21
CDX-M850MP
• IC303 M30626FHPGP-054 (SYSTEM CONTROL) (MAIN Board (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
SIRCS
I
Remote control data input
2
FP CTRL
O
Front panel open/close speed control signal
3
CD SO/TSO
O
CD servo serial data output
4
CD SI/TSI
I
CD servo serial data input Not used. (Open)
5
CD CKO/TCKO
O
CD servo serial clock output Not used. (Open)
6
BYTE
I
L fixed terminal
7
CNVSS
I
Flash write-in signal input
8
XIN
I
Sub clock signal input (32kHz)
9
XOUT
O
Sub clock signal output (32kHz)
10
RESET
I
CPU reset signal input
11
OSC OUT
O
Main clock signal output (6MHz)
12
VSS
—
Ground
13
OSC IN
I
Main clock signal input (6MHz)
14
VCC1
—
Power supply pin (+5V)
15
NMI
I
Non maskable interrupt signal input
16
CD PACK
I
CD text pack synchronized signal input
17
DAVN
I
RDS data acquisition detect signal
18
BU IN
I
Back-up power detect signal
19
NS MASK
O
Noise mask signal output
20
BEEP
O
Beep signal output
21
FLW IN
I
OSC frequency shift signal for DC/DC conv. Not used. (Open)
22
NCO
O
Not used. (Open)
23
SA CLK
O
Spectrum analyzer clock signal output
24
TEL ATT
I
telephone mute detect signal input
25
ATT
O
Mute signal output
26
VOL ATT
O
Electronic volume mute signal output
27
I2C CKO
O
Tuner/E-volume BUS clock output
28
I2C SIO
O
Tuner/E-volume BUS data output
29
UNI SO
O
SONY BUS data output
30
UNI SI
I
SONY BUS data input
31
UNI CKO
O
SONY BUS clock output
32
TUNER ATT
O
Tuner attenuate signal output
33
EESIO
I/O
EEPROM data input/output
34
EECKO
O
EEPROM clock output
35
NCO
O
Not used. (Open)
36
ADSO1
O
Not used. (Open)
37
ADSO2
O
Not used. (Open)
38
NCO
O
Not used. (Open)
39
HOLD
I
Flash write-in signal input
40
AMP DIAG
I
Amplifier diagnosis signal input
41
AMP STB
O
Amplifier strobe signal output
42
AMP ON
O
Not used. (Open)
43
TUNER ON
O
Not used. (Open)
44
WRI/WR
I
Flash write-in signal input
45
CD LIMIT
I
CD limit detect signal input Not used. (Open)
46
CD D SW
I
CD disc SW detect signal input Not used. (Open)
47
CD PH1
I
CD PH1 detect signal input
48
CD INSW/PH2
I
CD IN SW/PH2 detect signal input Not used. (Open)
49
PH3
I
CD PH3 detect signal input Not used. (Open)
50
DST SEL1
I
Destination select signal input
51
DST SEL2
I
Destination select signal input Not used. (Open)
52
CD LM LO
O
CD loading motor control signal output Not used. (Open)
