FCC ID: 2ANOG-A97L Wireless Smart Audio Module with Bluetooth and WiFi

Wireless Smart Audio Module Datasheet

(A97L) User Manual Rev. 1.2 September 12, 2021 FCC ID:2ANOG-A97L Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Version Date Description 03/25/2019 Datasheet Release 04/01/2019 Update pin definition and Wi-Fi module 07/23/2019 Update pin definition, Wi-Fi module Conversion to On-board Design HISTORY 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 09/17/2019 Update Components High Limit 10/22/2019 Update detailed dimensions 11/05/2019 Update pin definition 11/28/2019 Add physical photos of modules 04/10/2020 Update physical photos of modules 04/28/2020 Update pin definition 02/09/2021 Update parameters 03/25/2021 Update pin description 06/28/2021 Update pin description Document No.: WMB20200428 Page 2 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 INDEX 1. 2. 3. 4. 1.1. Overview....................................................................................................................................................... 4 Parameter....................................................................................................................................................4 Hardware Description................................................................................................................................. 6 2.1. Description of hardware interface..............................................................................................................6 2.2. Mechanical Dimension.............................................................................................................................. 9 External Antenna......................................................................................................................................16 2.3. USB OTG Port......................................................................................................................................... 16 2.4. Software Introduction................................................................................................................................16 Feature list................................................................................................................................................ 16 APP support..............................................................................................................................................17 Module Environmental and Package....................................................................................................... 17 Environmental Ratings.............................................................................................................................17 4.1 4.2. Electrostatic Discharge Specifications..........................................................................................................18 3.1. 3.2. Document No.: WMB20200428 Page 3 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 1.Overview Linkplay Wireless Smart Audio moduleA97L, is our 4rd generation smart audio modules developed to be used in the connected speaker, sound bar and other connected audio devices. It integrates the low power WLAN-BT chip and Allwinner R328 application processor. R328 is a highly integrated dual-core SoC targeted for audio application markets. The R328 integrates a dual-core ARM CortexTM-A7 operating up to 1.2GHz. An extensive set of audio interfaces such as audio codec, I2S/PCM, DMIC, one wire audio (OWA) are included for microphone voice wake-up/recognition/pre-processing/playback applications on connected audio products. In addition, mic activity detector (MAD) supports low power consumption wake-up function to reduce standby power consumption. To reduce the BOM cost, DDR DRAM die is embedded for the R328. And the R328 comes with extensive connectivity and interfaces, such as USB, SPI, UART, TWI, etc. Security functions are enabled and accelerated by hardware crypto engine, secure boot and secure efuse, etc. The small footprint with low-power consumption greatly reduces the PCB layout resource. A97L module supports IEEE 802.11 b/g/n 2.4GHz. It also supports BT5.1 with EDR and BLE. A97L module also provides USB, I2S, PWM, TWI, PDM, SPI, UART etc. interfaces. The firmware is fully compatible with Apple Airplay and digital living network alliance (DLNA) streaming standards. It supports Hi-Fi audio up to 192KHz, 24-bit with most popular audio formats. It supports multi-room and multi-channel audio streaming with perfect synchronization. With this module, you can play the music on your speaker wirelessly from iPhone, iPad, iPod touch, Android devices or PC. More important, it enables the traditional speaker system to become the Internet enabled device through the wired or wireless connection provided by the module. Thus, you could freely playback any Internet audio contents such as music, podcast, radio or either the accompany audio in the movie directly from the Internet. Features Allwinner R328 application processor Embedded with DDR DRAM 128MB SPI NAND FLASH 128MB Support IEEE 802.11 b/g/n Support BT5.1 with EDR and BLE Application Connected speaker, sound bar Connected audio devices 1.1. Parameter Type Items Performance Wi-Fi Certification WLAN Standard WFA101964 IEEE 802.11 b/g/n, Wi-Fi compliant Document No.: WMB20200428 Page 4 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Frequency Range 2.400 GHz ~ 2.497 GHz (2.4 GHz ISM Band) Number of Channels Ch1 ~ Ch14 Modulation Output Power 802.11b: DQPSK, DBPSK, CCK 802.11g/n: OFDM /64-QAM,16-QAM, QPSK, BPSK 802.11b /11Mbps: 16 dBm 1.5 dB @ EVM-9dB 802.11g /54Mbps: 15 dBm 1.5 dB @ EVM-25dB 802.11n /MCS7@HT20: 14 dBm 1.5 dB @

