BK3254

BK3254 BEKEN | Alldatasheet

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BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 1 of 17 BK3254 Bluetooth Multimedia SoC Datasheet Preliminary Specification Approvals Name Date Signature Beken Corporation 41，1387 Zhangdong Rd, Shanghai 201203, China PHONE: (86)21 5108 6811 FAX: (86)21 6087 1089 This document contains information that may be proprietary to, and/or secrets of, Beken Corporation. The contents of this document should not be disclosed outside the companies without specific written permission. Disclaimer: Descriptions of specific implementations are for illustrative purpose only, actual hardware implementation may differ.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 2 of 17

Revision History

Rev. Date Author(s) Remark 0.1 2015/8/25 Weifeng Initial Draft based on BK3254 datasheet today 2015/9/11 Weifeng Swap USBP and USBN location 0.2 2015/12/8 Weifeng Modify package information 0.3 2016/2/15 Weifeng Update package to QFN48 0.4 2016/06/01 Donghui Update Features and add new Package QFN32 0.5 2016/07/01 Donghui Update SSOP24 Audio Version

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 4 of 17 1. General Description The BK3254 chip is a highly integrated single-chip Bluetooth multimedia device. It integrates Bluetooth transceiver, FM receiver, SD-card interface, USB OTG, and high performance audio peripheral. The BK3254 cache based architecture enables it is fully programmable with any application, that it may be used for control and multimedia hybrid application. 1.1. Features  Operation voltage from 2.8 V to 5.2 V  Bluetooth 4.1 + EDR compliant  -90 dBm sensitivity for 1 Mbps mode and 5 dBm transmit power  -107 dBm sensitivity FM receiver  1-wire or 4-wires SD-card interface  USB 2.0 host and device  Integrated 90 dB SNR ADC and stereo DAC  I2C,SPI and UART interface  Bluetooth A2DP, AVRCP and HFP profile  SSOP24, SSOP28, QFN48 , QFN32 package 1.2. Applications  Multi-mode Bluetooth stereo speaker  Bluetooth control and multimedia hybrid

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 5 of 17 2. Pin Information BK3254 QFN 6*6 48-Pin AUDIOLP AUDIORP RFP_BT LINL LINR MICINP VREF1AUD VSYS3V2 VCC4BAT VCCAUD GPIO17 GPIO16 GPIO4 RSTN GPIO0 GPIO18 GPIO19 VDD12 GPIO20 GPIO21 GPIO11 GPIO10 MICREF GNDAUD

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 6 of 17 BK3254 SSOP24 Table below has a pin description of the QFN 6x6 48-pin package, and for other package the pin with the same name as QFN has the same function. Table 1 Pin Description Package Pin # Name Description

1 GPIO0 GPIO 0

2 RSTN Reset pin, active low

3 RFP_BT Bluetooth RF Input and Output

4 VCCAUD Audio power supply; Local 1uF decoupling cap

5 AUDIORP Audio output right channel

6 AUDIOLP Audio output left channel

7 GNDAUD GND

8 LINR Line input right channel

9 LINL Line input left channel

10 MICINP Microphone input positive

11 MICREF Microphone input signal reference voltage

12 VREF1AUD Audio reference; Connected to 4.7uF decoupling cap for high audio quality

13 FMINP FM input positive

14 FMINN FM input negative

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 7 of 17

15 USBP(GPIO2) USB positive or GPIO 2

16 USBN(GPIO3) USB negative or GPIO 3

17 GPIO22 GPIO 22

18 GPIO9 GPIO 9

19 GPIO8(HD_FLA) FLASH hold signal

20 GPIO7(WP_FLA) FLASH write protection

21 NC NC

22 NC NC

23 NC GND

24 VDD3IO_FLA LDO output for FLASH, 3 V by default, local 1uF decoupling

25 VCC4BAT Battery power input, 2.8 V ~ 5.5 V 26 VSYS3V2 LDO output 3.2 V 27 VDD12 LDO output 1.2 V; Connected to 1uF Decoupling cap

