Ic Pin Functions - Sony SAVA-7 Service Manual

3-6. IC PIN FUNCTION
• IC151 (SYSTEM CONTROL) CXP82612-027Q
Pin No. Pin Name
1 STOP
2 SIRCS
3 N/C
4 N/C
5 N/C
6 CE1
7 CE2
8 CLK
9 CE3
10 DATA
11 RS
12 R/W
13 E
14 DB0
15 DB1
16 DB2
17 DB3
18 DB4
19 DB5
20 DB6
21 DB7
22 KEY0
23 KEY1
24 MUTE LR
25 MUTE CEN
26 MUTE SUR
27 MUTE SW
28 STANDBY
29 N/C
30 RESET
31 EXTAL
32 XTAL
33 Vss
34 LED (OPERATE)
35 LED (STANDBY)
36 B/L HIGH
37 B/L LOW
38 to 70 N/C
71 GND
72 Vdd
73 GND
74 GND
75 5V
76 N/C
77 N/C
78 N/C
79 CNT EXT
80 SUR EXT
I/O
I STOP detection.
I SIRCS.
— Not used.
— Not used.
— Not used.
O Chip enable for surround IC (LA2786, LV1016) control.
O Chip enable for LR side volume IC (LC75373) control.
O Clock.
O Chip enable for CS side volume IC (LC75373) control.
O Data out.
O Register select signal.
O Read/Write select signal.
O Read/Write startup signal.
O Display data bus.
O Display data bus.
O Display data bus.
O Display data bus.
O Display data bus.
O Display data bus.
O Display data bus.
O Display data bus.
I Key input.
I Key input.
O LR mute.
O Center mute.
O Surround mute.
O Sub-woofer mute.
O Amplifier standby.
— Not used.
I Reset signal.
I Oscillator.
— Oscillator.
— Ground.
O LED (yellow/green) illumination.
O LED (red) illumination.
O Back-light (bright).
O Back-light (dim)
— Not used.
— Not used.
— 5V.
I Not used.
I Not used.
— 5V.
— Not used.
— Not used.
— Not used.
I External center speaker detection.
I External surround speaker detection.
— 17 —
Description