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Schematic and Bill of Materials
7.2 AC-MB Schematic and Bill of Materials
This section provides the schematics and BOM for the AC-MB.
7.2.1 AC-MB Schematic
Figure 7-2
shows the schematics for the ADCx140EVM-PDK.
U9
PLT133/T10W
1
Optical
VIN
Output
U11
+3.3V
15
S/PDIF-OUT
MPO0
16
MPO1
37
RXIN0
35
RXIN1
GND
33
S/PDIF-IN
RXIN2
32
RXIN3
31
RXIN4/ASCKI0
U13
PLR135/T10
30
RXIN5/ABCKI0
3
29
Optical
VOUT
RXIN6/AFSYNCI0
28
Input
RXIN7/ADIN0
25
X-SCL
MC/SCL
+3.3V
24
X-SDA
MDI/SDA
23
MDO/ADR0
26
MS/ADR1
27
MODE
GND
34
EVM-RSTz
RST
Y2
2
1
39
G
XTI
4
3
40
G
XTO
24.576MHz
C48
C49
27pF
27pF
GND
50V
50V
VINR
48
VINR
47
VINL
VINL
GND
GND
44
VCOM
C50
J6
2
10uF
43
FILT
4
16V
Analog
5
C51
Input
10uF
PCM9211PT
3
1
16V
GND
R42
R43
200k
200k
R44
GND
680
C52
C53
C54
C55
10uF
0.1uF
4700pF
50V
GND
GND
16V
16V
25V
0.068uF
GND
GND
GND
GND
+3.3V
+3.3V
+5V-PCM
+5V-PCM
+3.3V
+3.3V
+3.3V
C56
C57
C58
C59
C60
C61
C62
0.1uF
0.1uF
10uF
0.1uF
0.1uF
10uF
0.1uF
16V
16V
16V
16V
16V
16V
16V
GND
GND
GND
GND
GND
GND
GND
+3.3V
IOVDD
+3.3V
U20
1
8
VCCA
VCCB
R45
5
EN
10.0k
3
6
X-SCL
SDAA
SDAB
EVM-SCL
2
7
X-SDA
SCLA
SCLB
EVM-SDA
4
GND
TCA9802DGKR
I²C Translator
GND
+3.3V
IOVDD
U21
14
13
VCCA
VCCB
15
DIR1
16
DIR2
5
DIR3
6
DIR4
1
12
X-P2
A1
B1
EVM-GPI2
2
11
X-P3
A2
B2
EVM-GPI1
3
10
X-P0
A3
B3
EVM-GPO2
4
9
X-P1
A4
B4
EVM-GPO1
7
8
OE
GND
SN74AVC4T774RSVR
GPIO Translator
GND
GND
+3.3V
IOVDD
+3.3V
IOVDD
+3.3V
IOVDD
C74
C75
C76
C77
C78
C79
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
16V
16V
16V
16V
16V
16V
GND
GND
GND
GND
GND
GND
24
ADCx120EVM-PDK, PCMD3140EVM-PDK Evaluation Module
Aud io Conver ters Motherboard DC058 Rev A
PCM9211, Aud io Interface and Test Po ints
+5V-PCM
+3.3V
+3.3V
46
VCCAD
42
VCC
36
VDDRX
22
DVDD
20
9211-MCLK
9211-MCLK
SCKO
19
BCK
9211-BCLK
9211-BCLK
18
9211-FSYNC
FSYNC
9211-FSYNC
17
9211-DOUT
DOUT
9211-DOUT
10
R39
0
9211-DIN
9211-DIN1
MPIO_C3
R40
9
MPIO_C2
DNP
9211-DIN2
8
MPIO_C1
7
MPIO_C0
14
MPIO_B3
U14B
+3.3V
13
MPIO_B2
12
MPIO_B1
