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FCC Radiation Exposure Statement: 

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled 

environment. End users must follow the specific operating instructions for satisfying RF exposure 

compliance. 

Note 1:

 This module certified that complies with RF exposure requirement under mobile or fixed 

condition, this module is to be installed only in mobile or fixed applications. 

A mobile device is defined as a transmitting device designed to be used in other than fixed 

locations and to generally be used in such a way that a separation distance of at least 20 

centimeters is normally maintained between the transmitter's radiating structure(s) and the body of 

the user or nearby persons. Transmitting devices designed to be used by consumers or workers that 

can be easily re-located, such as wireless devices associated with a personal computer, are 

considered to be mobile devices if they meet the 20 centimeter separation requirement. 

A fixed device is defined as a device is physically secured at one location and is not able to be 

easily moved to another location. 

Note 2: 

Any modifications made to the module will void the Grant of Certification, this module is 

limited to OEM installation only and must not be sold to end-users, end-user has no manual 

instructions to remove or install the device, only software or operating procedure shall be placed 

in the end-user operating manual of final products. 

Note 3:

 Additional testing and certification may be necessary when multiple modules are used. 

Note 4: 

The module may be operated only with the antenna with which it is authorized. Any 

antenna that is of the same type and of equal or less directional gain as an antenna that is 

authorized with the intentional radiator may be marketed with, and used with, that intentional 

radiator. 

Note 5:

 To ensure compliance with all non-transmitter functions the host manufacturer is 

responsible for ensuring compliance with the module(s) installed and fully operational. For 

example, if a host was previously authorized as an unintentional radiator under the Declaration of 

Conformity procedure without a transmitter certified module and a module is added, the host 

manufacturer is responsible for ensuring that the after the module is installed and operational the 

host continues to be compliant with the Part 15B unintentional radiator requirements. Since this 

may depend on the details of how the module is integrated with the host, Linkplay Technology 

Inc.. shall provide guidance to the host manufacturer for compliance with the Part 15B 

requirements. 

Note 6:

 FCC ID label on the final system must be labeled with “Contains FCC ID: 2ANOG-A76D” 

or “Contains transmitter module FCC ID: 2ANOG-A76D”. 

Summary of Contents for A76

Page 1: ...ly separate approval is required for all other operating configurations including portable configurations and different antenna configurations When the module is used in host it must consider FCC IC required refer to FCC Radiation ExposureStatement and FCC IC Warning OEM Integrators Installation Manual ...

Page 2: ...fication Number WMB20170117 Version 1 2 Document No WMB20170117 Page 2 of 21 HISTORY Version Date Description 1 0 01 17 2017 Specification release 1 1 06 15 2017 Add electrical specifications 1 2 07 20 2017 Update VDDRTC current parameters ...

Page 3: ...f hardware interface 5 2 2 Mechanical Dimension 8 2 3 External Antenna 11 2 4 Typical Application 12 2 5 Power on Sequence 15 2 6 USB Host Port 17 3 Electrical Specifications 18 3 1 Absolute Maximum Ratings 18 3 2 Recommended operating conditions 18 3 3 Power consumption 19 3 Software Introduction 19 3 1 Feature list 19 3 2 App support 20 3 3 Certifications 20 4 Module picture and package 20 ...

Page 4: ...t 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 wirele...

Page 5: ...ion FHSS GFSK DPSK DQPSK Transmit Class1 5 8 dBm Receive sensitivity BER 0 1 for GFSK 1Mbps 86dBm BER 0 01 for π 4 DQPSK 2Mbps 86dBm BER 0 01 for 8DPSK 3Mbps 80dBm Maximum receiver power GFSK 1Mbps 20dBm π 4 DQPSK 2Mbps 20dBm 8DPSK 3Mbps 20dBm Antenna External I PEX antenna gain 0 2 dBi shared with BT Hardware Work voltage 5V Work current TBD Standby current TBD Work temperature 5 40 Storage tempe...

Page 6: ... ground 3 4 5VIN Power I Power supply input 500mA 6 VDDRTC Power I RTC power supply input 40uA 8 3 3V Power O Output for I O power 100mA 7 GPC23 I SDIO0 card detect external pull up required 9 GPB22 I O General purpose input output external pull up required 10 MSC0_CMD O SDIO0 command external pull up required 11 MSC0_CLK O SDIO0 clock 12 MSC0_D0 I O SDIO0 data 0 external pull up required 13 MSC0_...

