Pin
No.
Port Description I/O (V)
FM AM CD
68 AF MUTE AF mute control O 4.8 4.8 4.8
69 HUB
CNT
HUB control signal O 4.8 4.8 4.8
70 CH CLK /
SYSID3
CD changer clock /
System upgrade
ID3
I 0 0 0
71 CH DATA CD changer data I 0 0 0
72 SYSID 1 System upgrade
ID1
I 4.8 4.8 4.8
73 CH REM CD changer remote O 0.9 1.2 0
74 SYSID 2 System upgrade
ID2
I 4.8 4.8 4.8
75 AMP CNT Amp power control O 4.8 4.8 4.8
76 LCD DI LCD data O 4.6 4.6 4.6
77 LCD DO LCD data I 4.8 4.8 4.8
78 LCD CLK LCD Clock O 4.7 4.7 4.7
79 ANT CNT Antenna power
control
O 4.8 4.8 0
80
EXT.MUTE
External mute O 4.8 4.8 4.9
10.2. Display Block
IC901 : YEAMLC75884W
Pin
No.
Port Description I/O (V)
1-51 SEG2-40 LCD segment data O 2.4
52-55 COM1-4 LCD common O 2.4
56,57 SEG39,38 Not used - -
58-61 KS3-6 Key scan O 4.8
62-66 Kl1-5 Key data I 0
67 VDD +5V power supply - 4.8
68 VLCD VLCD terminal - 4.8
69 VLCD1 VLCD1 terminal - 3.2
70 VLCD2 VLCD2 terminal - 1.6
71 VSS Ground - 0
72 TEST (Connecting to ground) - 0
73 OSC Oscillator terminal - 3.4
74 RESET Reset I 4.8
75 DO Key data output O 4.8
76 CE LCD driver chip enable I 0
77 CLK LCD clock I 4.6
78 DI LCD data I 4.6
79 P1 (NC) - - -
80 SEG1 LCD segment data O 2.4
10.3. CD Servo Block
10
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