Sony CDX-V7800X Service Manual page 21

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• IC801 µPD17708GC-618-3B9 (SYSTEM CONTROL)
Pin No.
1
2
3
4
5
6
7
8
9, 10
11
12 AREA1-SW
13 AREA2-SW
14
15
16
17 POWER IC ON
18
19 AMP MUTE
20
21
22
23, 24
25
TE
L 13942296513
26
27
28
29
30
31
32
33
34
35 EO1 PDOUT
36
37, 38
39
40
41
42, 43
44
45
46
47
48
49
50
www
51
52
53
.
54
55
56, 57
http://www.xiaoyu163.com
Pin Name I/O
SIRCS I Wireless remote commander input
SELF SW I Self switch input
DOOR I Front panel open/close detection input
NOSE I Front panel with/without detection input
NC — Not used. (Connect to ground)
SYSRST O Rest output for slave microcomputer IC.
DOOR IN O CD door open/close detection output
MUTE O Mute on/off control output
NC — Not used. (Open)
BAND-SW I Initial setting switch input
I Destination check input 1 (Fixed at L in this set)
I Destination check input 2 (Fixed at H in this set)
NC — Not used. (Open)
PARK I Parking signal detection input
TEL MUTE I Attenuator on/off control input
O Power supply control output to power amplifier IC.
SEEK O SEEK output
O Output control to power amplifier IC.
NC — Not used. (Open)
GND3 — Ground
NC — Not used. (Connect to ground)
KEYIN2, 1 I Key input of A/D converter.
ROT-IN I Rotary commander A/D value input
S-METER I S-meter input
TEST-SW I Initial setting switch input (Fixed at H in this set)
AM IFC I AM center frequency counter input
FM IFC I FM center frequency counter input
VDD2 — Power supply pin
VCOH FM I FM input at VCO is FM.
VCOL AM I AM input at VCO is AM.
GND2 — Ground
NC — Not used. (Open)
O Error out output
TEST0 I Fixed at L in this set.
NC — Not used. (Open)
LCL/DX O LOCAL/DX select output
BEEP O Beep output
ACC IN I Accessory input
RE1, 2 I Rotary encoder input 1, 2
NC — Not used. (Open)
MONO O Monaural output (H: Monaural, L: Stereo)
SD I SD input
VOL CE O Chip enable output for Electric volume IC.
VOL CLK O Cloch output for Electric volume IC.
VOL DATA O Data output for Electric volume IC.
NC — Not used. (Open)
FM ON O FM system power control output (H: FM ON)
x ao
AM ON O AM system power control output (H: AM ON)
y
LCD CE O Chip enable output for LCD driver IC.
i
ILL ON O Front panel backlight control output (H: Illumination ON)
NC — Not used. (Connect to ground)
NC — Not used. (Open)
http://www.xiaoyu163.com
8
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3 6 7 1 3
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2 9 9 4 2 8
Pin Description
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
21