Sony ICF-DVD57TV Service Manual page 66

ICF-DVD57TV
MONITOR BOARD IC1401 µPD789477GC-SR7596B (SUB SYSTEM CONTROLLER)
Pin No. Pin Name
1, 2 NC
3 to 5
VLC2 to VLC0
6 to 9
COM0 to COM3
10 to 25
SEG0 to SEG15
26
TEST_MODE
27 to 29
NC
30
T-AGC
31
T-MUTE
32
T-SDATA
33
T-SCL
34
TV/AUX_MUTE
35 XRESET
36
NC
37 TFT OPEN
38
AVDD
39, 40
AN17, AN16
41 SCP-DET
42 to 45
NC
46
T-AFT
47
AVSS
48 NC
49
EEPROM-SDA
50
EEPROM-SCL
µCOM-LATCH
51
52
VSYNC
53
OSD-CS
54
OSD-DATA
55
OSD-CLK
µCOM-R DATA
56
µCOM-S DATA
57
µCOM-CLK
58
59 8V_SW
60
TFT-ON
61
ZOOM
62
JUST
63, 64 SIDE1, SIDE2
65
HSYNCLOCK
66
SDA
67
SCK
68 NC
69
IC
70
XT1
71
XT2
72 VDD
73
VSS
66
I/O
- Not used
-
Not used
O
Not used
O
Not used
I
Monitor test mode setting terminal "H": test mode on
-
Not used
O
TV AGC on/off control signal output to the TV tuner unit
O
TV muting on/off control signal output to the TV tuner unit "H": muting on
O
Serial data output to the TV tuner unit
O
Serial data transfer clock signal output to the TV tuner unit
O
TV/AUX audio muting on/off control signal output terminal "H": muting on
O Reset signal output to the LCD controller
I
Not used
Monitor open/close detection signal input terminal
I
"L": monitor is opened, "H": monitor is closed
-
Power supply terminal (+3.3V) (for A/D converter)
I
Not used
I Over current detection signal input from the power control
I
Not used
I
TV AFT detection signal input from the TV tuner unit (A/D input)
-
Ground terminal (for A/D converter)
- Not used
I/O
Two-way data bus with the EEPROM
O
Serial data transfer clock signal output to the EEPROM
I
Latch signal input from the main system controller
I
Vertical sync signal input from the RGB decoder
O
Chip select signal output to the OSD driver
O
Serial data output to the OSD driver
O
Serial data transfer clock signal output to the OSD driver
I
Serial data input from the main system controller
O
Serial data output to the main system controller
I
Serial data transfer clock signal input from the main system controller
- 8V power on/off control signal output terminal "H": power on
O
Power on/off control signal output for back light unit "H": power on
O
Screen size selection signal output to the LCD controller "H": zoom screen
O
Screen size selection signal output to the LCD controller "H": wide screen
O Screen size selection signal output to the LCD controller
I
Horizontal sync detection signal input from the RGB decoder
O
Serial data output to the RGB decoder
O
Serial data transfer clock signal output to the RGB decoder
I Not used
I
Connected to the ground
I
System clock input terminal Not used
O
System clock output terminal Not used
- Power supply terminal (+3.3V)
-
Ground terminal
Description