DocID025151 Rev 2
47/70
UM1668
Schematics
69
Figure 28. Audio
STMicroelectronics
Title:
Number:
Rev:
Sheet
of
B.2(PCB.SCH)
Date:
7/24/2013
SAI1_SCKB
2
6
4
3
CN23
P
J3028B-3
Default
I2C
Address:0011010
PF6
MB1045
5
1
6
STM324x9I-EVAL
Audio
ADCDAT1
F2
ADCLR
C
L
K
1/GPI
O
1
G3
AGND
D6
CPVDD
G9
CPVOUTN
H7
CPVOUTP
G7
CS/ADDR
G2
DACDAT1
E4
CPGND
H9
DCVDD
F1
DBVDD
D2
DGND
E2
CPCB
H8
AVDD1
D9
BCLK
1
G1
C
IF
MODE
A4
CPCA
G8
DMICCLK
C6
AGND
E7
AGND
E8
AVDD2
D8
G
P
IO2/MCLK
2
E1
G
P
IO3/BCLK
2
H2
G
P
IO4/LRCLK
2
F4
G
P
IO5/DACDAT2
H3
G
P
IO6/ADCLRCLK
2
G4
G
P
IO7/ADCDAT2
E5
G
P
IO8/DACDAT3
H4
G
P
IO9/ADCDAT3
F5
G
P
IO10/LRCLK
3
H5
G
P
IO11/BCLK
3
F6
HP
2GND
F7
H
P
OUT1FB
G5
H
P
OUT1L
H6
H
P
OUT1R
G6
HPOUT2N
F9
HPOUT2P
F8
IN1LN
D7
IN1LP
C8
IN1RN
B7
IN1RP
C7
IN
2
L
N/DMICDAT1
B9
IN2LP
/VRXN
B8
IN2RN/DMICDAT2
A9
IN2RP/VRXP
A8
L
DO1ENA
D4
L
DO1VDD
E9
L
DO2ENA
D5
L
DO2VDD
D1
L
INEOUT1N
C5
L
INEOUT1P
B5
L
INEOUT2N
C4
L
INEOUT2P
B4
L
INEOUTFB
A6
L
RCLK
1
E3
MCLK
1
D3
M
ICBIAS1
A7
M
ICBIAS2
B6
REFG
N
D
A5
SCLK
H1
SDA
F3
SPK
GND1
A1
SPK
GND2
C1
SPK
MODE
A3
S
P
K
OUTLN
B1
S
P
K
OUTLP
A2
SPK
OUTRN
C3
SPK
OUTRP
B3
SPK
VDD1
B2
SPK
VDD2
C2
VMID
C
C9
VREFC
E6
U17
WM8994ECS/R
C83
100nF
C66
100nF
+3V3
+1V8
+3V3
SAI1_FS
B
SAI1_SDB
S
A
I1_SDA
PF8
PF9
PE6
Audio_IN
T
C62
1uF
I2C1_SDA
I2C1_SCL
PB9
PB6
SAI1_MCLK
B
PF7
R176
2
K
2
C75
100nF
C78
100nF
R180
20
R182
20
C
7
1
2.2uF
C
6
8
2.2uF
C
7
4
2.2uF
L
9
B
L
M18HE601SN1D
C73
33pF
C88
33pF
C86
33pF
C80
33pF
L
8
B
L
M18HE601SN1D
L
7
B
L
M18HE601SN1D
L
6
B
L
M18HE601SN1D
GND
5
DOUT
4
CLK
3
VDD
1
LR
2
U18
MP34DT01TR
GND
5
DOUT
4
CLK
3
VDD
1
LR
2
U19
MP34DT01TR
3
2
1
JP1
3
3
2
1
JP1
4
3
2
1
JP1
5
MICBIAS1
+3V3
C99
100nF
M
IC_CK
time
slot1
of
SAI
time slot0
of
SAI
I2S3_SD
PD6
C79
[N/A]
C87
[N/A]
+3V3
C81
100nF
+1V8
+3V3
+1V8
C84
100nF
C89
100nF
To
IO
expandor
R185
[N/A]
+3V3
EXP_IO3
R184
1
0
K
R204
1
0
K
C67
1
u
F
C85
1uF
C65
1uF
C82
4.7uF
C64
4.7uF
C63
4.7uF
C61
4.7uF
C70
4.7uF
C72
4.7uF
3
2
1
4
CN24
ETE
284392-4
or
XY303V
PC7
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