The D+ signal is brought high with the power up of the USB block in the baseband circuitry. This produces the J state indicating to the USB host that a device is attaching. 3. A host initiated SE0 begins the USB protocol transactions. USB enumeration information Using the supplied drivers, the Daughter Card will be identified as a USB peripheral with the following descriptor data:

Device Descriptor:

0x0110 bcdUSB:

0x00 bDeviceClass:

0x00 bDeviceSubClass:

0x00 bDeviceProtocol:

0x40 (64) bMaxPacketSize0:

0x0FCE idVendor:

0xD019 idProduct:

0x202 bcdDevice:

0x00 iManufacturer:

iProduct:

0x00 0x00 iSerialNumber:

bNumConfigurations: 0x01 Confidential INTERFACE DESCRIPT Document number 1/155 19-KRD 104 1025 Uen 31(31) Revision PA4 Eye Diagram for Full Speed USB signaling. The USB link runs at full-speed (12 Mbps). The following diagram is exhibited from compliance testing data.