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• IC501 MB90574BPMT-G-321-BND (SYSTEM CONTROL) (MAIN BOARD) (US MODEL)
• IC501 MB90574BPMT-G-322-BND (SYSTEM CONTROL) (MAIN BOARD) (AEP, UK, E MODEL)
Pin No.
Pin Name
1 – 3
(NCO)
4
SP LATCH
5
ATT
6
SYS RST
7
(NCO)
8
VCC
9
(NCO)
10
E2P SIO
11
E2P CKO
12
FLS SI
13
FLS SO
14
BUS ON
15
BEEP
16
TEL ATT
17
UNI SI
18
UNI SO
19
UNI CKO
20 – 23
(NCO)
24
SIRCS
25
DSP SI
26
DSP SO
27
DSP CKO
28
DSP PLL
29
DSP MST
30
(NCO)
31
VOL ATT
32
TU ATT
33
VSS
34
C
35
DSP LAT
36
DSP RST
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)
50
QUALITY
51
(NCO)
52
MPTH
53
VSM
54
VCC
55
STBY
56
NS MASK
I/O
O
Not used. (Open)
O
Spectrum analyzer data latch signal
O
System mute signal
O
System reset signal
O
Not used. (Open)
Power supply pin (+5 V)
O
Not used. (Open)
I/O
Tuner unit EEPROM BUS serial data input/output
I/O
Tuner unit EEPROM BUS serial clock input/output
I
Flash CPU write-in data input
O
Flash CPU write-in data output
O
BUS ON signal
O
Beep signal
I
Telephone mute signal
I
SONY BUS serial data input
O
SONY BUS serial data output
O
SONY BUS serial clock output
O
Not used. (Open)
I
Wireless remote data input
I
DSP serial data input
O
DSP serial data output
O
DSP serial clock output
O
DSP PLL clock control signal
O
DSP master/slave control signal
O
Not used. (Open)
O
Electronic volume mute signal
O
Not used. (Open)
Ground
Not used. (Open)
O
DSP latch signal
O
DSP reset signal
O
OSC frequency shift signal for DC/DC conv.
Power supply pin (+5 V)
Ground
O
OPEN/CLOSE motor voltage control signal
O
Not used. (Open)
Power supply pin (+5 V)
Power supply pin (+5 V)
Ground
Ground
I
Key input 0
I
Key input 1
I
Rotary commander input 0
O
Not used. (Open)
I
Noise detection signal
O
Not used. (Open)
I
Tuner multi path detection signal
I
S-meter voltage detection signal
Power supply pin (+5 V)
O
Power amplifier drive signal
O
Noise detection ON/OFF control signal
CDX-M620/M670
Pin Description
29

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