– 30 –
1
I-STEREO /
I
During TUNER function, TUNER stereo signal input /
I-DRF
During CD function, CD ASP IC DRF data input.
2
O-FUNC
O
Function IC expand port pull up VCC switch output.
3
I-RDS-DATA /
I/O
During TUNER function, RDS serial data input (not used) /
O-COIN
During CD function, CD DSP IC command in data output.
4
I-TUDO /
I
During TUNER function, TUNER IF count serial data input /
I-SQOUT
During CD function, CD DSP IC sub-code data input.
5
O-MSTB
O
Main IC control serial strobe output.
6
O-CLK
O
IC control serial clock output.
7
O-DATA
O
IC control serial data output.
8
O-FUNC-CE
O
Function IC control chip enable output.
9
O-PLL-CE
O
TUNER PLL IC control chip enable output.
10
O-CKS
O
Micom clock chift control output. "L" = Shift up (Initial "H").
11
RESET
I
Reset input.
12
I-HOLD
I
Power failure overcharge detection input.
13
I-TU-SIG /
I
During TUNER function, TUNER signal level input /
I-MS
During TAPE function, music sensor detection input.
14
VSS1
–
Ground.
15
CF1
I
Oscillator input for system clock (9.43MHz)
16
CF2
O
Oscillator output for system clock (9.43MHz).
17
VDD1
–
Power supply. Basis on A/D input level. Back up VDD.
18
I-CDELV
I
CD evelater position detection input.
19 ~ 20
I-KEY1 ~ I-KEY0
I
Tact key A/D level input.
21
I-CDTRAY
I
CD tray position detection input.
22
I-CDTSW
I
CD mecha switch detetion input.
23
I-ENC1
I
Waveform input for jog rotary encoder.
24
I-ENC0
I
Waveform input for volume rotary encoder.
25
I-LEVEL
I
Audio signal level detection input (For level bar, CD blank skip).
I
CD serial clock input / MIC level detection input. (Not used)
I
Reference signal input for clock.
I
During TUNER function, RDS serial clock input (not used) /
During CD function, CD DSP IC WRQ input.
I
Remote control signal input.
FL grid output.
FL segment output.
46
VDD3
–
Power supply. Connected to VDD4.
47 ~ 50
P33 ~ P30
O
FL segment output.
51
VP
–
Power supply for FL input.
52 ~ 56
P29 ~ P25
O
FL segment output.
57
P24 / MD
O/I
FL segment output / No MD setting switch input (not used).
58
P23 / ECO OFF
O/I
FL segment output / ECO off setting switch input (not used).
IC DESCRIPTION
IC, LC876580W
Pin No.
Pin Name
I/O
Description
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