Circuit Diagrams and PWB Layouts
49
7.
Scaler (22"): TMDS251 HDMI 2:1 Switch
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
HPD_
S
INK
RR1XC-
HPD_
S
INK
RR0XC-
RR1XC-
RR0XC-
HDMI_
3
V
3
HDMI_
3
V
3
DV
33
+5V
HPDIN
14,20
RX0_CB
8
HDMI_
S
EL
14,20
O
S
CL1
9
RX0_1B
8
RX0_1
8
RX0_2
8
O
S
DA1
9
RX0_0
8
RX0_C
8
RX0_0B
8
RX0_2B
8
HPD1
14
RR1XC+
14
RR1XC-
14
D
S
DA_1
14
D
S
CL_1
14
RR1X0+
14
RR1X0-
14
RR1X1-
14
RR1X1+
14
RR1X2-
14
RR1X2+
14
RR0XC-
14
HPD0
14
D
S
DA_0
14
D
S
CL_0
14
RR0XC+
14
RR0X0-
14
RR0X0+
14
RR0X1-
14
RR0X1+
14
RR0X2-
14
RR0X2+
14
R551,R552 Clo
s
ed U502 on
s
older
s
ide
U502 B4
C5
3
0 D
3
C524 D4
C526 D4
R551 C5
C52
3
D5
C525 D4
R502 C2
R511 C
3
R552 B5
C522 D5
R509 D2
C52
8
D4
C521 C4
R5
33
C2
R504 C
3
R5
3
6 A
3
R512 C
3
D511 C5
R5
3
2 C2
L501 D5
C527 D4
R5
3
4 D2
R5
3
5 A
3
C529 D
3
NC
1
NC
2
GND
3
NC
4
NC
5
Vcc
6
NC
7
NC
8
GND
9
NC
10
NC
11
Vcc
12
NC
1
3
NC
14
GND
15
V
S
ADJ
16
TX2
17
TX2
1
8
Vcc
19
TX1
20
TX1
21
GND
22
TX0
2
3
TX0
24
Vcc
25
TXC
26
TXC
27
GND
2
8
S
CL_
S
INK
29
S
DA_
S
INK
3
0
HPD_
S
INK
3
1
S
1
3
2
S
2
33
EQ
3
4
HPD1
3
5
S
DA
1
3
6
S
CL1
3
7
RX1C
38
RX1C
3
9
Vcc
40
RX10
41
RX10
42
GND
4
3
RX11
44
RX11
45
Vcc
46
RX12
47
RX12
4
8
VDD
49
HPD2
50
S
DA2
51
S
CL2
52
RX2C
5
3
RX2C
54
Vcc
55
RX20
56
RX20
57
GND
5
8
RX21
59
RX21
60
Vcc
61
RX22
62
RX22
6
3
NC
64
U502
TMD
S
251PAGR
U502
TMD
S
251PAGR
C5
3
0
0.1UF16V
C5
3
0
0.1UF16V
C524
0.1UF16V
C524
0.1UF16V
C526
0.1UF16V
C526
0.1UF16V
R551
NC/1K OHM 1/16W
R551
NC/1K OHM 1/16W
C52
3
0.1UF16V
C52
3
0.1UF16V
C525
0.1UF16V
C525
0.1UF16V
R502
2.2K OHM 1/10W
R502
2.2K OHM 1/10W
R511
2.2K OHM 1/10W
R511
2.2K OHM 1/10W
R552
NC/1K OHM 1/16W
R552
NC/1K OHM 1/16W
+
C522
10UF16V
+
C522
10UF16V
R509
NC
R509
NC
C52
8
0.1UF16V
C52
8
0.1UF16V
C521
0.1UF16V
C521
0.1UF16V
R5
33
4.7K OHM 1/10W
R5
33
4.7K OHM 1/10W
R504
NC
R504
NC
R5
3
6
120 OHM 1/10W
R5
3
6
120 OHM 1/10W
R512
2.2K OHM 1/10W
R512
2.2K OHM 1/10W
1
2
D511
S
C
S
140V
D511
S
C
S
140V
R5
3
2
4.7K OHM 1/10W
R5
3
2
4.7K OHM 1/10W
L501
120 OHM
L501
120 OHM
C527
0.1UF16V
C527
0.1UF16V
R5
3
4
4.7K OHM 1/10W
R5
3
4
4.7K OHM 1/10W
R5
3
5
3
.6K OHM 1/10W
R5
3
5
3
.6K OHM 1/10W
C529
0.1UF16V
C529
0.1UF16V
TMD
S
251 HDMI 2:1
S
WITCH
CEC_B
S
B1
3
S
B1
3
I_177
8
0_05
3
.ep
s
17040
8