Sony CFD-S07CP Service Manual page 28

CFD-S07CP
• 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
1 FMO
2 DMO
3 KEY1-I
4 KEY2-I
5 CD_LIMIT/LID IN
6 BATT-CHK-H
7 6V CHK
8 SIMUKE
9 VREG
10 MXO
11 MXI
12 VDD3
13 VSS
14 VSSP3
15 VCOI
16 VDDP3
17 FUNC_TC
18 RESET
19 VDD1
20 VSS
21 DVSS3
22 LO
23 DVR
24 RO
25 DVDD3
26 XVSS1
27 XI
28 XO
29 XVDD1
30 RMC
31 TU-DAT
32 TU-CLK
33 EEP-CLK
34 EEP-DAT
35 TU RESET
36 VSS
37 VDD1
38 P-CONT
39 A-MUTE
40 MOTOR-MUTE
41 ISS1
42 ISS2
43 POWER KEY
44 AUDIO IN CHECK
45 TC-OPERATION
46 TAPE REC
47 to 49 NC
50 VDD3
51 to 54 NC
55 D-SHIFT2
56 D-SHIFT1
57 ACDC CHK
58 NC
59 WR
60 CS
61 DATA
28
I/O
O Feed (Sled) servo equalizer signal output
O Disc (spindle) servo equalizer signal output
I Key signal input
I Key signal input
I CD Door open/close and CD Limit switch signal input
I Battery voltage power check input
I 6.2V power check input
I Model destination input
— 1.5V reference voltage terminal
O Sub system oscillation output (4.19MHz)
I Sub system oscillation input (4.19MHz)
— Power supply (VDD+3.3V (I/O))
— Ground
— Ground (VCO)
I VCO input
— Power supply (VDD+3.3V (VCO))
O Tape function select signal output
I Initial reset signal input
— Power supply (VDD+1.5V)
— Ground
— Ground (DAC)
O CD audio L-CH signal output
I DAC reference voltage terminal
O CD audio R-CH signal output
— Power supply (VDD+3.3V (DAC))
— Ground (OSC)
I Main system oscillation input (16.93MHz)
O Main system oscillation output (16.93MHz)
— Power supply (VDD+1.5V (OSC))
I Sircs signal input
I/O Tuner serial I2C data input/output
O Tuner serial I2C clock output
O EEPROM/EVR control serial I2C clock output
I/O EEPROM/EVR control serial I2C data input/output
O Tuner reset signal output
— Ground
— Power supply (VDD+1.5V)
O Power control signal output
O Audio mute signal output
O Motor drive mute signal output
O Tuner beat change signal output
O Tuner beat change signal output
I Power key signal input
I Audio signal in check signal input
I Tape play detect signal input (L: Play)
I Tape REC signal input (H: REC)
— Not used (Open)
— Power supply (+3.3V)
— Not used (Open)
O Clock shift signal output
O Clock shift signal output
I AC power check signal input
— Not used (Open)
O LCD driver data write signal output
O LCD driver chip select signal output
O LCD driver data output
Description