Microchip Technology BM23SPKXYC2A User Manual

5F, No.5, Industry E. Rd. VII, Hsinchu Science Park, Hsinchu city 30077, Taiwan, R.O.C Version:0.94
Phone: [phone] 10/27/2014

Fax: [phone]

BM23SPKA1NB9

BM23SPKA1NB9

Bluetooth 4.1 Digital Audio Interface Module

BM23SPKA1NB9

Product Description

The ISSC BM23SPKA1NB9 is a highly integrated Bluetooth 4.1 digital audio
output module, designed for high data rate, short-range wireless
communication in the 2.4 GHz ISM band. With the build-in ISSC Bluetooth
stack, profile and digital audio interface, the ISSC BM23SPKA1NB9 can
combine the external DSP and codec to provide high performance Bluetooth
audio.

Features

 Main Chip: ISSC IS2023S(ROM version)
 Bluetooth 4.1 EDR compliant
 Max. +4dBm Class 2 output power
 Receiver Sensitivity: GFSK typical -90dBm, π/4 PSK typical -91dBm,

8DPSK typical -84dBm

 Piconet and Scatter net support
 CVSD, A-law, -law, mSBC CODEC algorithms for voice applications
 SBC/AAC decode for Bluetooth audio streaming
 Microphone input and audio line-in support
 Built-in four language voice prompt (Chinese/English/Spanish/French)
 Support PCM and I2S digital audio interface
 Built-in 350mAH Li-ion battery charger
 HSP, HFP, A2DP, AVRCP,SPP profiles supported
 3.3V operating voltage
 Built-in program ROM and 64Kb EEPROM
 43 pins for SMT module Size: 15mmx29mm2
 Built-in PCB Antenna
 RoHS compliant
 FCC certification

Version: 0.94 - 2 - 22/9/2014

BM23SPKA1NB9

Module Pin Out Diagram

BM23SPKA1NB9

Version: 0.94 - 3 - 22/9/2014

BM23SPKA1NB9

Version: 0.94 - 4 - 22/9/2014

Pin No.

I/O

Name

Description

1

I/O

P00

GPIO, default pull-low input.
UART_TX_IND: BT Module use to inform MCU

2

I/O

RFS0

Receive frame synchronization

3

I/O

TFS0

Transmit frame synchronization

4

I/O

SLK0

Serial clock

5 I DR0

Serial data receive

6 O DT0

Serial data transmit

7

I/O

P04

GPIO, default pull-high input

8 I EAN

Embedded ROM/External Flash enable
High: ROM mode;
Low: External Flash mode

9

AI

MIC1_P

Mic 1 mono differential analog positive input

10

AI

MIC1_N

Mic 1 mono differential analog negative input

11

AP

MIC_BIAS

Power output, microphone biasing voltage

12

AP

VDDA

Power output, reserve for external cap to fine tune
audio frequency response, no need to add power
to this pin

13

AI

AIR

Stereo analog line in, R-channel

14

AI

AIL

Stereo analog line in, L-channel

15 P GND

Ground

16

I/O

RST_N

System Reset Pin,
Low: reset

17

--

NC

--

18

--

NC

--

19 P VDDIO

Power output, VDDIO pin, no need to add power to
this pin

20

I/O

P15

GPIO, default pull-high input

21

I/O

P01

GPIO, default pull-high input

22

P

ADAP_IN

Power adaptor input

23 P BAT_IN

Battery input

24

P

AMB_DET

ADC analog input 1

Pin Definition for ROM module

BM23SPKA1NB9

Version: 0.94 - 5 - 22/9/2014

25

P

SYS_PWR

System Power Output
BAT mode: 3.3~4.2V
Adapter mode: 4.0V

26

P

BK_OUT

Power output, 1v8 pin, no need to add power to this
pin

27 P MFB

1. Power key when in off mode

2. UART_RX_IND: MCU use to wakeup BT

28 P LED1

LED Driver 1, 4mA max

29 P LED2

LED Driver 2, 4mA max

30

I/O

P24

GPIO, default input with internal pull high
System Configuration: (with the combination of P20
and EAN)
Low: boot Mode when P20=low, EAN=high

31

I/O

P02

GPIO, default pull-high input

32

I/O

P03

GPIO, default pull-high input

33

O

HCI_TXD

HCI TX data, output pin, BT to send data

34

I

HXI_RXD

HCI RX data, input pin, BT to receive data

35

I/O

P05

GPIO, default pull-high input

36

I/O

P27

GPIO, default pull-high input

37

I/O

P20

GPIO, default pull-high input

38

I/O

P30

GPIO, default pull-high input

39

I/O

P20

GPIO, default pull-high input
System Configuration, H: Application L:

Baseband(IBDK Mode)

40 P GND

Ground.

41 A ANT1

Antenna enhancement .

42 A ANT2

Antenna enhancement .

43 A ANT3

Antenna enhancement .

BM23SPKA1NB9

Version: 0.94 - 6 - 22/9/2014

Digital Audio Interface

 Support I2S and PCM interface
 Sampling Rate : 8K, 44.1K, 48K
 Word Length: 16 bits, 24 bits
 4 application modes

BM23SPKA1NB9

Version: 0.94 - 7 - 22/9/2014

BCLK
ADCLRC
DACLRC

ADCDAT
DACDAT

Slave

SCLKn
RFSn
TFSn
DRn
DTn

Master

External CODEC/DSP

BM23

DAC

ADC

ADC

Bn-1

RFSn/TFSn

SCLKn

DRn/DTn

Bn-2 B1 B0 Bn-1 Bn-2 B1 B0

Left Channel

Right Channel

1/fs

Word Length

BCLK
ADCLRC
DACLRC

ADCDAT
DACDAT

Slave

SCLKn
RFSn
TFSn
DRn
DTn

Master

External CODEC/DSP BM23

Application 1

DAC

LineIn

Mode 1: I2S Master

BM23SPKA1NB9

Or

 Solutions with mic and line-in analog input with I2S audio output
 Mic for Bluetooth SCO link
 Line-in for external audio playback(for high SNR requirement)

Version: 0.94 - 8 - 22/9/2014

BCLK
ADCLRC
DACLRC

ADCDAT
DACDAT

Master

SCLKn
RFSn
TFSn
DRn
DTn

Slave

External CODEC/DSP

BM23

DAC

ADC

ADC

Bn-1

RFSn/TFSn

SCLKn

DRn/DTn

Bn-2 B1 B0 Bn-1 Bn-2 B1 B0

Left Channel

Right Channel

1/fs

Word Length

BCLK
ADCLRC
DACLRC

ADCDAT
DACDAT

Master

SCLKn
RFSn
TFSn
DRn
DTn

Slave

External CODEC/DSP BM23

Application 1

DAC

LineIn

Mode 2: I2S Slave

BM23SPKA1NB9

Or

 Solutions with mic and line-in analog input with I2S audio output
 Mic for Bluetooth SCO link
 Line-in for external audio playback(for high SNR requirement)

Version: 0.94 - 9 - 22/9/2014

BCLK
ADCLRC
DACLRC

ADCDAT
DACDAT

Slave

SCLKn
RFSn
TFSn
DRn
DTn

Master

External CODEC/DSP

BM23

DAC

ADC

ADC

Bn-1

RFS0/TFS0

SCLK0

DR0/DT0

Bn-2 B1 B0

Bn-1 Bn-2 B1 B0

Left Channel

1/fs

Word Length

Right Channel

Mode 3: PCM master

BM23SPKA1NB9

Version: 0.94 - 10 - 22/9/2014