28 GPIO4(VADC) GPIO4 or ADC input

29 GPIO11 GPIO 11

30 GPIO10 GPIO 10

31 GPIO19(JTMS) GPIO 19

32 GPIO18(JTCK) GPIO 18

33 GPIO21(JTDO) GPIO 21

34 GPIO20(JTDI) GPIO 20

35 GPIO17 GPIO 17

36 GPIO16 GPIO 16

37 GPIO15 GPIO 15

38 GPIO14 GPIO 14

39 GPIO13 GPIO 13

40 GPIO12 GPIO 12

41 GPIO6 GPIO 6

42 VCC2V4 2.4 V LDO output

43 VCC3XTAL XTAL power supply, local 1uF decoupling cap

44 XO XTAL output

45 XI XTAL input

46 VCCBT Bluetooth power supply, local 1uF decoupling cap

47 GPIO5 GPIO 5

48 GPIO1 GPIO 1

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 8 of 17 BK3254 QFN 5*5 32-Pin XO AUDIOLP AUDIORP XI RFP_BT LINL LINR VCCSD MICINP VREF1AUD VSYS3V2 VBAT VCC3XTAL VCCAUD VDD3IO_FLA FMIPN GPIO19 GPIO22 USBP GPIO13 GPIO0 GPIO1 GPIO14 GPIO20 VDD12 GPIO18 GPIO213 GNDAUD NC/AUDVCM FMGND USBN GPIO12 Table below has a pin description of the QFN 5x5 32-pin package Package Pin # Name Description

1 RFP_BT Bluetooth RF Input and Output

2 VCCAUD Audio power supply; Local 1uF decoupling cap

3 NC/AUDVCM NC. As AUDVCM only in BK3254E

4 AUDIORP Audio output right channel

5 AUDIOLP Audio output left channel

6 GNDAUD GND of AUD

7 LINR Line input right channel

8 LINL Line input left channel

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 9 of 17 9 VREF1AUD Audio reference; Connected to 4.7uF decoupling cap for high audio quality

10 FMINP FM input positive

11 FMGND GND of FM

12 MICINP Microphone input positive

13 USBP(GPIO2) USB positive or GPIO 2

14 USBN(GPIO3) USB negative or GPIO 3

15 GPIO22 GPIO 22

16 VDD3IO_FLA LDO output for FLASH, 3 V by default, local 1uF decoupling

17 VCC4BAT Battery power input, 2.8 V ~ 5.5 V 18 VSYS3V2 LDO output 3.2 V 19 VDD12 LDO output 1.2 V; Connected to 1uF Decoupling cap

