Datasheet
Schematic
4-3
Schematic, PCB Layout, and Bill of Materials
Figure 4−1. SRC4194EVM Schematic Diagram, Page 1 of 2
VDD18
28
VDD18
27
REGEN
26
VDD33
25
VDD33
24
DGND
23
H/S
22
RST
21
RCKIA
20
MUT EA
19
RDYA
18
RATIOA
17
MODEA2
16
MODEA1
15
MODEA0
14
DEMA1
13
DEMA0
12
DDNA
11
LGRPA1
10
LGRPA0
9
BYPA
8
OWLA1
7
OWLA0
6
OFMTA1
5
OFMTA0
4
IFMTA2
3
IFMTA1
2
IFMTA0
1
RCKIB
29
MUT EB
30
RDYB
31
RATIOB
32
MODEB2 (CDIN)
33
MODEB1 (CCLK)
34
MODE B0 (CS)
35
DEMB1 (CDOUT)
36
DEMB0
37
DDNB
38
LGRPB1
39
LGRPB0
40
BYPB
41
OWLB1
42
OWLB0
43
OFMTB1
44
OFMTB0
45
IFMTB2
46
IFMTB1
47
IFMTB0
48
SDOUTB
49
BCKOB
50
LRCKOB
51
TDMIB
52
BCKIB
53
LRCKIB
54
SDINB
55
VIO
56
DGND
57
SDINA
58
LRCKIA
59
BCKIA
60
TDMIA
61
LRCKOA
62
BCKOA
63
SDOUTA
64
U1
SRC4194IPAG
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SW1
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SW4
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SW2
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SW5
C23
0.1uF
C24
0.1uF
C26
0.1uF
C8
10uF
C9
10uF
C10
10uF
RN1
100
RN2
10K
RN4
10K
RN8
10K
RN6
10K
RN9
10K
RN7
10K
RN5
10K
RN3
10K
VDD33 VDD18
VIO
VIO
VIO
VIO
VIO
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U2A
SN74ALVC244PW
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U3A
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U2B
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U3B
SN74ALVC244PW
VIO
C27
0.1uF
C25
0.1uF
VIO
2 4
53
U4
SN74LVC1G04DBV
VIO
C28
0.1uF
RN14
100
2
4
6
1
3
5
7 8
9 10
J1
HOST PORT
D1
RATIOA
D2
/RDYA
D3
RATIOB
D4
/RDYB
VIO
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
GND
10
DIR
1
VCC
20
OE
19
U5
SN74ALVC245PW
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U6A
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U6B
SN74ALVC244PW
CSS
1
COPY/C
2
L
3
CLK1
4
CLK0
5
MCLK
6
VIO
7
DGND
8
FMT0
9
FMT1
10
SCLK
11
SYNC
12
SDATA
13
M/S
14
MODE
28
U
27
V
26
BLS
25
BLSM
24
EMPH
23
AUDIO
22
MONO
21
MDAT
20
VDD
19
TX+
18
TX−
17
DGND
16
RST
15
U7
DIT4192IPW
1
2
4
53
U8
SN74LVC1G08DBV
1OE
1
1A
2
1Y
3
2OE
4
2A
5
2Y
6
GND
7
3Y
8
3A
9
3OE
10
4Y
11
4A
12
4OE
13
VCC
14
U9
SN74ALVC125PW
RN16
100
VIO
R4
120
R6
150
C42
0.1uF
C41
0.1uF
C32
0.1uF
C11
10uF
C13
10uF
+5V
J3
AES OUT A
C31
0.1uF
VIO
VIO
C33
0.1uF
VIO
C29
0.1uF
VIO
C35
0.1uF
2 4
53
U10
SN74LVC1G04DBV
VIO
C34
0.1uF
RN15
100
2
4
6
1
3
5
7 8
9 10
J2
OUTPUT PORT A
J4
DIT CLOCK A
R8
75
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
GND
10
DIR
1
VCC
20
OE
19
U15
SN74ALVC245PW
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U16A
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U16B
SN74ALVC244PW
CSS
1
COPY/C
2
L
3
CLK1
4
CLK0
5
MCLK
6
VIO
7
DGND
8
FMT0
9
FMT1
10
SCLK
11
SYNC
12
SDATA
13
M/S
14
MODE
28
U
27
V
26
BLS
25
BLSM
24
EMPH
23
AUDIO
22
MONO
21
MDAT
20
VDD
19
TX+
18
TX−
17
DGND
16
RST
15
U17
DIT4192IPW
1
2
4
53
U18
SN74LVC1G08DBV
1OE
1
1A
2
1Y
3
2OE
4
2A
5
2Y
6
GND
7
3Y
8
3A
9
3OE
10
4Y
11
4A
12
4OE
13
VCC
14
U19
SN74ALVC125PW
RN19
100
VIO
R5
120
R7
150
C44
0.1uF
C43
0.1uF
C37
0.1uF
C12
10uF
C14
10uF
+5V
J8
AESOUT B
C36
0.1uF
VIO
VIO
C38
0.1uF
VIO
C30
0.1uF
VIO
C40
0.1uF
2 4
53
U20
SN74LVC1G04DBV
VIO
C39
0.1uF
RN18
100
2
4
6
1
3
5
7 8
9 10
J7
OUTPUT PORT B
J9
DIT CLOCK B
R9
75
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
SW6
RN10
10K
VIO
RN11
10K
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
SW8
VIO
1 2
J18
TDM
SW3
RST
SW9
B_DITRST
SW7
A_DITRST
R1
10K
VIO
C1
0.01uF
VIO
C3
0.01uF
R3
10K
R2
10K
C2
0.01uF
VIO
VIO
VIO
BCKIA
LRCKIA
SDINA
BCKIB
LRCKIB
SDINB
RCKIA
RCKIB
B_/DIR
B_IM/S
A_/DIR
A_IM/S
VIO
R20
10K
VIO