Ic Pin Function - Sony HCD-G101 Service Manual

5-10. IC PIN FUNCTION

• IC601 System Controller, LCD driver (µPD753017AGC)
Pin No. Pin Name I/O
Segment output to LCD.
1 to 12 S12 to S23 O
Key control signal output A "H" : active
13 KO A O
O Key control signal output B "H" : active
14 KO B
O Key control signal output C "H" : active
15 KO C
Turned detection signal from tuner
16 TUNED I
O Latch output to LED driver "H" : active (Not used)
17 LATCH OUT
O REC/PB select signal output to tape selector
18 TAPE REC OUT
Tuner mute control signal output
19 TU MUTE OUT O
— Not used
20 —
O LCD drive signal output
21 to 24 COM 1 to COM 3
25 BIAS O
Not used
O
26 to 28 VLC 0 to VLC 2
I Key input 0 " H" : active
29 KI 0
Key input 1 " H" : active
30 KI 1 I
Key input 2 " H" : active
I
31 KI 2
I Key input 3 " H" : active
32 KI 3
— Ground
33 VSS
Key input 4 " H": active
34 KI 4 I
I Key input 5 " H" : active (Not used)
35 KI 5
I CD SYNCHRO REC signal input "L" : active
36 SYC. REC IN
FOK signal input from CXD2508
37 FOK I
I COUNT signal input from CXD2508
38 COUNT
I/O SQCK/CLOK/MODE SW signal input/output
39 SQCK/MODE SW IN
Serial data output
40 DATA O
I Serial data input from CXD2508
41 SQSO
I Remote control signal input "L" : active
42 REM. IN
SCOR signal input from CXD2508
43 SCOR I
SENS signal input from CXD2508
I
44 SENS
I Optical pick-up down detection signal input "L" : down
45 GFS
I Detection signal input of turn table position
46 DISC COUNT SW
Detection signal input of turn table operation
I
47 TURN TABLE SW
I Disc tray open detection signal input
48 TRAY OPEN SW
I Disc tray close detection signal input
49 TRAY CLOSE SW
50 VR UP I/O
Volume encoder signal input and volume motor control signal output (Not used)
I/O
51 VR DOWN
O System mute control signal output "H" : ON
52 SYSTEM MUTE OUT
Power ON/OFF control signal output "H" : OFF, "L" : ON
53 POWER OUT O
— +5V power supply
54 VDD
I Power down detect input "L" : active
55 POWER DOWN IN
Not used
56 OPEN —
• Abbreviation
LCD: Liquid Crystal Display
Function
— 54 —
Pin No. Pin Name I/O
+5V power supply
57
VDD —
58
X1 —
System clock (4.19 MHz)
59
X2 —
60 Latch signal output to CXD2508
XLAT O
61 FM stereo detection signal input
FM ST IN I
62 Optical pick-up up detection signal input
DI 2 I
63 Serial data input
DI 1 I
64 Serial data output
DO O
65 Serial clock output
CLK O
66 Chip enable output
CE O
67 STB signal output
STB O
68 Reset input "L" : reset
RESET I
69 to 80 Segment output to LCD
S00 to S11 O
— 55 —
Function