Sony MDX-C670, Service Manual

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3-2. MAIN BOARD IC701
µ
PD78058GC-969-3B9 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Function
1 DSEL1 I A/D input of initial setting for the destination
2 RCINO I A/D input of rotary commander
3 DSPSEL I
Initial Setting of DSP control “H”: DSP control
“L”: No DSP control (Not used in this set) (Connected to the GND)
4 AVSS – Ground pin for A/D converter
5 CONTRAST O Output for LCD view filed angle adjustment D/A output for LCD contrast adjustment
6 LCDCE O Output of LCD chip enable
7 AVREF – D/A conversion reference voltage
8 NCO O Not used (open)
9 LCDSO O Output of LCD serial data
10 LCDCKO O Output of LCD serial clock
11 9005C/D O Not used (open)
12 VOL + I
Input of rotary encoder
13 VOL – I
14 COLOR O Output of illumination color switching control
15 LOCKIN I Input of LOCK “L”: Sound skip
16 UNISI I Input of SONY BUS serial interface data
17 UNISO O Output of SONY BUS serial interface data
18 UNICKI I Input of SONY BUS serial interface clock
19 UNICKO O Output of SONY BUS serial interface clock
20 BUSON O Output of bus ON control “L”: SONY BUS communication is active
21 SYSRST O Output of system reset control “L”: SONY BUS slave micro computer is reset
22 AMPON O Output of power amplifier ON control
23 TUNON O Output of tuner ON control “H”: Active (Not used in this set) (open)
24 FM ON O
Output of FM ON control In FM mode: Active
In AM mode: Inactive (Not used in this set) (open)
25 PW ON O System power ON control “H”: Power ON “L”: Power OFF
26 ILLON O Output of illumination ON control “H”: ON “L”: OFF
27 ILLUMI IN I Input of ILL line detection for auto dimmer control
28 FANMOTOR ON O Fan motor control (Not used in this set) (open)
29 NCO O
30 NCO O
Not used (open)
31 NCO O
32 NCO O
33 GND – Ground
34 NCO O
35 NCO O
36 NCO O
Not used (open)
37 NCO O
38 NCO O
39 NCO O
40 NCO O Not used (connected to the GND)