Diagrams; Ic Pin Description - Sony CFD-S36 Service Manual

CFD-S36

6-1. IC PIN DESCRIPTION

• IC802 uPD789477-907 (SYSTEM CONTROLLER)
Pin No. Pin Name
1, 2 NC
3 – 5 VLC2 – 0
6 – 9 COM0 – 3
10 – 26 S0 – 16
27 – 29 S17 – 19
30 BL-CONT
31 A-MUTE
32 WB/FM.AM.TV
33 DBB
34 P-CON
35 AC-CHK
36 CD
37 TAPE
38 AVDD
39 BTT-CHK-H
40 BTT-CHK-M
41 REC
42 – 45 KEY1 – 4
46 MODE CHK
47 AGND
48 REMOTE
49 TC-PLAY
50 WP/INI
51 CD-DOOR
52 C-WRQ
53 C-DOUT
54 C-DIN
55 C-CLK
56 R-COUNT
57 R-DATA
58 R-CLK
59 R-LAT
60 B-MUTE
61 C-DRF
62 C-CE
63 C-FSEQ
64 C-XRT
65 V-LAT
66 V-DATA
67 V-CLK
68 SUR
69 ICO
70 XT1
71 XT2
72 VDD
73 VSS
74 X1
16
SECTION 6

DIAGRAMS

I/O
— Not used. (Open)
O LCD drive voltage output
O LCD drive common output
O LCD drive segment output
O LCD drive segment output
— Not used. (Open)
O Audio mute output H: Mute
O Tuner output level attenuator switch
O MEGA BASS control output
O System power control output
I AC power supply detection signal input "L": AC in
O CD function output H: CD
O Tape function output H: Tape
— Analog power supply pin for A/D converter (+3.3 V)
I Battery check input for Hi-voltage
I Battery check input for Mid-voltage
I Tape record signal input H: REC
I Key input
I Mode set input
— Analog GND for A/D converter
I Sircs receiver data input
I Tape play switch input L: Tape
O Initial set signal output
I CD door open/close switch input L: Close
I CD command data input
I CD sireal data input
O CD sireal data output
I Serial data transfer clock signal input
I Tuner PLL data input
O Tuner PLL data output
O Tuner PLL clock output
O Tuner PLL latch output
O Tuner mute signal output
I CD DRF signal input
O CD SENSE read clock output
I CD frame SYNC input
O CD system reset output
O Volume latch output
O Volume data output
O Volume clock output
O Surround switch signal output
— Connected to GND
I Sub system oscillation input (32.768 kHz)
O Sub system oscillation output (32.768 kHz)
— Main power supply pin for A/D converter (+3.3 V)
— Main GND
I Main system oscillation input (4.19 MHz)
Pin Description
Not used. (Open)
Not used. (Open)
H: MEGA BASS off, L: MEGA BASS on
H: PCON
H: Mute
Not used. (Open)