Figure 12. Audio - ST STM32F411 User Manual

1
A
Audio_SDA
Audio_SCL
I2S3_MCK
I2S3_SCK
I2S3_SD
I2S3_WS
Audio_RST PD4
PD4
R43
10K
B
2V5
C44
100nF
C
3V C66
C65
100nF
R62 U10 10uF
[NA]
1 6
GND VDD
2 5
LR DOUT
3 4
GND CLK
R61
0 MP45DT02
D
1

Figure 12. Audio

2
U8
PB9 1
PB9 SDA HP/LINE_OUTA
PB6 2
PB6 SCL HP/LINE_OUTB
3
A0 SPKR/HP
PC7 37
PC7 MCLK
PC10 38
PC10 SCLK SPKR_OUTA+
PC12 39
PC12 SDIN SPKR_OUTA-
PA4 40
PA4 LRCK SPKR_OUTB+
32
RESET SPKR_OUTB-
10
-VHPFILT
11
FLYN
AIN1B
C52 C56
AIN1A
1uF 1uF
12
FLYP AIN2B
AIN2A
AIN3B
13
+VHP AIN3A
16
C64 VA AIN4B
C45 C59
34
1uF VD AIN4A
100nF 100nF
20
TSTO
3V 36
TSTO AFILTB
33
VL AFILTA
35
DGND FILT+
C46
41
GND/Thermal Pad AGND
100nF
CS43L22
I2C address 0x94
3V
PC3 PDM_OUT
PC3
PB10 CLK_IN
PB10
2
3
R59
R60
51 51
C60 C61
CN4
22nF 22nF
2
15
14
31 3
R63
1
0 ST-225-02
4
6
7
9 C49 C50
100nF 100nF
8
VP 3V
5
VP
30 C47
R46
R45
29 PA4 Audio_DAC_OUT
26
100
[NA]
R44
1uF
25
24
100K
R50
23
22 C58
C57
100K
R51 R52 R53
10nF
21
100 1.2K
0
19 1uF
VQ
R47
28
27
[NA]
18 C63
C51 1uF
17
C53 150pF
C62 150pF
1uF
Title:
STM32F411E-DISCOVERY Audio
Number: MB1115 Rev:
3
4
A
B
PC3 PDM_OUT
PC4
PC4
C
D
B.2(PCB.SCH) Date: 10/16/2014 Sheet 4 of 6
4