Aiwa XR-M700, Руководство по обслуживанию

Страница: 30 / 46

– 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).
26 I-SC / I-MIC I CD serial clock input / MIC level detection input. (Not used)
27 I-TMBASE I Reference signal input for clock.
28
I-RDS-CLK
I
During TUNER function, RDS serial clock input (not used) /
I-WRQ During CD function, CD DSP IC WRQ input.
29 I-RMC I Remote control signal input.
30 ~ 43 G14 ~ G01 O FL grid output.
44 ~ 45 P35 ~ P334 O 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