EVM-27dB Max EIRP 17.75dBm Receive Sensitivity (11b)

@8% PER Wi-Fi (2.4G) Receive Sensitivity (11g)

@10% PER

- 18Mbps PER @ -85 dBm, 2 dB

- 24Mbps PER @ -83 dBm, 2 dB

- 1Mbps PER @ -96 dBm, 2 dB

- 2Mbps PER @ -90 dBm, 2 dB

- 5.5Mbps PER @ -88 dBm, 2 dB

- 11Mbps PER @ -86 dBm, 2 dB

- 6Mbps PER @ -90 dBm, 2 dB

- 9Mbps PER @ -88 dBm, 2 dB

- 12Mbps PER @ -87 dBm, 2 dB

- 36Mbps PER @ -80 dBm, 2 dB

- 48Mbps PER @ -76 dBm, 2 dB

- 54Mbps PER @ -73 dBm, 2 dB

- MCS=0 PER @ -89 dBm, 2 dB

- MCS=1 PER @ -85 dBm, 2 dB

- MCS=2 PER @ -84 dBm, 2 dB

- MCS=3 PER @ -80 dBm, 2 dB

- MCS=4 PER @ -77 dBm, 2 dB

- MCS=5 PER @ -75 dBm, 2 dB

- MCS=6 PER @ -72 dBm, 2 dB

- MCS=7 PER @ -70 dBm, 2 dB 802.11b: -10 dBm 802.11g/n: -20 dBm D051564 Bluetooth V5.1 of 1, 2 and 3 Mbps External: I-PEX with 3.13 dBi peak gain 2402 MHz ~ 2480 MHz FHSS, GFSK, DPSK, DQPSK 9.97 dBm (Max EIRP) Receive

(11n,20MHz) @10% PER Sensitivity Maximum Input Level Certification Bluetooth Standard Antenna Reference Frequency Band Modulation Output Power

(Class 1.5) Antenna Reference External: I-PEX with 3.13 dB peak gain Bluetooth Number of Channels 79 channels Sensitivity @ BER=0.1%

for GFSK (1Mbps)

-86 dBm, typical Document No.: WMB20200428 Page 5 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Sensitivity @ BER=0.01%

for /4-DQPSK (2Mbps) Sensitivity @ BER=0.01%

for 8DPSK (3Mbps)

-86 dBm, typical

-80 dBm, typical Maximum Input Level

/4-DQPSK (2Mbps) : -20dBm GFSK (1Mbps): -20dBm Hardware Work voltage Work current Standby current Operating ambient temperature Storage temperature Wi-Fi work distance IO Extension Dimension 8DPSK (3Mbps) : -20dBm 4.75 - 5.25VRecommended 5V 150 mA (STA mode) TBD 0 ~ 40

-5 ~ 45 2.4G 80 meters USB, AMIC, LINEOUT, I2S, TWI, PWM, PDM, UART 58PIN,39x30mm Table1- 1 A97L Module Parameters 2. Hardware Description 2.1. Description of hardware interface A97L provides the option to connect with customer board through its 58 pins dual-row male connector. The detail is as follows. Document No.: WMB20200428 Page 6 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Pin description:

Pin No. 1,2,8,10,11,12, 19,20,23,24,25, 26,45,46,57,58 27,28 Figure 2- 1 A97L interface pins Pin Name Type Function Description Remark Digital ground GND Power supply input > 500mA AIO AIO USB Data Signal DM USB Data Signal DP USB_ID/PH8 USB ID/GPIO Master Analog Microphone Bias Voltage Output GPADC2 AI/PU General Purpose ADC Input Channel 2 Power domain: 1.8V GPADC0 AI/PU General Purpose ADC Input Channel 0 Internal pull up to 1.8V

