Akai PDP4273M Service Manual page 17

1
D
GPIO_P33
GPIO_P32
GPIO_P31
GPIO_P30
RP1501
TT_SEL
R1527
D3V3D
1
P2.7
2
P3.0
3
A17_LN
4
C
P3.1
5
P3.2
6
P3.3
7
A15_SRAM
A15_LN
8
A14_SRAM
A14
9
/RD_SRAM
/RD
10
/WR_SRAM
/WR
11
VSSC
12
VSSP
13
P0.5
14
NC
15
A7_SRAM
A7
16
SCL_NVRAM
SCL_NVRAM
17
SDA_NVRAM
SDA_NVRAM
18
P0.2
19
NC
20
NC
21
VPE
22
P0.3
23
A6_SRAM
A6
24
P0.4
25
P3.7
B
SGND
C1503
TV_CVBS_M#
C1502
TV_CVBS_S#
C1514
A
SGND
1
2 3
R1514
SDA_S3V
R1515
SCL_S3V
RP1502
C1512
C1513
R1513
D3V3D
C1511
R1505
75
VDDP
74
NC
73
RESET
72
/RESET
71
XTALOUT
XTALOUT
70 C1504
XTALIN
XTALIN
69
OSCGND
68
NC
67
A8_SRAM
A8
U1501 66
A9_SRAM
A9
65
A10_SRAM
A10
64
A11_SRAM
A11
63
VDDC D3V3D
62
VSSC
61
NC
60
VSSP
59
P3.6
58
NC
57
NC
56
NC
55
VSYNC TT_VVVS
54
P3.5
53
HSYNC TT_VVHS
52
VDS TT_FSO
51
RAMBANK0
R1528
R1529
C1519
D3V3_TT_A
C1510
SGND
SGND
R1510
TT_R
R1511
TT_G
R1512
TT_B
SGND
2 3
4
D3V3D
U1502
29 9
D7_SRAM
I/O8 A17
28 10
D6_SRAM
I/O7 A16
27 7 RP1503
D5_SRAM
I/O6 A15
26 11
D4_SRAM
I/O5 A14
SDA_S3V 25 4
D3_SRAM
I/O4 A13
23 12
D2_SRAM
I/O3 A12
SCL_S3V 22 1 RP1504
D1_SRAM
I/O2 A11
21 31
D0_SRAM
I/O1 A10
2
A9
R1506
5 3
/WR_SRAM
/WE A8
13 RP1505
A7
30 14
/CE1 A6
3450_rest D3V3D 15
A5
6 16
CE2 A4
17 RP1506
R1507 A3
32 18
/RD_SRAM
/OE A2
19
A1
20
A0
X1501
C1505
U1503
5 4
SDA_NVRAM
SDA GND
SC1_SW1
6 3
SCL_NVRAM
SCL NC2
7 2
WP NC1
D3V3D
8 1
VCC NC0
SC2_SW1
D3V3D
C1506 C1507 C1508
4
15／72
5
A17_SRAM
A16_SRAM
A15_SRAM
A14_SRAM
A13_SRAM
A12_SRAM
A11_SRAM
A10_SRAM
A9_SRAM
A8_SRAM
A7_SRAM
A6_SRAM
A5_SRAM
A4_SRAM
A3_SRAM
A2_SRAM
R1508
A1_SRAM
R1509
A0_SRAM
D3V3D D3V3D
R1516 R1519
SC1_SW0
Q1501 Q1502
D1501
R1517 R1520
SC2_SW
D3V3D D3V3D
R1522 R1525
SC2_SW0
Q1503 Q1504
R1523 D1503 R1526
Title
15_TELETEXT_DECODER
Size Number
B
Date: 14-Oct-2005 Sheet of
File: F:\4228\4228_temp_ddb\4228_Temp.DDB Drawn By:
5
6
D
C
D1502
SC1_SW
B
D1504
A
Revision
6