20 GPIO19(JTMS) GPIO 19

21 GPIO18(JTCK) GPIO 18

22 GPIO21(JTDO) GPIO 21

23 GPIO20(JTDI) GPIO 20

24 GPIO14 GPIO 14

25 GPIO13 GPIO 13

26 GPIO12 GPIO 12

27 VCC3XTAL XTAL power supply, local 1uF decoupling cap

28 XO XTAL output

29 XI XTAL input

30 VCCSD LDO Output 2.9V; Local 1uF Decoupling cap

31 GPIO1 GPIO 1

32 GPIO0 GPIO 0

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 10 of 17 3. Functional Description 3.1. GPIO The BK3254 has total 22 GPIOs, which can be configured as either input or output. Most of them have second function. Table 1 GPIO Function Mapping Name Peripheral mode GPIO Mode GPIO0 UART_TXD/I2C_SCL General I/O GPIO1 UART_RXD/I2C_SDA General I/O GPIO2 TX_EN/USBP General I/O GPIO3 RX_EN/USBN General I/O GPIO4 ADC channel 1 input General I/O GPIO5 ADC channel 2 input General I/O GPIO6 SPI chip enable General I/O GPIO7 SPI clock or FLASH_WP General I/O GPIO8 SPI MOSI or FLASH_HD General I/O GPIO9 SPI MISO General I/O GPIO10 PWM0 General I/O GPIO11 PWM1 General I/O GPIO12 SD card clock General I/O GPIO13 SD card command General I/O GPIO14 SD card data (1-wire) or data bit 0 (4-wires) General I/O GPIO15 SD card data bit 1 General I/O GPIO16 SD card data bit 2 General I/O GPIO17 SD card data bit 3 General I/O GPIO18 JTAG TCK General I/O GPIO19 JTAG TMS or ADC channel 3 input General I/O GPIO20 JTAG TDI General I/O GPIO21 JTAG TDO General I/O GPIO22 IrDA signal input General I/O All GPIO can be source to wake up MCU from shut down state. In shut down state, any level change on the set GPIO will trigger the wake up procedure. After power on, the GPIO0~GPIO6, GPIO9~GPIO17, and GPIO22 are non-in/out with pull-low; GPIO7,GPIO8 is in second function mode; the GPIO18 to GPIO21 is JTAG mode.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 11 of 17 3.2. PWM Timer and Watch Dog Timer There are two sets of PWM timers. One fast set uses 1 MHz clock as main clock, and another slow set uses 32 kHz clock as main clock. Each set has three 16 bits counter with 4 bit pre-divider. First two timers in slow set can be used to LED duty cycle control. The watch dog timer runs with 32 kHz clock, with period from 0.6 ms to 38 second. 3.3. Power Management The BK3254 can work with power supply from 2.8 V to 5.5 V, that it can work directly with USB power supply. The BK3254 can enter into shut down mode when there is no active connection. The shut mode can be waked up by any GPIO. 3.4. MCU The 16 bit RISC MCU has Cache and DMA bus, to support efficient execution and frequently data exchange. The JTAG interface can be used to on-line debug, which can be also configured as GPIO. Besides 26 MHz crystal, the MCU can run with internal DPLL clock, or 32 kHz ring oscillator clock, with programmable divided ratio. 3.5. I2C and UART Interface There is one set of I2C interface and one set of UART interface for debug or external MCU control the BK3254. 3.6. FLASH Access Interface The BK3254 MCU is running with the external FLASH program memory and the internal instruction cache. The external FLASH can be also used to store user data such as key configuration and Bluetooth paring information. 3.7. SPI The 4-wires SPI supports high speed data communication, which can be used as interface to either external FLASH or LCD controller.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 12 of 17 3.8. SAR ADC and LED The SAR ADC has 10-bit resolution, and the two LED drivers support up to 10 mA current. 3.9. Audio Peripheral There are one set of speech ADC with sample rate 8 kHz or 16 kHz. The DAC have two channels for stereo application, with sample rate 8 kHz, 16 kHz, 44.1 kHz or 48 kHz. There is also a stereo line in interface, to allow external stereo input passing internal 31 dB programmable gains amplify to stereo output. 3.10. USB It supports USB 2.0 full speed, both host mode and device mode. 3.11. Bluetooth and FM It supports Bluetooth 2.1+EDR A2DP/AVRCP and HPF function. The FM receiver supports 76~108 MHz stereo FM broadcasting. 4. Electrical Characteristics 4.1. Absolute Maximum Ratings Parameter Description MIN TYP MAX Unit VCCBAT Battery regulator Supply voltage -0.3 3.3 5.5 V PRX RX input power - 10 - dBm TSTR Storage temperature range -40 - 150 ℃ VCCIO IO interface voltage -0.3 2.8 4.2 V 4.2. Recommended Operating Conditions Parameter Description MIN TYP MAX Unit VCCBAT Battery regulator Supply voltage 2.8 4.2 5.5 V TOPR Operation temperature range -20 - 80 ℃ VCCIO IO interface voltage 1.8 - 3.6 V

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 13 of 17 4.3. Typical Power Consumption State Description MIN TYP MAX Unit Shut down Software shut down, wake up from GPIO 30 uA Bluetooth Idle-Sniff Idle state at Sniff mode 3 mA Active (A2DP) 3DH1 45 mA Active (HFP) HV1 50 mA 4.4. Bluetooth Characteristics Parameter Condition MIN TYP MAX Unit Operate Frequency 2402~2480 2402 2480 MHz RXSENS-1 Mbps BER=0.001 -90 dBm RXSENS-2 Mbps BER=0.0001 -92 dBm RXSENS-3 Mbps BER=0.0001 -84 dBm Maximum received signal BER=0.001 0 dBm Maximum RF transmit power 5 dBm RF Power Control Range 30 dB 4.5. Audio Characteristics Parameter Condition MIN TYP MAX Unit DAC Output Amplitude Single-end Output 1 Vrms DAC Dynamic Range 1 kHz sine wave 90 dB DAC Noise Floor @600ohm loading -89 dBm DAC SNDR Single-end@1.0Vrms 75 dB DAC Sample Rate 8 48 kHz ADC SNR 1 kHz sine wave 96 dB ADC Sample Rate 8 16 kHz 5. Application Schematic It will be provided with separate document. 6. About the Qualification By carefully PCB layout, the BK3254 RF performance meets FCC, CE and BQB requirement. The Bluetooth protocol and profile provided by Beken are already qualified and listed in SIG website. If there is any end product listing requirement with the BK3254, please inquire Beken for the related QDID authorization.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 14 of 17 7. Package Information 7.1. QFN48 The BK3254 package type can be QFN 6x6 48-Pin.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 15 of 17 7.2. SSOP24

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 16 of 17 7.3. SSOP28 The BK3254 package type can be SSOP 28-Pin.

BK3254 Datasheet v 0.5 © 2011 Beken Corporation Proprietary and Confidential Page 17 of 17 8. Ordering Information Part number Package Packing MOQ (ea) BK3254QN48 QFN 6x6 48-Pin Tape Reel 10 k BK3254SS24 SSOP 24-Pin Tape Reel 10 k BK3254SS28 SSOP 28-Pin Tape Reel 10 k Remark: MOQ: Minimum Order Quantity