(Pull-up resistor 10K) GND VDD_5V USB_DM USB_DP MBIAS MICIN2P MICIN2N MICIN1P MICIN1N G P I O AI AI AI AI Microphone Positive Input 2 Microphone Negative Input 2 Microphone Positive Input 1 Microphone Negative Input 1 3 4 5 6 7 9 13 14 15 16 Document No.: WMB20200428 Page 7 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 EFUSE power Enable/Disable Reserved for factory test TWI1_SDA IO TWI1 Serial Data Signal Internal pull up to 3.3V

(Pull-up resistor 10K) AI AI AO AO AEC Positive Signal Input AEC Negative Signal Input Differential Mono Negative Output Differential Mono Positive Output UART0 Data Receive GPIO GPIO USB Bus Switch Control/GPIO UART3 Data Transmit/GPIO UART3 Data Receive/GPIO TWI1_SCK IO TWI1 Serial Clock Signal Internal pull up to 3.3V

(Pull-up resistor 10K) 17 18 21 22 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 47 48 49 50 51 52 53 54 55 56 MICIN3P MICIN3N LINEOUTN LINEOUTP UART0_RX EFUSE_EN PH7 PH6 USB_SW/PE2 UART3_TX/PH 4 UART3_RX/PH 5 AUXIN_DET/P H9 PWM0/PB0 OWA_OUT UART0_TX I2S1_MCLK I2S0_MCLK DMIC_CLK PWM6/PB6 PWM7/PB7 I2S0_LRCK I2S1_BCLK I2S0_BCLK I2S1_LRCK I2S0_DIN I2S0_DOUT DMIC_DATA1 I2S1_DIN I I O O O O I I O O O O O O O O IO IO IO IO O I I I AUXIN Cable Insert Detection/GPIO Pulse Width Modulation Output Channel 0/GPIO One Wire Audio Output UART0 Data Transmit I2S1 Master Clock I2S0 Master Clock Digital Microphone Clock Output Pulse Width Modulation Output Channel 6/GPIO Pulse Width Modulation Output Channel 7/GPIO I2S0/PCM0 Left Right Clock I2S1/PCM1 Bit Clock I2S0/PCM0 Bit Clock I2S1/PCM1 Left Right Clock I2S0/PCM0 Serial Data Input I2S0/PCM0 Serial Data Output Digital Microphone Data Input I2S1/PCM1 Serial Data Input Table 2- 1 Linkplay A97L module pin description Notes:

1. IInput Document No.: WMB20200428 Page 8 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 2. OOutput 3. PPower 4. PUInternal Pull Up 5. PDInternal Pull Down 6. AIAnalog Input 7. AOAnalog Output 8. AIOAnalog Input/Output 2.2. Mechanical Dimension Linkplay A97L module has the dimension of 30mm x 39mm. The detailed layout will be given shortly below. Unit: mm 2.2.1 A97L module dimension A97L module uses the patch double row male connector. The male connector and the corresponding female socket are as follows. Double-row patch male connector dimensions:

Double-row patch female connector dimensions:

Figure 2- 2 male connector dimensions Document No.: WMB20200428 Page 9 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Figure 2- 3 Female Connector Dimensions We recommend two ways to connect A97L module:

a) A97L module is directly welded to the board. The dimension drawing of A97L module interface is as follows. Document No.: WMB20200428 Page 10 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 b) Corresponding female head welded on the plate. The recommended layout size of the Figure 2- 4 A97L connector dimensions female head is as follows. Document No.: WMB20200428 Page 11 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 2.2.1 A97L module Height and View TOP View Figure 2- 5 A97L EVB connector dimensions Document No.: WMB20200428 Page 12 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 TOP Components Height Limit Figure 2- 6 TOP View Document No.: WMB20200428 Page 13 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Bottom View Figure 2- 7 TOP Components Height Document No.: WMB20200428 Page 14 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Bottom Components Height Limit Figure 2- 8 Bottom View Figure 2- 9 Bottom Components Height Document No.: WMB20200428 Page 15 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 2.3. External Antenna A97L uses the external antenna for the best Wi-Fi performance. To use external antenna, please choose the antenna type that meets the requirement of IEEE 802 b/g/n Wi-Fi standard running at 2.4GHz frequency. The detailed parameters are shown in the table below. Item Frequency range Impedance VSWR Reflection loss Connector 2.4 ~ 2.5GHz 50 Ohm 2 (Max.)