11
1
5
MPIO_B0
NC
VCC
6
3
MPIO_A3
GND
5
MPIO_A2
4
MPIO_A1
3
MPIO_A0
GND
U14A
1
2
4
9211-LOCK
ERROR/INT0
2
NPCM/INT1
SN74LVC1G14DCKR
41
AGND
45
D5
AGNDAD
38
Blue
GNDRX
21
DGND
S/PDIF Lock
R41
1.5k
GND
GND
+3.3V
+3.3V
+5V
+5V-PCM
L4
C63
C64
10uF
0.1uF
16V
16V
100 ohm
GND
GND
PCM9211 Circuit
+3.3V
IOVDD
U19
14
13
VCCA
VCCB
15
DIR1
16
DIR2
5
DIR3
6
DIR4
1
12
X-SPI-CLK
A1
B1
EVM-SPI-CLK
2
11
A2
B2
3
10
RSTz
A3
B3
EVM-RSTz
4
9
A4
B4
7
8
OE
GND
SN74AVC4T774RSVR
SPI / RST Translator
GND
GND
+3.3V
IOVDD
U22
14
13
VCCA
VCCB
15
DIR1
16
DIR2
5
DIR3
6
DIR4
1
12
X-SPI-SS1
A1
B1
EVM-SPI-SS1
2
11
X-SPI-SS0
A2
B2
EVM-SPI-SS0
3
10
X-SPI-MOSI
A3
B3
EVM-SPI-MOSI
4
9
X-SPI-MISO
A4
B4
EVM-SPI-MISO
7
8
OE
GND
SN74AVC4T774RSVR
SPI Translator
GND
GND
+3.3V
IOVDD
C80
C81
0.1uF
0.1uF
16V
16V
Control Interface Translation
GND
GND
Figure 7-2. AC-MB Schematics
Copyright © 2021 Texas Instruments Incorporated
+3.3V
U10
16
VCC
2
X-MCLK
1B1
3
9211-MCLK
1B2
X-BCLK
5
2B1
6
9211-BCLK
2B2
11
X-FSYNC
3B1
10
9211-FSYNC
3B2
14
4B1
13
4B2
X-MCLK
X-BCLK
1
X-FSYNC
I2S-SEL-S1
S
X-DIN1
SN74CB3Q3257DGVR
X-DIN2
X-DIN3
GND
X-DIN4
X-DOUT1
+3.3V
X-DOUT2
U15
X-DOUT3
16
X-DOUT4
VCC
2
From XMOS
X-DIN1
1B1
3
9211-DIN1
1B2
5
X-DIN2
2B1
6
9211-DIN2
2B2
11
X-DIN3
3B1
10
3B2
14
X-DIN4
4B1
13
4B2
1
I2S-SEL-S1
S
SN74CB3Q3257DGVR
GND
9211-MCLK
9211-BCLK
+3.3V
9211-FSYNC
U17
16
9211-DIN1
VCC
9211-DIN2
2
X-DOUT1
1B1
3
9211-DOUT
9211-DOUT
1B2
5
From PCM9211
X-DOUT2
2B1
6
9211-DOUT
2B2
X-DOUT3
11
3B1
10
3B2
14
X-DOUT4
4B1
13
4B2
1
I2S-SEL-S1
S
SN74CB3Q3257DGVR
GND
Digital Aud io Mux
+3.3V
+3.3V
IOVDD
+3.3V
+3.3V
IOVDD
+3.3V
+3.3V
IOVDD
C65
C66
C67
C68
C69
C70
C71
C72
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
16V
16V
16V
16V
16V
16V
16V
16V
GND
GND
GND
GND
GND
GND
GND
GND
SW2 Position
EVM-MCLK
S1
S0
AUDIO
EVM-BCLK
ON
ON
USB
EVM-FSYNC
OFF
O O N N
OPTICAL/ANALOG
EVM-DOUT1
+3.3V
+3.3V
X
O O F F F F
EXTERNAL ASI
EVM-DOUT2
EVM-DOUT3
EVM-DOUT4
EVM-DIN1
R46
R47
EVM-DIN2
10.0k
10.0k
EVM-DIN3
EVM-DIN4
SW2
3
2
I2S-SEL-S0
