Aiwa CDC-X927M Service Manual page 38

IC DESCRIPTION -1/3 (µPD178076GF-560-3BA)-2/3
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Pin Name
Pin No.
39 IF REQ
40 GND
41 AM IF
42 FM IF
43 VDD
44 FM OSC
45 AM OSC
46 GND
47 EO 0
48 EO 1
49 IC
50 RESET
51 RDS CLI
52 ACC IN
53 RMT IN
54 ST IN/SD IN
55 NC
56 ST-BY MUTE
TE 57 POWER CONT
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58 RDS DI
59 BEEP
60 NC
61 NC
62 BAND CONT
63 CD ACC CONT
64 RDS MODE
65 POWER MUTE
66 NC(CONT 2
67 NC(CONT 1)
68 MUTE
69 NC
70 NC
71 MI-1
72 MI-2
73 MI-3
74 MO-1
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75 MO-2
76 MO-3
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77 MO-4
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I/O
O Output to request IF count signal.
- Ground
I AM IF count signal input
I FM IF count signal input
- Power supply for PLL
I FM local oscillation input
I AM local oscillation input
- Ground for PLL
- NC
O Error output from charge pump
- NC Pulled down.
I System reset input
I RDS clock input Pulled down when not used.
I ACC(accessory power supply) on/off input
I Remote control input. Pulled up when not used
I Stop pulse input during FM/AM seek.
- NC Pulled down.
O Standby/muting output to power amp
O Unit power control output
I RDS data input. Pulled down when not used.
O Beep output (3kHz, 50ms)
- NC Pulled down.
- NC
O AM/FM power switching output AM: "H", FM: "L"
O Transmits the power on/off status of head unit to changer. Open when not used.
O Outputs "H" during RDS AF operation. Open when not used.
O Muting output to power amp
O LCD DRV power control 2 Open when not used.
O LCD DRV power control 1 Open when not used.
O Audio muting output
- NC Pulled down.
- NC Pulled down.
I Diode matrix input for initial setting
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O Diode matrix output for initial setting y
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Description
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