User Manual

Stereo Module

2015 Microchip Technology Inc.
Page 25
P
reliminary
Edition
MIC1
Board Name
Size
Title Rev
Date: Sheet of
P/N
MAIN CIRCUIT
1.1
BM20 Reference Circuit
B
1 1Thursday , April 16, 2015
XXXX
5F, No.5, Industry E. Rd. VII, H sinchu Science Park, Hs inchu City 30078, Taiwan TEL. [phone]
AMP_EN
JP2
JP 1x8
1 2 3 4 5 6 7 8
RST_N HCI _TXD HCI _RXD
TX_IND
Audio AMP Enable
P0_0 MFB
UART_TXD
UART CONT ROL (by MCU)
UART_RXD
RESET_n
MFB/RX_IND
BAT_IN
C19 10u/16VJP5
JP 1x2
1 2
Li Battery Connector
BAT_IN
JP3
JP 1x8
1 2 3 4 5 6 7 8
RESERVE For BLUETOOT H DEBUG
HCI_TXD HCI_RXD EAN P2_4 P2_0
SW1
SW-TACT
1 2 3 4
MFB
HCI_TXD HCI_RXD
EAN P2_0
P2_4
PCB1 BM20
ANT1
38
ANT2
39
ANT3
40
P0_0
1
EAN
2
P3_0
3
P2_0
4
P1_5
5
P0_4
6
SPKR
7
AOHPM
8
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
GND
23
NC
22
BAT_IN
21
ADAP_IN
20
VDD_IO
19
P0_1
18
VCC_RF
17
RST
16
AIL
15
GND
37
P2_4
36
P2_7
35
P0_5
34
HCI_RXD
33
HCI_TXD
32
P0_3
31
P0_2
30
P2_4
29
LED2
28
LED1
27
MFB
26
BK_OUT
25
SYS_PWR
24
5V
MFB
SYS_PWR
R1
1K/1%
12
5V
VDD_IO
C26 1u/10V
P0_0
Q4
STS2306
3
1 2
R10 100K
1 2
R12 100K
12
R13 10K
1 2
Slide Switch Circuit
SYS_PWR
SLIDE_SW
G D S
Q3 STS2301
1
3
2
MFB
ON
SW8 SW-1BIT
1 2
RESET BUTTON SW2 SW-TACT
1 2 3 4
DP1 DP-4
21
RST_N
C3 1u/16V
5V
Q1 MMBT3904
3
2
1
R2 2K
12
C93 NP-0603 C92 NP-0603
5V
C18 10u/16V
LINE_R
P3_0
LINE INPUT
LINE_L
P2 TSH-3865D
4 3 2 10 1
C15 0.1u/16V
R7 0
1 2
R6 0
1 2
R5 NP-0603 R8 NP-0603
C17 1u/16V C16 1u/16V
AIL AIR
VBUS
D- D+ ID
GND
P3 USBM3121-051-1-BN-R
1 2 3 4 5
6
78
9
P0_3
VOL+ FWD
P0_1
C8 15p/50V
SW5 SW-TACT
12 34
C12 15p/50V
P2_7
SW7 SW-TACT
12 34
AOHPM
P0_2
C4 15p/50V
PLAY/PAUSE
SPKR
SW3 SW-TACT
12 34
VOL- REV
SPKL
P7 PJ-2001-5K
1 2 3 4 5
C7 15p/50V
SW4 SW-TACT
12 34
C11 15p/50V
Stereo Jack
P0_5
SW6 SW-TACT
12 34
LED2 LED1
LED1LED-B 12
LED2LED-HR
12
SYS_PWR
Backup Plug-In Reset Circuit
JP6
JP 1x1
1
NFC
C9
1u/16V
MIC_BIAS MIC_N1 MIC_P1 AOHPM AMP_EN P3_0 AIR P0_0 SPKL SPKR
P0_1
RST_N
AIL
VDD_IO
BAT_I N
MIC_BIAS
C13 2.2u/6.3VR3
1K
1 2
R75 1K
1 2
C72 2.2u/6.3V
MIC_P1 MIC_N1
P0_5
C10 1u/16V
R4 2K
1 2
MFB P2_4 P2_7
C14 1u/16V
SYS_PWR
P0_2 LED2 LED1
P1 PJ-2001-5K
1 2 3 4 5
P0_3
5.0 REFERENCE CIRCUIT
5.1 BM20 REFERENCE CIRCUIT