-10dB (Max.) Parameter I-PEX or populate directly Table 2- 2 External antenna parameters for A97LPower on Sequence 2.4. USB OTG Port Please follow the design rule below to populate the USB host interface:

Item Parameter Signal Group Topology Reference Plane Characteristic Trace Impedance (Zo) Trace Width Serpentine Spacing (center to center) Minimum Isolation Spacing to Clock Signals Minimum Isolation Spacing to Low-Speed Signals Minimum Isolation Spacing to other USB Pair Total Length (with package length) Maximum Recommended Via Count DM to DP Length Matching (with package length) Match total length to within 10 mils USB Differential Pair Point-to-Point Ground Referenced 90 10%

4 mils 8.5 mils 50 mils 20 mils 20 mils

< 8000 mils 2 (per side) Table 2- 3 A97L USB design rule 3. Software Introduction 3.1. Feature list Easy Setup to setup your network, with the help of one button of your device, you can connect the device to your home router quickly. Document No.: WMB20200428 Page 16 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Support Spotify Connect, Airplay, DLNA and QPlay protocol Music stream protocol Amazon Alexa Music content Support iHeartRadio, Napster/Rhapsody, Tidal, Deezer, vTune, Qobuz, Audible, Radio.de, NPRXimalaya Qingting FM, QQ FM, Douban FM inside, with the help of App, you can search, stream, playback and preset the musics of the above music services. Multiroom Music format Support multiroom. Support Airplay, Spotify, Bluetooth, Aux-in multiroom playback. HTTP/HTTPS/RTSP/MMS/TS protocol HLS/ASX/M3U playlist format MP3/AAC/FLAC/ALAC/WMA/APE/OGG codec BT Support 5.1A2DP, AVRCP, HFP, HID profiles Support BLE Support EDR 3.2. APP support iOS App iOS6.1suggest iOS10 and above Android APP Android 4.3.3 Preset With the help of App, you can store the music account token and playlist in the A97L. Then the end user can play the playlist by the button/voice or timer even without the App. Quick Customization With the help of the Linkplay compile server, you can change the brand and some strings, change the logo and some pictures to get a customization App. 4. Module Environmental and Package 4.1Environmental Ratings The environmental ratings are shown as following table. Characteristic Storage Temperature Relative humidity Value

-5 ~ 45 Less than 60 Conditions/Comments Units

Storage Document No.: WMB20200428 Page 17 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2

Less than 80 Table 4-1 A97L Environmental Ratings Operation 4.2. Electrostatic Discharge Specifications Extreme caution must be exercised to prevent electrostatic discharge (ESD) damage. Proper use of wrist and heel grounding straps to discharge static electricity is required when handling these devices. Always store unused material in its antistatic packaging. ESD Specifications Type ESD Handling Machine Model

(MM) CDM Symbol Condition ESD_HAND_HBM Human Body Model Contact ESD Rating 1000 Unit Discharge per JEDEC EID/JESD22-A114 ESD_HAND_MM Machine Model Contact 30 V V V ESD_HAND_CDM Charged Device Model Contact 300 Discharge per JEDEC EIA/JESD22-C101 Table 4-2 ESD Specifications Document No.: WMB20200428 Page 18 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 CE Statement:

