Sony CFD-S01 Service Manual page 36

CFD-S01
• IC801 µPD78947GC-A49-8BT-A (SYSTEM CONTROL) (MAIN BOARD (3/4))
Pin No. Pin Name
1, 2 NC
3 to 5 VLC2 to 0
6 to 9 COM1 to 4
10 to 26 S1 to 17
27 TAPE REC
28 NC
29 DOOR SW
30 NC
31 SIMUKE1
32 SIMUKE2
33 SIMUKE3
34 NC
35 A-MUTE
36 FUNC CD
37 FUNC TC
38 AVDD
39 BATT-CHK-H
40 BATT-CHK-M
41 6V-CHK
42 3V-CHK
43 to 45 KEY3 to 1
46 NC
47 AGND
48 RMC IN
49 TC-PLAY
50 WP/INI
51 CD-SUBSYQ
52 CD-BUSY
53 CD-DOUT
54 CD-DIN
55 CD-MCK
56 TU-COUNT
57 TU-DATA
58 TU-CLK
59 TU-CE
60 MIC DET
61 TU-ON
62 CD-R/W
63 CD-LIM_SW
64 CD-RESETX
65 P-CON
66 ISS1
67 ISS2
68 M-BASS
69 ICO
70 XT1
71 XT2
72 VDD
73 VSS
36
I/O
I Not used. (Open)
O LCD drive bias voltage input
O LCD drive common output
I LCD drive segment output
I Tape record signal input
I Not used. (Pull down)
I CD door open/close switch input
O Not used (Open)
I Model discrimination input
I Model discrimination input
I Model discrimination input
O Not used (Open)
O Audio mute output
O CD power control signal output
O Tape function output
— Power supply (+3.3 V)
I Battery voltage check input
I Battery voltage check input (Not used (Pull down))
I Power supply 6V check signal input
I Power supply CD 3.3V check signal input
I Key input
I Not used (Pull down)
I Ground
I Remote commander receiver data input (Not used)
I Tape play switch input
I Wake-up/Interrupt signal input
I CD sub code synchronous signal input
I CD BUSY signal input
I CD command data input
O CD status and SUB-Q data output
O CD command transfer clock output
I Tuner PLL serial data input
O Tuner PLL serial data output
O Tuner PLL serial transfer clock output
O Tuner PLL chip enable signal output
I Not used (Pull down)
O Not used (Open)
O CD command read/write signal output
I CD optical inner limit signal input
O CD system reset output
O System power control output
O Not used (Open)
O Not used (Open)
O MEGA BASS control signal output
I Not used (Pull down)
I Sub system oscillation input (32.768 kHz)
O Sub system oscillation output (32.768 kHz)
— Power supply (+3.3 V)
— Ground
Pin Description
H: REC
L: Close
H: Mute
H: CD ON
H: Tape
L: Tape play
H: Power on
H: MEGA BASS on