Read Sony CDX-2180 Service Manual online
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4-1. IC PIN DESCRIPTION
• IC801
µ
PD17705GC-526-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
SIRCS
I
SIRCS input (A/D)
2
IN-SW
I
CD mechanism position detection
3
D-SW
I
CD mechanism position detection
4
SELF-SW
I
CD mechanism position detection
5
L-SW
I
LIMIT switch
6
LM-EJ
O
Loading motor control (Eject direction)
7
LM-LOD
O
Loading motor control (Loading direction)
8
ANT-ON
O
Power control for amplifier.
9
MONO
O
Force MONO output
10
SD
I
SD signal input
11
BAND-SW
I
Band plan setting of general area.
12
AREA1-SW
I
Destination select 1
13
AREA2-SW
I
Destination select 2
14, 15
RE1, 2
I
Rotary encoder input 1, 2
16
SEEK/SEEK
O
SEEK output
17 – 20
NC
—
Not used.
21
GND3
—
GND
22 – 24
KEYIN3 – 1
I
A/D key input 3 – 1
25
ROT-IN
I
Rotary commander input
26
S-METER
I
FM and AM common signal meter A/D conversion input
27
TEST-SW
I
TEST mode select input
28
AM-IFC
I
AM center frequency input
29
FM-IFC
I
FM center frequency input
30
VDD2
—
Power supply (+5 V)
31
VCOH-FM
I
Local oscillation frequency input (FM)
32
VCOL-AM
I
Local oscillation frequency input (AM)
33
GND2
—
GND
34
NC
—
Not used.
35
EO1-PDOUT
O
Error out output
36
TESTO
—
Fixed at “L”.
37
AM-ON(TU-ON)
O
AM power output (AM select)
38
FM-ON(FM/AM)
O
FM power output (FM select)
39
LCL/DX
O
LOCAL/DX select (“H” : LOCAL, “L” : DX)
40
BEEP
O
BEEP output
41
ACC-IN
I
Accessory input
42
SCOR
I
SUBQ data read request
43
MUTE
O
System mute output
44
AMP-MUTE
O
Power amplifier mute output
45
TEL-MUTE
O
Telephone mute output
46
PH2
—
Fixed at “H” in this set.
47
VOL-CE
O
Electric volume chip select
48
VOL-CLK
O
Electric volume serial clock
49
VOL-DATA
O
Electric volume serial data
50
EMPHO
O
De-emphasis control output
51
PW-ON
O
System power control
52
MD-ON
O
Loading motor power
53
CD-ON
O
Servo drive power
54
ILL-ON
O
Illumination output
55, 56
MOD1, 2
O
Bus boost control 1, 2
57
PH3
—
Fixed at “H” in this set.
58
LCD-CE
O
LCD drive chip select output
SECTION 4
DIAGRAMS
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