Read Sony CDX-2160 / EXCD-206 Service Manual online
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4-6. IC PIN DESCRIPTION
• IC700 µPD17017GF-B23-3B9 (SYSTEM CONTROL)
• IC700 µPD17017GF-B23-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
CD SO/VOL DATA
O
CD serial data/electric volume serial data output pin
2
VOL CLK
O
Electric volume serial clock output pin
3
SENSE
I
CD sens signal input pin
4
MONO
O
Force monaural signal output pin
5
ACC
I
Accessory power (ACC) voltage detection pin
6
FOK
I
Focus OK signal input pin
7
CD-LAT
O
CD latch signal output pin
8
SQCKO
O
Sub code Q data read clock output pin
9
CD RST
O
CD reset signal output pin
10
SQ SI
I
Sub code Q data input pin
11
NC
—
Not used. (Connect to GND.)
12
SCOR
I
Sub code sync detection signal input pin
13
BUIN
I
Power for operation (BATT) voltage detection pin
14
CDMON
O
Mechanism deck section power supply control pin
15
ILL ON
O
Illumination power supply control pin
16
LD ON
O
Laser power ON/OFF control pin
17
FM/AM
O
FM/AM select pin
18
SEEKOUT
O
SEEK OUT signal output pin
19
PW-ON
O
System power supply control pin
20
LCL/DX
O
LOCAL/DX select pin
21
BEEP
O
Beep sound output pin
22
VOL CE
O
Electric volume serial chip enable output pin
23
LM EJ
O
Loading motor control pin (Eject direction)
24
LM LOD
O
Loading motor control pin (Loading direction)
25
MUTE
O
Audio mute signal output pin
26
FM IF
I
FM IF counter input pin
27
AM IF
I
AM IF counter input pin
28
NOSE SW
I
Front panel with/without detection input pin
29
SD/ST
I
During SEEK operation, station detection input pin.
30
VDD1
—
Power supply pin
31
VCOL
I
AM OSC signal input pin
32
VCOH
I
FM OSC signal input pin
33
GND
—
GND
34
XOUT
O
System clock output pin (4.5 MHz)
35
XIN
I
System clock input pin (4.5 MHz)
36
EO0
O
Charge pump output pin
37
EO1
—
Not used.
38
NC
—
Not used. (Fixed at “H”.)
39, 40
NC
—
Not used.
41
VDD2
—
Power supply pin
42
EMPH.O
O
De-emphasis control pin
43, 44
COM1, COM0
O
LCD common signal output pin
45
LCD29
—
Not used.
46 – 64
LCD28 – LCD10
O
LCD segment signal output pin
65
TEST SW(LCD9)
I/O
Test mode direct settig input/LCD segment signal output pin
66
BAND SW(LCD8)
I/O
Band select input/LCD segment signal output pin
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