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Pin No.
Pin Name
I/O
Description
51~54
S20~S23
-
LCD segment output. (not used)
55
O-CD LED
O
LED ON/OFF control output for CD functions.
56
O-TU LED
O
LED ON/OFF control output for TUNER functions.
57
O-TA LED
O
LED ON/OFF control output for TAPE function. (not used)
58
O-ROCK LED
O
LED ON/OFF control output for ROCK.
59
O-POP LED
O
LED ON/OFF control output for POP.
60
O-JAZZ LED
O
LED ON/OFF control output for JAZZ.
61
V3
-
Not used.
62
I-CD TEST
-
Not used.
63
I-TU TEST
-
Not used.
64~66
COM0~COM2
O
LCD common output.
67
COM3
-
LCD common output. (Not used)
68
VSS2
-
Connected to GND.
69
VDD2
-
Power supply.
70
O-CD ON
O
CD POWER control output.
71
O-TU ON
O
TUNER POWER control output.
72
O-P.CONT
O
Power supply control output.
73
P03
-
Not used.
74
O-MUTE
O
Main mute output.
75
O-FM MONO
-
Not used.
76
O-BEAT CONT
O
BEAT switch over output.
77
O-QSOUND
-
QSOUND ON/OFF output.
78
O-COIN
O
CD command output.
79
I-SQOUT
I
CD sub-code Q input.
80
O-CQCK
O
CLK for CD commands/sub-codes.
Summary of Contents for CSD-FD73 HC
Page 8: ...8 LCD DISPLAY LCD HLC7365 ZCH 4...
Page 10: ...10 SCHEMATIC DIAGRAM 1 MAIN CD 1 2 H P KEY BATT1 BATT2 SP...
Page 11: ...11 SCHEMATIC DIAGRAM 2 CD 2 2...
Page 13: ...13 SCHEMATIC DIAGRAM 3 FRONT...
Page 15: ...15 SCHEMATIC DIAGRAM 4 TUNER...
Page 18: ...18 IC BLOCK DIAGRAM...
Page 19: ...19...
