BK3254 Bluetooth V4.1 модуль FM Радио стерео аудио модуль TF карты/U диска/инфракрасный Дистанционное управление

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The Bluetooth module is an intelligent wireless audio data transmission product developed independently by our company. It is a low-cost and cost-effective stereo wireless transmission solution. The module adopts the BK3254 chip QFN48 package design. F-6888 bluetooth module adopts the drive-free mode, customers only need to connect the module to the application product, can realize the wireless transmission of music quickly, enjoy the fun of wireless music, and support the simple data transmission function. Support for intelligent voice prompts and numbers function; integrated TF card playback; integrated mobile U disk playback; support for internal LINE-IN; support for internal FM radio.

The module is mainly used for short distance music transmission, can be easily and notebook computers, mobile phones, PDA and other digital products, Bluetooth devices connected to achieve the wireless music transmission.

Bluetooth Profiles

Bluetooth V4.1 specification support

A2DPv1.2

AVRCPv1.5

HFPv1.5

HSP1.2

Bluetooth audio

hands-free phone

Bluetooth stereo headset

Bluetooth wireless transmission of audio

Model: BK3254

Bluetooth Specifications: Bluetooth V4.1

Power supply voltage: DC2.8-4.2V, ≤ 2.9V automatic shutdown, ≤ 3.1V alarm

Support Bluetooth protocol: HFPV1.5, A2DPV1.2, AVRCPV1.4, HSP1.2, GAVDP1.2

Working current: ≤45mA

Standby current: <500uA

Temperature range: -40oC to + 85oC

Wireless transmission range: ≤ 10 meters

Transmission power: Class2 4dbm

Sensitivity: -80dBm <0.1% BER

Frequency range: 2.402GHz ~ 2.480GHz

External interface: serial (TTL level), and PC connection requires level conversion, such as CH340G, USB to TTL

Audio performance: SBC decoding

Audio signal to noise ratio: ≥ 75dB

Module size: 25x13.5x1.8mm

Transfer board size: 24x29mm

IO number IO name

1 GND

2 FMINN

3 FMINP

4 PREV/VOL-(TMS)

5 NEXT/VOL+(TCK)

6 P.P/CALL(TDO)

7 CHG_MODE(TDI)

8 RSTN

9 VOL-(GPIO6)

10 TX(GPIO0)

11 RX(GPIO1)

12 MUTE(GPIO9)

13 LED0(GPIO15)

14 LED1(GPIO17)

15 VOL+(GPIO16)

16 GND

17 FM_DISABLE(GPIO10)

18 SPI_MOSI(GPIO13)

19 GPIO5

20 SPI_MISO(GPIO14)

21 SPI_CLK(GPIO12)

22 USB_P（GPIO2）

23 USB_N（GPIO3）

24 IR（GPIO22）

25 GND

26 AUX_DET(GPIO11)

27 AUX_R

28 NC

30 MICIP

31 VMIC

32 AUDIOLN

33 AUDIOLP

34 AUDIORP

35 AUDIORN

36 VDD3IO

37 VBAT

38 3VOUT

39 ADC

40 GND

1*FM Radio Stereo Audio Module