Sony CFD-S07CP - Page 28

CFD-S07CP
28
• IC Pin Function Description
MAIN BOARD (1/3) IC801 TC94A77FG-717
(CD-RF AMP/SERVO CONTROL, AUDIO DAC, DSP, LCD DRIVER, SYSTEM CONTROL)
Pin No. Pin Name I/O Description
1 FMO O Feed (Sled) servo equalizer signal output
2 DMO O Disc (spindle) servo equalizer signal output
3 KEY1-I I Key signal input
4 KEY2-I I Key signal input
5 CD_LIMIT/LID IN I CD Door open/close and CD Limit switch signal input
6 BATT-CHK-H I Battery voltage power check input
7 6V CHK I 6.2V power check input
8 SIMUKE I Model destination input
9 VREG — 1.5V reference voltage terminal
10 MXO O Sub system oscillation output (4.19MHz)
11 MXI I Sub system oscillation input (4.19MHz)
12 VDD3 — Power supply (VDD+3.3V (I/O))
13 VSS — Ground
14 VSSP3 — Ground (VCO)
15 VCOI I VCO input
16 VDDP3 — Power supply (VDD+3.3V (VCO))
17 FUNC_TC O Tape function select signal output
18 RESET I Initial reset signal input
19 VDD1 — Power supply (VDD+1.5V)
20 VSS — Ground
21 DVSS3 — Ground (DAC)
22 LO O CD audio L-CH signal output
23 DVR I DAC reference voltage terminal
24 RO O CD audio R-CH signal output
25 DVDD3 — Power supply (VDD+3.3V (DAC))
26 XVSS1 — Ground (OSC)
27 XI I Main system oscillation input (16.93MHz)
28 XO O Main system oscillation output (16.93MHz)
29 XVDD1 — Power supply (VDD+1.5V (OSC))
30 RMC I Sircs signal input
31 TU-DAT I/O Tuner serial I2C data input/output
32 TU-CLK O Tuner serial I2C clock output
33 EEP-CLK O EEPROM/EVR control serial I2C clock output
34 EEP-DAT I/O EEPROM/EVR control serial I2C data input/output
35 TU RESET O Tuner reset signal output
36 VSS — Ground
37 VDD1 — Power supply (VDD+1.5V)
38 P-CONT O Power control signal output
39 A-MUTE O Audio mute signal output
40 MOTOR-MUTE O Motor drive mute signal output
41 ISS1 O Tuner beat change signal output
42 ISS2 O Tuner beat change signal output
43 POWER KEY I Power key signal input
44 AUDIO IN CHECK I Audio signal in check signal input
45 TC-OPERATION I Tape play detect signal input (L: Play)
46 TAPE REC I Tape REC signal input (H: REC)
47 to 49 NC — Not used (Open)
50 VDD3 — Power supply (+3.3V)
51 to 54 NC — Not used (Open)
55 D-SHIFT2 O Clock shift signal output
56 D-SHIFT1 O Clock shift signal output
57 ACDC CHK I AC power check signal input
58 NC — Not used (Open)
59 WR O LCD driver data write signal output
60 CS O LCD driver chip select signal output
61 DATA O LCD driver data output