I2S-SEL-S0
4
1
I2S-SEL-S1
I2S-SEL-S1
A6SN-2104
GND
Audio Serial Interface Selection
TP1
TP4
+5V
+5V
TP3
SCL
TP5
SCLK
TP6
DNP
SDA
MISO
TP11
DNP
DNP
MOSI
TP12
DNP
DNP
SS0
TP13
EVM-SCL
EVM-SPI-CLK
DNP
SS1
TP14
EVM-SDA
EVM-SPI-MISO
DNP
+3.3V
+3.3V
EVM-SPI-MOSI
DNP
EVM-SPI-SS0
DNP
EVM-SPI-SS1
I²C
SPI
Power
+3.3V
IOVDD
U12
14
13
VCCA
VCCB
15
DIR1
16
DIR2
4
5
1A
AC-MB-MCLK
DIR3
6
DIR4
7
AC-MB-BCLK
2A
1
12
A1
B1
9
AC-MB-FSYNC
3A
2
11
A2
B2
12
4A
3
10
A3
B3
15
4
9
OE
A4
B4
8
7
8
GND
I2S-SEL-S0
OE
GND
SN74AVC4T774RSVR
GND
GND
GND
+3.3V
IOVDD
U16
14
13
VCCA
VCCB
15
DIR1
16
DIR2
4
AC-MB-DIN1
5
1A
DIR3
6
DIR4
7
AC-MB-DIN2
2A
1
12
A1
B1
9
3A
AC-MB-DIN3
2
11
A2
B2
12
AC-MB-DIN4
4A
3
10
A3
B3
15
4
9
OE
A4
B4
8
7
8
GND
I2S-SEL-S0
OE
GND
SN74AVC4T774RSVR
GND
GND
GND
+3.3V
IOVDD
U18
14
13
VCCA
VCCB
15
DIR1
16
DIR2
4
AC-MB-DOUT1
5
1A
DIR3
6
DIR4
7
AC-MB-DOUT2
2A
1
12
A1
B1
9
AC-MB-DOUT3
3A
2
11
A2
B2
12
AC-MB-DOUT4
4A
3
10
A3
B3
15
4
9
OE
A4
B4
8
7
8
GND
I2S-SEL-S0
OE
GND
SN74AVC4T774RSVR
GND
GND
Digital Aud io Translator / Buffer
C73
0.1uF
16V
GND
Digital Audio Mux/Translation
J7
21
22
19
20
17
18
15
16
J8
13
14
11
12
1
EVM-RSTz
9
10
3
EVM-GPO1
7
8
5
EVM-GPO2
5
6
7
3
4
9
EVM-GPI1
1
2
11
EVM-GPI2
13
15
17
Extern al Aud io
EVM-SPI-CLK
GND
19
EVM-SPI-MISO
21
EVM-SPI-MOSI
23
EVM-SPI-SS0
25
PSIA Connector
27
EVM-DOUT1
29
EVM-DOUT2
31
33
EVM-MCLK
35
37
EVM-BCLK
39
EVM-FSYNC
TP2
+1.8V
+1.8V
TP7
TP8
TP9
TP10
DNP
GND
GND
GND
GND
GND
GND
TP15
+1V
+1.0V
DNP
GND
GND
GND
GND
Test Points
SBAU359A – MAY 2019 – REVISED JUNE 2021
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EVM-MCLK
EVM-MCLK
EVM-BCLK
EVM-BCLK
EVM-FSYNC
EVM-FSYNC
EVM-DOUT1
EVM-DOUT1
EVM-DOUT2
EVM-DOUT2
EVM-DOUT3
EVM-DOUT3
EVM-DOUT4
EVM-DOUT4
EVM-DIN1
EVM-DIN1
EVM-DIN2
EVM-DIN2
EVM-DIN3
EVM-DIN3
EVM-DIN4
EVM-DIN4
+5V
2
IOVDD
4
6
8
10
12
14
16
18
EVM-SCL
20
EVM-SDA
22
24
EVM-SPI-SS1
26
28
EVM-DOUT3
30
EVM-DOUT4
32
EVM-DIN1
34
EVM-DIN2
36
38
EVM-DIN3
40
EVM-DIN4
GND
EVM Connector
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