Diagrams; Ic Pin Descriptions - Sony CDX-M630 Service Manual

CDX-M630

4-1. IC PIN DESCRIPTIONS

• IC801 MB90574CPMT-G-371-BNDE1 (SYSTEM CONTROL) (US, Canadian Model)
• IC801 MB90574CPMT-G-372-BNDE1 (SYSTEM CONTROL) (AEP, UK, E Model)
Pin No. Pin Name
1 CD RESET
2 NCO
3 A0
4 NCO
5 ATT
6 SYSRST
7 STB
8 VCC
9 XTAL EN
10 E2PSIO
11 E2PCKO
12 FLS SI
13 FLS SO
14 BUS ON
15 BEEP
16 TEL ATT
17 UNI SI
18 UNI SO
19 UNI CKO
20 LIMIT
21 PH1
22 DSW
23 IN/PH2
24 SIRCS
25 CD TSI
26 CD TSO
27 CD TCK
28 RF OK
29 TSTB
30 NCO
31 VOL ATT
32 NCO
33 VSS
34 C
35 SELF SW
36 PH3
37 SHIFT
38 DVCC
39 DVSS
40 FP CTRL
41 NCO
42 AVCC
43 AVRH
44 AVRL
45 AVSS
46 KEY IN0
47 KEY IN1
48 RC IN0
49 NCO
22
SECTION 4

DIAGRAMS

I/O
O Servo CPU reset signal output to servo IC (IC1)
O Not used. (Open)
O Servo CPU command/parameter discriminate signal output to servo IC (IC1)
O Not used. (Open)
O System mute control signal output
O System reset signal output to bus interface (IC802)
O Servo CPU data strobe signal output to servo IC (IC1)
— Power supply pin (+5 V)
O Servo CPU crystal oscillator control signal output to servo IC (IC1)
I/O EEPROM data signal input/output with tuner unit (TU601)
O EEPROM clock signal output to tuner unit (TU601)
I Flash write-in data signal input
O Flash write-in data signal output
O BUS ON control signal output to sub system control (IC301)
O Beep signal output
I Telephone mute detect signal input
I SONY BUS data signal input from bus interface (IC802)
O SONY BUS data signal output to bus interface (IC802)
SONY BUS clock signal output to bus interface (IC802)
O
and sub system control (IC301)
I CD limit SW signal input (SW4)
I CD PH1 detect signal input Not used in this set. (Open)
I CD disc SW detect signal input (SW5)
I CD IN SW/PH2 detect signal input (SW6)
I Remote control data signal input from sircs interface (IC803)
I Servo CPU serial data signal input from servo IC (IC1)
O Servo CPU serial data signal output to servo IC (IC1)
O Servo CPU serial clock signal output to servo IC (IC1)
I Servo CPU RFOK signal input from servo IC (IC1)
O Servo CPU CD TEXT strobe signal output to servo IC (IC1)
O Not used. (Open)
O Electronic volume mute signal output to electronic volume (IC305)
O Not used. (Open)
— Ground pin
— Condenser pin for voltage stabilizer
I CD self SW signal input (SW2)
I CD PH3 detect signal input Not used in this set. (Open)
O OSC frequency shift signal output for DC-DC converter (IC901)
— Power supply pin (+5 V)
— Ground pin
O Front panel open/close speed control signal output
O Not used. (Open)
— Power supply pin (+5 V)
— Power supply pin (+5 V)
— Ground pin
— Ground pin
I Key signal input 0
I Key signal input 1
I Rotary commander signal input 0
O Not used. (Open)
Pin Description