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7-25. IC PIN FUNCTIONS
• IC501 MASTER CONTROL (M306622 MA-A01FP)
Pin No.
Pin Name
I/O
Function
1
STK-MUTE
O
Power amp ON/OFF signal output
2
POWER
O
Power ON/OFF signal output
3
F-RELAY
O
Front speaker relay control output
4
REAR-RELAY
O
Rear speaker relay control output (Not used)
5
CD-POWER
O
CD power on signal output
6
LINE-MUTE
O
Line mute ON/OFF selection output
7
DBFB-H/L
O
DBFB H/L select signal output
8, 9
–
–
Not used
10
XC-IN
I
11
XC-OUT
O
12
RESET
I
Reset signal input
13
X-OUT
O
X’tal (16MHz)
14
VSS
–
Ground
15
X-IN
I
X’tal (16MHz)
16
VCC
–
Power supply (+5V)
17
NMI
I
Not used (PULL UP EVER+5V)
18
WAKE UP
I
WAKE UP (Fixed at fixed at “L”)
19
SCOR
I
Subcode data request signal output
20
RDS-INT
I
21
RDS-DATA
I
22
AC-CUT
I
Back up signal input
23
PL-CLK
O
Clock signal to pro-logic (Not used)
24
PL-DATA
O
Data signal to pro-logic (Not used)
25
PL-LAT
O
Latch signal to pro-logic (Not used)
26
TIMER LED
I
Timer LED ON/OF
27
PROTECTOR
I
Speaker protect ON/OF
28
–
–
Not used
29
IIC-CLK
O
Clock output for IC601
30
IIC-DATA
O
Data output for IC601
31
–
–
Not used
32
SQ-DATA
I
33
SQ-CLK
I
34
SW-MODE
O
Not used
35
CD-DATA
O
CD data output
36
RY-SW
I
Head phone swich detect
37
CD-CLK
O
CD clock output
38
493-LAT
O
Latch signal output for M62493FP (IC101)
ST-BY LED/
CLOCK-OUT
40
L+R/L-R
I
41
BY-PASS
I
42
FL-SW
I
FL switch ON/OFF
43
STBY RELAY
I
Stand by relay ON/OFF
44
BASS FREQ
O
FREQ high/low signal for SYNC bass
45, 46
–
–
Not used
47
493-DATA
O
Data output for M62493FP (IC101)
48
493-CLK
O
Clock output for M62493FP (IC101)
49
ST-MUTE
O
Tuned mute signal output
X’tal (32.768MHz)
RDS data interrupt input
Subcode Q data clock input
39
O
Clock ond stand by LED signal output
Not used
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