Schematic diagrams
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Figure 51. Audio codec device schematic diagram
20
25
Audio
MB1144
B-02
6/24/2015
Title:
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Reference:
Date:
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of
A3
Revision:
STM32L476G-EVAL
Project:
SAI1_SCKB
Default I2C Address:0011010
PD6
ADCDAT1
F2
ADCLRCLK1/GPIO1
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
BCLK1
G1
CIFMODE
A4
CPCA
G8
DMICCLK
C6
AGND
E7
AGND
E8
AVDD2
D8
GPIO2/MCLK2
E1
GPIO3/BCLK2
H2
GPIO4/LRCLK2
F4
GPIO5/DACDAT2
H3
GPIO6/ADCLRCLK2
G4
GPIO7/ADCDAT2
E5
GPIO8/DACDAT3
H4
GPIO9/ADCDAT3
F5
GPIO10/LRCLK3
H5
GPIO11/BCLK3
F6
HP2GND
F7
HPOUT1FB
G5
HPOUT1L
H6
HPOUT1R
G6
HPOUT2N
F9
HPOUT2P
F8
IN1LN
D7
IN1LP
C8
IN1RN
B7
IN1RP
C7
IN2LN/DMICDAT1
B9
IN2LP/VRXN
B8
IN2RN/DMICDAT2
A9
IN2RP/VRXP
A8
LDO1ENA
D4
LDO1VDD
E9
LDO2ENA
D5
LDO2VDD
D1
LINEOUT1N
C5
LINEOUT1P
B5
LINEOUT2N
C4
LINEOUT2P
B4
LINEOUTFB
A6
LRCLK1
E3
MCLK1
D3
MICBIAS1
A7
MICBIAS2
B6
REFGND
A5
SCLK
H1
SDA
F3
SPKGND1
A1
SPKGND2
C1
SPKMODE
A3
SPKOUTLN
B1
SPKOUTLP
A2
SPKOUTRN
C3
SPKOUTRP
B3
SPKVDD1
B2
SPKVDD2
C2
VMIDC
C9
VREFC
E6
U29
WM8994ECS/R
C1
11
100nF
C1
23
100nF
VDD
+1V8
VDD
SAI1_FSB
SAI1_SDB
PF8
PF9
PF6
CODEC_INT
I2C_SCL
PG13
PG14
SAI1_MCKB
PF7
C1
05
100nF
C1
06
100nF
R195
20
R196
20
C103
2.2uF
C102
2.2uF
C104
2.2uF
GND
5
DOUT
4
CLK
3
VDD
1
LR
2
U35
MP34DT01TR
GND
5
DOUT
4
CLK
3
VDD
1
LR
2
U36
MP34DT01TR
3
2
1
JP16
3
2
1
JP14
MICBIAS1
VDD
C1
42
100nF
PC0
+3V3
C1
21
100nF
+1V8
+3V3
+1V8
C1
09
100nF
C1
39
100nF
R197 [N/A]
VDD
PG6
R200
10K
R238
10K
C108
1uF
C1
10
1uF
C1
18
1uF
C1
26
4.7uF
C1
20
4.7uF
C1
22
4.7uF
C125
4.7uF
C127
4.7uF
C128
4.7uF
PC2
R224
1K
R225
180
GND
R226
1K
R227
180
GND
GND
I2C_SDA
DMIC_DATIN
GND
DFSDM_CKOUT
R205
0
R222
0
R198
0
R208
0
R201
0
R199
0
SAI1_SDA
C129
4.7uF
C130
4.7uF
Operating range: 1.62<VDD<3.6V
2
6
4
3
CN20
PJ3028B-3
2
6
4
3
CN21
PJ3028B-3
R191
0
GND
R192
0
GND
R221
0
R220
0
GND