Diagrams; Ic Pin Descriptions - Sony CDX-M8800 Service Manual

3-1. IC PIN DESCRIPTIONS

• IC303 M30624MGP-124GP (SYSTEM CONTROL) (MAIN Board (3/4))
Pin No. Pin Name
1 SIRCS
2 FP_CTRL
3 NC
4 NC
5 NC
6 BYTE
7 CNVSS
8 XIN
9 XOUT
10 RESET
11 OSCOUT
12 VSS
13 OSCIN
14 VCC1
15 NMI
16 NC
17 DAVN
18 BU_IN
19 NS_MASK
20 BEEP
21 FLW_IN
22 FLW_OUT
23 SA_CLK
24 TELATT
25 ATT
26 VOLATT
27 I2C_CKO
28 I2C_SIO
29 UNI_SO
30 UNI_SI
31 UNI_CKO
32 TUNERATT
33 EESIO
34 EECKO
35 NC
36 NC
37 NC
38 NC
39 HOLD
40 AMP_DIAG
41 AMP_STB
42 AMP_ON
43 TUNER_ON
44 WRI/WR
45 NC
46 NC
47 NC
48 NC
49 NC
50 DST_SEL1
51 DST_SEL2
SECTION 3

DIAGRAMS

I/O
I Remote control data input
— Not used. (Open)
O Not used. (Open)
I Not used. (Open)
O Not used. (Open)
I L fixed terminal
I Flash write-in signal input
I Sub clock input (32kHz)
O Sub clock output (32kHz)
I CPU reset signal input
O Main clock output (6MHz)
— Ground
I Main clock input (6MHz)
— Power supply pin (+5V)
I Non maskable interrupt signal input
O Not used. (Open)
I RDS data acquisition detect signal input
I Back-up power detect signal input
O RDS NS MASK signal output
O Beep signal output
I OSC frequency shift signal for DC/DC conv.
O OSC frequency shift signal for DC/DC conv.
O Spectrum analyzer clock signal output
I telephone mute detect signal input
O Mute signal output
O Electronic volume mute signal output
O Tuner/E-volume BUS clock output
O Tuner/E-volume BUS data output
O BUS CONTROL data output
I BUS CONTROL data input
O BUS CONTROL clock output
O Tuner mute signal output
I/O EEPROM data input/output
O EEPROM clock output
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
I Flash write-in signal input
I Amplifier diagnosis signal input
O Amplifier strobe signal output
O Not used. (Open)
O Not used. (Open)
I Connected to VCC (+5V)
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
O Not used. (Open)
I Not used. (Open)
I Destination select signal input
I Destination select signal input
CDX-M8800/M8805X
Pin Description
17