RF exposure information: The Maximum Permissible Exposure (MPE) level has been calculated based on a distance of d=20 cm between the device and the human body. To maintain compliance with RF exposure requirement, use product that maintain a 20cm distance between the device and human body. Do not use the device in the environment at too high or too low temperature, never expose the device under strong sunshine or too wet environment. The suitable temperature for the product and accessories is 0-40. This product can be used across EU member states. EU Regulatory Conformance Hereby, Linkplay Technology Inc. Corporation declares that this device is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. Document No.: WMB20200428 Page 19 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 Federal Communication Commission (FCC) Radiation Exposure Statement When using the product, maintain a distance of 20cm from the body to ensure compliance with RF exposure requirements. FCC Statement:

operation. 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 NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications or changes to this equipment. Such modifications or changes could void the users authority to operate the equipment. NOTE: This equipment 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 radiate 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. This device is intended only for OEM integrators under the following conditions:

1. The antenna must be installed such that 20 cm is maintained between the antenna and users. 2. The transmitter module may not be co-located with any other transmitter or antenna. As long as the two conditions above are met, additional transmitter testing will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required for the installed module. Important Note:

another transmitter), then the Federal Communications Commission of the U.S. Government (FCC) and the Canadian Government authorizations are no longer considered valid and the FCC ID and IC ID cannot be used on the final product. In these circumstances, the OEM integrator shall be responsible for re-evaluating the end-product

(including the transmitter) and obtaining a separate FCC and IC authorization in the U.S. and Canada. OEM Integrators - End Product Labeling Considerations:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with Document No.: WMB20200428 Page 20 of 21 Doc Title Wireless Smart Audio ModuleA97L Datasheet Number Version WMB20190325 1.2 This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the following: Contains, FCC ID:

2ANOG-A97L. The grantee's FCC ID can be used only when all FCC compliance requirements are met. OEM Integrators - End Product Manual Provided to the End User:

The OEM integrator shall not provide information to the end user regarding how to install or remove this RF module in end product user manual. The end user manual must include all required regulatory information and warnings as outlined in this document. Document No.: WMB20200428 Page 21 of 21 EU Declaration of Conformity Number Wireless Smart Audio Module_A97L_DOC Name and address of the Manufacturer Linkplay Technology Inc. 8F-8036, Qianren Building, No.7, Yingcui Road, Jiangning District, Nanjing, China This declaration of conformity is issued under the sole responsibility of the manufacturer. Object of the declaration A97L is Wireless Smart Audio Module which incorporate WIFI,BT technologies. The object of the declaration described above is in conformity with the relevant Union harmonisation legislation Directive RED: 2014/53/EU and other Union harmonization legislation where applicable:

RoHS directive: 2015/863/EU amending 2011/65/ EU WEEE directive: 2012/19/EU References to the relevant harmonised standards used or references to the other technical specifications in relation to which conformity is declared. EN IEC 62368-1:2020+A11:2020;

ETSI EN 301 489-1 V2.2.3;

ETSI EN 301 489-17 V3.2.4;

The Notified Body Name: Phoenix Testlab Number: 0700 And issued the EU-type examination certificate Certificate number:

ETSI EN 300 328 V2.2.2;

EN 62311:2020;

Performed Applicable Modules: B+C This product can be used across EU member state. Description of accessories and components, including software, which allow the radio equipment to operate as intended and covered by the DoC Hardware version Software version Antenna V05 Linkplay.4.3.235732 External rod antenna

.. Software version note:Some software updates will be released by the manufacturer to fix some bug or enhance some function after placing on the market. All versions released by the manufacturer have been verified and still compliance with the related rules. All RF parameters (e.g.: frequency range, output power) are not accessible to the user, and cant be changed by the user. Signed for and on behalf of:

Nanjing 13/09/2021 Place and date of issue cunxue wang, HW Manager Name, Function, signature

Linkplay Technology Inc. Date:2021-07-30 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Request of Confidentiality for FCC ID: 2ANOG-A97L To Whom it may concern:

Pursuant to sections 0.457 and 0.459 of Commissions Rules(CFR 47), and Section 552(b)(4) of the Freedom of Information Act, Linkplay Technology Inc. hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public to the Applicant and provide disclosure of unjustified benefits to its competitors. these matters might be harmful We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA04-1705. This provision will give Linkplay Technology Inc. temporary confidentiality of commercially sensitive information prior to product release. The requested Permanent and Short-Term Confidential exhibits are listed as follows:

