Sony CFD-S700, Руководство по обслуживанию

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CFD-S700
6-1. IC Pin Description
• IC802 uPD789477GC-A06-8BT (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Pin Description
1, 2 NC — Not used. (Open)
3 – 5 VLC2 – 0 O LCD drive voltage output
6 – 9 COM0 – 3 O LCD drive common output
10 – 26 S0 – 16 O LCD drive segment output
27 – 29 S17 – 19 O LCD drive segment output Not used. (Open)
30 BL-CONT — Not used. (Open)
31 A-MUTE O Audio mute output H: Mute
32 WB/FM.AM.TV O Tuner output level attenuator switch Not used. (Open)
33 DBB O MEGA BASS control output H: MEGA BASS off, L: MEGA BASS on
34 P-CON O System power control output H: PCON
35 AC-CHK I AC power supply detection signal input “L”: AC in
36 CD O CD function output H: CD
37 TAPE O Tape function output H: Tape
38 AVDD — Analog power supply pin for A/D converter (+3.3 V)
39 BTT-CHK-H I Battery check input for Hi-voltage
40 BTT-CHK-M I Battery check input for Mid-voltage
41 REC I Tape record signal input H: REC
42 – 45 KEY1 – 4 I Key input
46 MODE CHK I Mode set input
47 AGND — Analog GND for A/D converter
48 REMOTE I Sircs receiver data input
49 TC-PLAY I Tape play switch input L: Tape
50 WP/INI O Initial set signal output
51 CD-DOOR I CD door open/close switch input L: Close
52 C-WRQ I CD command data input
53 C-DOUT I CD sireal data input
54 C-DIN O CD sireal data output
55 C-CLK I Serial data transfer clock signal input
56 R-COUNT I Tuner PLL data input
57 R-DATA O Tuner PLL data output
58 R-CLK O Tuner PLL clock output
59 R-LAT O Tuner PLL latch output
60 B-MUTE O Tuner mute signal output H: Mute
61 C-DRF I CD DRF signal input
62 C-CE O CD SENSE read clock output
63 C-FSEQ I CD frame SYNC input
64 C-XRT O CD system reset output
65 V-LAT O Volume latch output Not used. (Open)
66 V-DATA O Volume data output
67 V-CLK O Volume clock output
68 SUR O Surround switch signal output
69 ICO — Connected to GND
70 XT1 I Sub system oscillation input (32.768 kHz)
71 XT2 O Sub system oscillation output (32.768 kHz)
72 VDD — Main power supply pin for A/D converter (+3.3 V)
73 VSS — Main GND
74 X1 I Main system oscillation input (4.19 MHz)
SECTION 6
DIAGRAMS
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