User Manual
Stereo Module
2015 Microchip Technology Inc.
Page 26
P
reliminary
Edition
SLK0
DR0
ADAP_IN
C20
0.1u/16V
DT0
EAN
P0_0
System Configuration
LINE IN Detection
P2_0
P2_4
PWR/MFB/UART_RX_IND
System Configuration
System Configuration
P3_0
GPIO Description
MFB
Receive frame synchronization
Transmit frame synchronization
BAT_IN
P0_4
Serial clock
P1
PJ-3894D-S125
2
3
4
1
AIL
AIR
D2
SPE0572
21
STEREO AUX LINE INPUT
*P30 Low Active
Line In Detect
Serial data receive
D1
SPE0572
21
D3
SPE0572
21
BAT_IN
P3_0
C8
470p/50V
C12
470p/50V
C11
0.1u/16V
C9
10u/16V
C10
10u/16V
R9
10K
12
R12
10K
12
R10
1K
1 2
R11
1K
1 2
Serial data transmit
ADAP_IN
AMP_EN
JP2
JP 1x8
1
2
3
4
5
6
7
8
HCI_TXD
HCI_RXD
C17
1u/16V
DR0
SLK0
R2 33
1 2
TFS0
RFS0
DT0 RST_N
C18
1u/16V
MIC _BIAS
MIC_N1
MIC_P1
RFS0
DP1 DP-4
21
P0_0
C5
10u/16V
CODEC_VO
Audio AMP Enable
P2 DC-JACK
1
2
3
I2S INTERFACE
MIC_N1
MIC_P1
P0_4
C1
2.2u/6.3V
R7 1K
1 2
R6 1K
1 2
C2
2.2u/6.3V
C4
220p/50V
R8 2K
1 2
MI C_BIAS
BATTERY CONNECTOR
MFB
JP3
JP 1x8
1
2
3
4
5
6
7
8
P0_0
DC POWER SOURCE
C16
0.1u/16V
UART_TX_IND(Flash)
TP1
TP-4
1
LED
TX_ IND
C3 0.047u/25V
TP3
TP-4
1
C7
4.7u/10V
MI C_BIAS
C6 0.047u/25V
JP1
JP 1x8
1
2
3
4
5
6
7
8
MIC INPUT
SYS_PWR
RST_N
ADAP_IN
R3 33
1 2
R1 33
1 2
R5 33
1 2
R4 33
1 2
MFB/RX_IND
RESET_n
JP4 SJP 1x2
2
1
34
UAR T_RXD
UART CONTROL
(by MCU)
PCB1
FP-BM23
P0_0
1
RFS0
2
TF S0
3
SLK0
4
DR0
5
DT0
6
P0_4
7
EAN
8
MIC1_P
9
MIC1_N
10
MIC_BIAS
11
VDDA
12
AIR
13
AIL
14
GND
15
SYS_PWR
25
AMB_DET
24
BAT_IN
23
ADAP_IN
22
P0_1
21
P1_5
20
VDD_IO
19
NC
18
NC
17
RST
16
GND
40
P2_0
39
P3_0
38
P2_0
37
P2_7
36
P0_5
35
HCI_RXD
34
HCI_TXD
33
P0_3
32
P0_2
31
P2_4
30
LED2
29
LED1
28
MFB
27
BK_OUT
26
MFB
P2_0
P3_0
HCI_TXD
HCI_RXD
P2_4
LED2
LED1
TP2
TP-4
1
BAT_IN
RESERVE For
BLUETOOTH DEBUG
LED2
C13
0.1u/16V
RED
BLUE
LED1 LED-B
12
LED2 LED-HR
12
SYS_PWR
Board Name
Size
Title Rev
Date: Sheet of
P/N
Reference Circuit of BM23
1.0
Reference Circuit of BM23
B
2 2Friday , March 13, 2015
XXXX
5F, No.5, Industry E. Rd. VII, Hsinchu Science Park,
Hsinchu City 30078, Taiwan
TEL. 886-3-5778385
LED1
UAR T_TXD
EAN
P2_0
P2_4
HCI_RXD
EAN
P0_4
HCI_TXD
TP4
TP-4
1
Audio AMP Enable(ROM)
AIR
AIL
TFS0
5.2 BM23 REFERENCE CIRCUIT