Sony Ericsson CDX-M620 User Manual
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CDX-M620/M670
• 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
I/O
Pin Description
1 – 3
(NCO)
O
Not used. (Open)
4
SP LATCH
O
Spectrum analyzer data latch signal
5
ATT
O
System mute signal
6
SYS RST
O
System reset signal
7
(NCO)
O
Not used. (Open)
8
VCC
—
Power supply pin (+5 V)
9
(NCO)
O
Not used. (Open)
10
E2P SIO
I/O
Tuner unit EEPROM BUS serial data input/output
11
E2P CKO
I/O
Tuner unit EEPROM BUS serial clock input/output
12
FLS SI
I
Flash CPU write-in data input
13
FLS SO
O
Flash CPU write-in data output
14
BUS ON
O
BUS ON signal
15
BEEP
O
Beep signal
16
TEL ATT
I
Telephone mute signal
17
UNI SI
I
SONY BUS serial data input
18
UNI SO
O
SONY BUS serial data output
19
UNI CKO
O
SONY BUS serial clock output
20 – 23
(NCO)
O
Not used. (Open)
24
SIRCS
I
Wireless remote data input
25
DSP SI
I
DSP serial data input
26
DSP SO
O
DSP serial data output
27
DSP CKO
O
DSP serial clock output
28
DSP PLL
O
DSP PLL clock control signal
29
DSP MST
O
DSP master/slave control signal
30
(NCO)
O
Not used. (Open)
31
VOL ATT
O
Electronic volume mute signal
32
TU ATT
O
Not used. (Open)
33
VSS
—
Ground
34
C
—
Not used. (Open)
35
DSP LAT
O
DSP latch signal
36
DSP RST
O
DSP reset signal
37
SHIFT
O
OSC frequency shift signal for DC/DC conv.
38
DVCC
—
Power supply pin (+5 V)
39
DVSS
—
Ground
40
FP CTRL
O
OPEN/CLOSE motor voltage control signal
41
(NCO)
O
Not used. (Open)
42
AVCC
—
Power supply pin (+5 V)
43
AVRH
—
Power supply pin (+5 V)
44
AVRL
—
Ground
45
AVSS
—
Ground
46
KEY IN0
I
Key input 0
47
KEY IN1
I
Key input 1
48
RC IN0
I
Rotary commander input 0
49
(NCO)
O
Not used. (Open)
50
QUALITY
I
Noise detection signal
51
(NCO)
O
Not used. (Open)
52
MPTH
I
Tuner multi path detection signal
53
VSM
I
S-meter voltage detection signal
54
VCC
—
Power supply pin (+5 V)
55
STBY
O
Power amplifier drive signal
56
NS MASK
O
Noise detection ON/OFF control signal