19
CDX-CA750/CA750X/CA760X
• IC501 MB90574BPMT-G-323-BND (MAIN SYSTEM CONTROL) (US, Canadian model) (MAIN BOARD)
• IC501 MB90574BPMT-G-335-BND (MAIN SYSTEM CONTROL) (AEP, UK model) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
NCO
O
Not used. (Open)
5
ATT
O
System mute control signal output
6, 7
NCO
O
Not used. (Open)
8
VCC
—
Power supply pin (+5 V)
9
AMP ATT
O
Amp mute signal output
10
E2PSIO
I/O
EEPROM data signal input/output
11
E2PCKO
O
EEPROM clock signal output
12
DOOR SW/FLS SI
I
Door switch signal input (L: close) Flash write data signal input
13
FLS SO
O
Flash write data signal output
14
BUS ON
O
BUS ON control signal output
15
BEEP
O
Beep signal output
16
NS MASK
O
Tuner mute signal output
17
UNISI
I
SONY BUS data signal input
18
UNISO
O
SONY BUS data signal output
19
UNICKO
O
SONY BUS clock signal output
20
IFWIDTH
O
Not used. (Open)
21
SWSHIFT
O
Not used. (Open)
22
SYSRST
O
System reset signal output
23
(NCO)
O
Not used. (Open)
24
SIRCS
I
Remote control data signal input
25 – 29
NCO
O
Not used. (open)
30
AMPON
O
Amp on signal output (L: OFF/H: ON)
31
VOLATT
O
Electronic volume mute signal output (L: Mute on)
32
NCO
O
Not used. (Open)
33
VSS
—
Ground pin
34
C
—
Power stabilized capacitance pin Not used. (open)
35 – 37
NCO
O
Not used. (Open)
38
DVCC
—
D/A converter VREF input
39
DVSS
—
D/A converter GND pin
40, 41
(NCO)
O
Not used. (Open)
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
A/D converter VREF+ input
—
A/D converter VREF– input
—
Analog ground pin
I
Key signal input 0
I
Key signal input 1
I
Rotary commander signal input
O
Not used. (Open)
O
Quality signal output
O
Not used in this set. (Open)
O
MPTH signal output to RDS decoder
I
S-meter signal input
54
VCC
—
Power supply pin (+5 V)
55, 56
NCO
O
Not used. (Open)
57
BOOT
O
Display microcomputer write control signal output
58
DOORIND
O
Front panel indicator signal output
59 – 62
NIL
I
Not used. (Connect to ground in this set.)
63
VSS
—
Ground pin
64
NIL
I
Not used. (Connect to ground in this set.)
65
FSW IN
O
Not used. (Open)
66 – 68
NCO
O
Not used. (Open)
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
