Sony CDX-M620 / CDX-M670 Service Manual ▷ View online
29
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)
• 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
30
CDX-M620/M670
Pin No.
Pin Name
I/O
Pin Description
57
DDC ON
O
DC/DC converter power control signal
58
CD EJECT OK
O
CD eject control signal
59
CD OPEN REQ
I
Front panel open request signal
60
(NCO)
O
Not used. (Open)
61
OPEN KEY
I
OPEN key detection signal
62
NOSE SW
I
Nose SW detection signal
63
VSS
—
Ground
64
DETACH SW
I
Detach SW detection signal
65
PWM
I
Oscillation frequency count input
66 – 68
(NCO)
O
Not used. (Open)
69
FLASH W
I
Flash write-in signal
70
I2C SIO
I/O
I2C serial data input/output
71
I2C CKO
I/O
I2C serial clock input/output
72
RC IN1
I
Rotary commander input 1
73
X1A
—
Crystal oscillator (32.768 kHz)
74
X0A
—
Crystal oscillator (32.768 kHz)
75
DAVN
I
RDS data acquisition detect signal
76
CDON IN
I
CD mechanism power control signal
77
BU IN
I
Back-up power detection signal
78
DSP READY
I
DSP ready signal
79
KEY ACK
I
Key acknowledge signal
80
AD ON
O
A/D converter power control signal
81
ACC IN
I
Accessory key ON signal
82
FLS PWON
O
Flash power ON control signal
83
PW ON
O
Audio circuit power ON control signal
84
TEST IN
I
Test mode initial setting detection signal
85
RAM BU
I
RAM reset detection signal
86
HSTX
I
Hardware standby input
87
MD2
I
Connecting to ground in this set.
88
MD1
I
Connecting to VCC in this set.
89
MD0
I
Connecting to VCC in this set.
90
RSTX
I
Reset input
91
VSS
—
Ground
92
X0
—
Crystal oscillator (3.68 MHz)
93
X1
—
Crystal oscillator (3.68 MHz)
94
VCC
—
Power supply pin (+5 V)
95
ILL IN
I
Illumination dimmer control signal
96
I DET
I
OPEN/CLOSE motor abnormal current detection
97
MOT –
O
OPEN/CLOSE motor control signal
98
MOT +
O
OPEN/CLOSE motor control signal
99
CLOSE SW
I
Close SW detection signal
100
OPEN SW
I
Open SW detection signal
101
CENT SW
I
Cent SW detection signal
102
(NCO)
O
Not used. (Open)
103
CDMD SEL
I
CD/MD selector signal
104
DEST SEL1
I
Destination selector signal 1
105
DEST SEL2
I
Destination selector signal 2
106
BOOT
O
Display CPU write-in control signal
107
(NCO)
O
Not used. (Open)
108
DSP ON
O
DSP power control signal
109
SENS ON
O
Not used. (Open)
110
EMPH IN
I
Emphasis input
111
PACK IN
I
Pack detection signal
31
CDX-M620/M670
Pin No.
Pin Name
I/O
Pin Description
112
4V SEL
I
4V select control signal
113
(NCO)
O
Not used. (Open)
114
TUN ON
O
Tuner power control signal
115
LED SW1
O
Illumination select control signal 1
116
LED SW2
O
Illumination select control signal 2
117
(NCO)
O
Not used. (Open)
118
(NCO)
O
Not used. (Open)
119
VSS
—
Ground
120
(NCO)
O
Not used. (Open)
32
CDX-M620/M670
• IC702 HD643255A36F (SUB SYSTEM CONTROL) (MAIN BOARD)
Pin No.
Pin Name
I/O
Pin Description
1
SA CLK
O
Not used. (Open)
2
PG4
O
Not used. (Open)
3
VSS
—
Ground
4
NC
—
Not used. (Open)
5
VCC
—
Power supply pin (+ 5V)
6 – 9
PC0 – PC3
O
Not used. (Open)
10
VSS
—
Ground
11 – 14
PC4 – PC7
O
Not used. (Open)
15 – 18
PB0 – PB3
O
Not used. (Open)
19
VSS
—
Ground
20 – 23
PB4 – PB7
O
Not used. (Open)
24 – 27
PA0 – PA3
O
Not used. (Open)
28
VSS
—
Ground
29 – 31
PA4 – PA6
O
Not used. (Open)
32
SA EN IN
I
Connecting to ground in this set.
33
SPE LAT
I
Spectrum analyzer data latch signal
34
BU IN
I
Back-up power detection signal
35, 36
VSS
—
Ground
37
P65
O
Not used. (Open)
38
BUS ON
I
BUS ON signal
39
VCC
—
Power supply pin (+5 V)
40 – 43
PE0 – PE3
O
Not used. (Open)
44
VSS
—
Ground
45
DSP SEL
I
Spectrum analyzer data select signal
46
LED SW1
I
Illumination select control signal 1
47
LED SW2
I
Illumination select control signal 2
48
PE7
O
Not used. (Open)
49
BU IN
O
Not used. (Open)
50
LINK OFF
O
Link OFF control signal
51
PD2
O
Not used. (Open)
52
ILL ON
O
Illumination power control signal
53
VSS
—
Ground
54 – 56
PD4 – PD6
O
Not used. (Open)
57
BOOT
I
Display CPU write-in control signal
58
VCC
—
Power supply pin (+5 V)
59
P30
O
Not used. (Open)
60
LCD SO/TX
O
LCD driver serial data output
61
SP SI
I
Spectrum analyzer data input
62
RX
I
Flash CPU write-in data input
63
SP CKI
I
Spectrum analyzer clock input
64
LCD CKO
O
LCD driver serial clock output
65
VSS
—
Ground
66
LCD CEO
O
LCD driver chip enable output
67, 68
VSS
—
Ground
69
LCD INH
O
LCD driver inhibit control signal
70
LCD CE1
O
LCD driver chip enable output
71
LCD CE2
O
LCD driver chip enable output
72 – 78
P27 – P21
O
Not used. (Open)
79
FL W
O
Flash write control signal
80
FW E
I
Flash write enable signal
81
SYS RST
I
System reset signal
82
NMI
I
Non maskable interrupt signal
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