PERMANENT AND SHORT-TERM CONFIDENTIAL LIST PERMANENT SHORT-TERM Exhibit 1 2 3 4 5 6 7 8 Description Block Diagram Operational Description Schematics BOM External Photos Internal Photos Test-Setup Photos User Manual to Rule 0.457, disclosure of The Applicant understands that pursuant this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Signatory:

Name: cunxue wang Company name:Linkplay Technology Inc. Address:8F-8036, Qianren Building, No.7, Yingcui Road, Jiangning District, Nanjing, China Tel: (86) 13382175700 Email: cunxue.wang@linkplay.com

Linkplay Technology Inc. Modular Approval Request Letter Date:

FCC ID:

2021-09-12 2ANOG-A97L Type of Equipment: Wireless Smart Audio Module The following requirements according to FCC Part 15.212 are met:

i RF shielding The radio portion has its own shielding (see external photos) ii Buffered modulation/data inputs It has been integrated in the chipset R328. iii Power supply regulation It is integrated in circuits of U1/U2. iv Antenna requirements section 15.203, 15.204 b and 15.204 c The module only provides one U.FL Gen1 connector. Spurious emission requirements are met

(Refer to the attached test report) v Stand alone test configuration Please refer to test setup configuration photos and as the schematics showThe RF path from A97L series module to EVB via CYW43438KUBG, FL1,CN2 (IPEX Connector), 20cm RF cable, CN46 (IPEX Connector) and CN47 (SMA Connector) in turn. This setup does not affect RF test results. The CYW43438KUBG, FL1, and CN2 devices are designed on A97L module, CN46 and CN47 devices are designed on EVB. Both CN46 and CN47 are standard RF connector (As shown below). EVB is only used to assist A97L authentication (It provides 5V DC power supply for A97L module). Its interfaces include Micro USB, USB Type-A, 3.5mm phone jack, key array, MIC array and LED array etc, so the EVB does not affect the RF test results. version01 Linkplay Technology Inc. vi Labelling The module has its own label. The instruction of labelling rules for the host device has been stated in the user manual. vii Compliance on specific rule or operating requirements The required FCC rules has been fulfilled and all instructions of maintaining compliance are clearly stated in the user manual. viii RF Exposure RF exposure requirements are fulfilled for mobile configuration. The installation of the module is restricted to mobile host devices what is clearly stated in the installation instruction of the user manual. For portable applications, OEM integrators need SAR evaluation and an own FCC ID. Name: Cunxue Wang Title: HW Manager Company: Linkplay Technology Inc. version01

Linkplay Technology Inc. Date: 2021-07-30 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern:

The Linkplay Technology Inc., the undersigned, hereby authorizes Miss. Wendy Zhan from Shenzhen Morlab Communications Technology Co., Ltd., to act on the behalf of the Linkplay Technology Inc. solely in matters relating to the application for an FCC equipment authorization for FCC ID: 2ANOG-A97L including the signing of documents in connection with this Application. Necessary acts carried out Shenzhen Morlab Communications Technology Co., Ltd. on our behalf of the Linkplay Technology Inc. in connection with the Application shall have the same effect as acts of the Linkplay Technology Inc.. Linkplay Technology Inc. also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Thank you for your attention to this matter. Yours Sincerely, Signatory:

Contact name: Cunxue Wang Title: HW Manager Tel: (86) 13382175700 Email: cunxue.wang@linkplay.com Company name: Linkplay Technology Inc.

Declaration To whom it may concern:

We have declared below featured for FCC equipment authorization, Device FCC ID: 2ANOG-A97L Don't operate on Channels 12 and 13. US 2.4G channel 12-13 and Country code selection are disabled through proprietary software and are not user changeable Should you have any questions, please feel free to contact me. Signature :

Date:2021/08/05 Contact name:cunxue wang Title: HW Manager Company name: Linkplay Technology Inc.