Sony CDX-M800 Service Manual - Page 18

Diagrams, Ic Pin Descriptions - remote control

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CDX-M800 SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTIONS • IC303 M30626FHPGP-052 (US, Canadian model) (SYSTEM CONTROL) (MAIN Board (2/2)) • IC303 M30626FHPGP-053 (AEP, UK, E model) (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 5 CD CKO/TCKO O CD servo serial clock output 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 Not used. (Open) 20 BEEP O Beep signal output 21 FLW IN I OSC frequency shift signal for DC/DC conv. 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 46 CD D SW I CD disc SW detect signal input 47 CD PH1 I CD PH1 detect signal input 48 CD INSW/PH2 I CD IN SW/PH2 detect signal input 49 PH3 I CD PH3 detect signal input 50 DST SEL1 I Destination select signal input 18

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18
CDX-M800
4-1. IC PIN DESCRIPTIONS
• IC303
M30626FHPGP-052 (US, Canadian model) (SYSTEM CONTROL) (MAIN Board (2/2))
• IC303
M30626FHPGP-053 (AEP, UK, E model) (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
5
CD CKO/TCKO
O
CD servo serial clock output
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
Not used. (Open)
20
BEEP
O
Beep signal output
21
FLW IN
I
OSC frequency shift signal for DC/DC conv.
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
46
CD D SW
I
CD disc SW detect signal input
47
CD PH1
I
CD PH1 detect signal input
48
CD INSW/PH2
I
CD IN SW/PH2 detect signal input
49
PH3
I
CD PH3 detect signal input
50
DST SEL1
I
Destination select signal input
SECTION 4
DIAGRAMS