Aiwa WD-X500M Service Manual page 26

IC DESCRIPTION -1/1 (µPD178078GF-550-3BA) -2/3
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Pin No. Pin Name
42 FM IT
43 VDD PLL
44 FM OSC
45 AM OSC
46 GND PLL
47 EO0
48 EO1
49 IC
50 RESET
51 BATT IN
52 ACC IN
53 RMT IN
54 ST-IND/SD IN
55 RDS MODE
56 ST-BY MUTE
57 POWER CONT
58 BA3834A SPC
59 BEEP
60 BA3834A SEL
TE
61 LED
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62 BAND CONT
63 BBE-1
64 BBE-2
65 POWER MUTE
66 LCD CONT 2
67 LCD CONT 1
68 MAIN MT CONT
69 NC
70 NC
71 MI-3
72 MO-1
73 MO-2
74 MO-3
75 MO-4
76 SPA
77 SPB
78 RE1 IN
79 RE2 IN
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80 CSD S. REQ
81 PACK IN
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82 GND
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I/O
I FM IF count signal input
– Power supply for PLL
I FM local oscillation input
I AM local oscillation input
– Ground for PLL
O Error output from charge pump
– Error output from charge pump
– Connect to ground
I System reset
I Battery detect input
I ACC (Accessory power supply) ON/OFF input
I Remote control input
I Stereo signal detect/SD signal detect input
O Output "H" during RDS AF operation
O Standby/muting control signal output
O Power control signal output
O C-terminal control signal for spectrum analyzer
O Beep output
O BA3834A select signal output
O Security LED blinking output
O FM/AM BAND switching output
O BBE control signal output 1 (Not used)
O BBE control signal output 2 (Not used)
O POWER IC MUTE control
O Contrast control 2
O Contrast control 1
O Main motor control signal
– Not connected
– Not connected
I Diode matrix input for initial setting
O Diode matrix output for initial setting
O Diode matrix output for initial setting
O Diode matrix output for initial setting
O Diode matrix output for initial setting
O A-terminal control signal for spectrum analyzer
O B-terminal control signal for spectrum analyzer
I Rotary encoder signal input 1
I Rotary encoder signal input 2
I CSD S.REQ signal input
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I Cassette insertion detection input
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– GND
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Description
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