Datasheet
Schematic
4-4
Figure 4−2. SRC4194EVM Schematic Diagram, Page 2 of 2
C
1
CD/F1
2
CC/F0
3
CB/E2
4
CA/E1
5
C0/E0
6
VDD
7
DGND
8
RXP
9
RXN
10
FSYNC
11
SCK
12
CS12/FCK
13
U
14
CBL
15
SEL
16
M3
17
M2
18
MCK
19
FILT
20
AGND
21
VCC
22
M0
23
M1
24
ERF
25
SDATA
26
CE/F2
27
VERF
28
U14
CS8414−CS
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U12A
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U12B
SN74ALVC244PW
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
U11
SN74ALVC245PW
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U13A
SN74LVC244APW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U13B
SN74LVC244APW
J6
AESIN A
R10
75
C4
0.01uF
C5
0.01uF
C49
0.1uF
C45
0.1uF
C15
10uF
C18
10uF
+5V +5V
D5
LOCK A
R16
475
+5V
R17
475
C72
0.068uF
C61
0.1uF
VIO
RN17
100
2
4
6
1
3
5
7 8
9 10
J5
INPUTPORTA
VIO
C55
0.1uF
VIO
C56
0.1uF
C
1
CD/F1
2
CC/F0
3
CB/E2
4
CA/E1
5
C0/E0
6
VDD
7
DGND
8
RXP
9
RXN
10
FSYNC
11
SCK
12
CS12/FCK
13
U
14
CBL
15
SEL
16
M3
17
M2
18
MCK
19
FILT
20
AGND
21
VCC
22
M0
23
M1
24
ERF
25
SDATA
26
CE/F2
27
VERF
28
U24
CS8414−CS
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U22A
SN74ALVC244PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U22B
SN74ALVC244PW
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
U21
SN74ALVC245PW
G
19
A1
11
Y1
9
A2
13
Y2
7
A3
15
Y3
5
A4
17
Y4
3
U23B
SN74LVC244APW
J11
AESIN B
R11
75
C6
0.01uF
C7
0.01uF
C50
0.1uF
C46
0.1uF
C16
10uF
C19
10uF
+5V +5V
D6
LOCK B
R18
475
+5V
R19
475
C73
0.068uF
RN20
100
2
4
6
1
3
5
7 8
9 10
J10
INPUTPORTB
VIO
C57
0.1uF
VIO
C58
0.1uF
G
1
A1
2
Y1
18
A2
4
Y2
16
A3
6
Y3
14
A4
8
Y4
12
VCC
20
GND
10
U23A
SN74LVC244APW
C70
0.1uF
VIO
2 4
53
U27
SN74LVC1G04DBV
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
U26
SN74ALVC125PW
VDD1
1
SCKO2
2
SCKO3
3
DGND1
4
FS1
5
FS2
6
SR
7
VCC
8
AGND
9
XT1
10
XT2
11
CSEL
12
VDD2
13
MCKO1
14
MCKO2
15
DGND2
16
DGND3
17
SCKO1
18
SCKO0
19
VDD3
20
U25
PLL1705DBQ
J12
SRC A EXT CLOCK
R12
75
VIO
C47
0.1uF
VIO
VIO
C48
0.1uF
C51
0.1uF
C20
10uF
REG +3.3V
C17
10uF
C54
0.1uF
REG +3.3V
X1
27.000 MHz
C74
27pF
C75
27pF
C52
0.1uF
C53
0.1uF
1
2
3
4
5
6
J14
POWER SUPPLIES
C62
0.1uF
C64
0.1uF
C63
0.1uF
C71
0.1uF
C82
100uF
C85
100uF
C84
100uF
C83
100uF
EXT VIO
EXT VDD33
EXT VDD18
+5V
VIN
3
VOUT
2
GND
1
U32
REG1117−3.3
VIN
3
VOUT
2
GND
1
U33
REG1117A−1.8
C78
10uF
C79
10uF
C80
10uF
C81
10uF
REG +3.3V +5V REG +1.8V+5V
1 2
3 4
5 6
J15
1 2
3 4
5 6
J16
1 2
3 4
5 6
J17
VIO
VDD33
VDD18
EXTVIOREG +3.3VREG +1.8V
EXT VDD33REG +3.3V
EXT VDD18REG +1.8V
2 4
53
U30
SN74LVC1G04DBV
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
U29
SN74ALVC125PW
VDD1
1
SCKO2
2
SCKO3
3
DGND1
4
FS1
5
FS2
6
SR
7
VCC
8
AGND
9
XT1
10
XT2
11
CSEL
12
VDD2
13
MCKO1
14
MCKO2
15
DGND2
16
DGND3
17
SCKO1
18
SCKO0
19
VDD3
20
U28
PLL1705DBQ
J13
SRC B EXT CLOCK
R14
75
VIO
C65
0.1uF
VIO
C59
0.1uF
C66
0.1uF
C21
10uF
REG +3.3V
C22
10uF
C69
0.1uF
REG +3.3V
X2
27.000 MHz
C76
27pF
C77
27pF
C67
0.1uF
C68
0.1uF
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
SW10
RN12
10K
RN13
10K
REG +3.3V
2 4
53
U31
SN74LVC1G04DBV
VIO
C60
0.1uF
R13
75
R15
75
SDINA
A_IM/S
BCKIA
LRCKIA
B_IM/S
BCKIB
LRCKIB
SDINB
B_/DIR
A_/DIR
REG +3.3V
RCKIB
RCKIA
REG +3.3V