Page 7: ... input output external pull up required 23 GPB8 I O General purpose input output external pull up required 24 GPB7 I O General purpose input output external pull up required 25 PWM3 I O Pulse width modulation GPB6 General purpose input output external pull up required 26 PPRST_N I CPU reset internal pull up RC delay 27 WKUP_N I Wake up internal pull up 28 OTG_ID I OTG ID signal internal pull up 31...

Page 8: ...ernal pull up required 49 GPD2 I O General purpose input output external pull up required UART1_RXD 50 GPB21 I O General purpose input output external pull up required 51 GPD0 I O General purpose input output external pull up required I2C2_SCL 52 PWRON O Power on output 53 GPB25 I O General purpose input output external pull up required Internal development only 55 USB_DP I O USB data plus 56 USB_...

Page 9: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 9 of 21 TOP Components High Limit ...

Page 10: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 10 of 21 BOTTOM Components High Limit ...

Page 11: ...nna 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 Parameter Frequency range 2 4 2 5GHz Impedance 50 Ohm VSWR 2 Max Reflection loss 10dB Max Connector I PEX or populate directly Table 2 5 External antenna parameters...

Page 12: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 12 of 21 2 4 Typical Application WiFiAudio A76 s typical reference design CODEC Far Field ...

Page 13: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 13 of 21 Micro SD Card Power ...

Page 14: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 14 of 21 Button and LED ...

Page 15: ...commended power on sequence There are three I O pins in RTC power domain 1 PPRST_N Power on reset and hardware reset signal input 2 WKUP_N Power on signal input 3 PWRON Power on signal output to turn on DCDC LDO Power switches Note There is an R C delay circuit on A76 for power on reset sequence so you may consider PPRSET_N only as HW reset The following are two power on sequences for typical appl...

Page 16: ...then RTC power domain turns active Step 2 Input a pulse low level active more than 160ms to WKUP_N pin Step 3 Once A76 gets this pulse it will continuously output a high level signal from PWNON pin to turn on every DCDC LDO Step 4 DCDC on 5V power supply to A76 5VIN pin Step 5 A76 generate every power voltage needed inside the module Step 6 A76 generate power on reset inside the module system boot...

Page 17: ... pin is no longer exist A76 will generate a voltage supply to VDDRTC power domain itself on purpose of reducing power consumption of RTC battery Note 2 During the process of system power on every signal connected to A76 I2S I2C GPIO UART etc should configured as GPIO and set to High Z or input mode Please strictly avoid high level signals on these traces otherwise it may cause wrong power sequence...

Page 18: ... processors are listed in Table 3 1 Do not exceed these parameters or the part may be damaged permanently Operation at absolute maximum ratings is not guaranteed Table 3 1 Absolute Maximum Ratings Parameter Min Max Unit Storage Temperature 40 135 Operation Temperature 5 40 5VIN power supplies voltage 0 5 5 3 V Input voltage to VDDRTC supplied non supply pins 0 5 3 6 V Maximum ESD stress voltage Hu...

Page 19: ...e 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 Music stream protocol Support Spotify Connect Airplay DLNA and QPlay protocol Amazon Alexa Music content Support iHeartRadio Napster Rhapsody Tidal Deezer vTune Qobuz Audible Radio de NPR Ximalaya Qingting FM QQ FM Douban FM inside with ...

Page 20: ...support iOS App iOS6 1 suggest iOS10 and above Android App Android 4 3 3 Quick custimzation 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 3 3 Certifications Linkplay can help you to finish follow certifications Wi Fi Logo BQB Amazon Alexa MFI Spotify Connect DLNA QPlay 4 Module picture and package...

Page 21: ...Doc Title Linkplay WiFiAudio A76 Specification Number WMB20170117 Version 1 2 Document No WMB20170117 Page 21 of 21 Notes One tray 30pcs One box 15 trays On box in total 15 30pcs 450pcs ...

Page 22: ...d users end user has no manual instructions to remove or install the device only software or operating procedure shall be placed in the end user operating manual of final products Note 3 Additional testing and certification may be necessary when multiple modules are used Note 4 The module may be operated only with the antenna with which it is authorized Any antenna that is of the same type and of ...

Page 23: ... device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation NOTE Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment ...

Page 24: ...permissive change Cet appareil et son antenne s ne doit pas ê tre co localisé s ou fonctionnement en association avec une autre antenne ou transmetteur This equipment complies with IC RSS 102 radiation exposure limits set forth for an uncontrolled environment This equipment should be installed and operated with minimum distance 20cm between the radiator your body Cet é quipement est conforme aux l...

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