Sony MEX-1GP Service Manual ▷ View online
37
MEX-1GP
61
XFLASH&EJECT_OK
I
Front panel open signal input H: eject
62
OPEN_REQ
O
Front panel open/close request signal output Not used in this set.
63
MECON
O
Mechanism deck power supply control signal output
64
CDON
O
Servo power supply control signal output
65
XUART
I
Sony-Bus/MC-Bus change signal input H: Sony-Bus, L: MC-Bus
66
ZMUTE
O
Zero detection mute signal output
67
MECON_CHK
I
MECHA +6V power rising detection signal input
68
CDON_CHK
I
SERVO +3.3V power rising detection signal input
69 to 74
NC
—
Not used. (Open)
75
RSTX
I
System reset signal input
76
NC
—
Not used. (Open)
77
X1A
—
Sub-clock OUTPUT Not used in this set. (Open)
78
X0A
—
Sub-clock INPUT Not used in this set. (Connect to Vss.)
79
VSS
—
Ground
80
X0
I
Main-clock INPUT (12 MHz)
81
X1
O
Main-clock OUTPUT (12 MHz)
82
VCC
—
Power supply pin (+3.3 V)
83
XWD
I
Not used in this set. (Open)
84
XINIT3
I
Not used in this set. (Open)
85
NC
—
Not used. (Open)
86
XSJIG
I
Not used in this set. (Open)
87 to 89
XINIT0 to 2
I
Not used in this set. (Open)
90 to 96
NC
—
Not used. (Open)
97
XDES
I
Destination setting pin
98
XLINE
I
Not used in this set. (Open)
99, 100
NC
—
Not used. (Open)
Pin No.
Pin Name
I/O
Pin Description
38
MEX-1GP
• IC801 MB90488BPF-G-215E1 (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1
ATT
O
Audio mute signal output
2 to 4
NC
—
Not used (Open)
5
BEEP
O
Beep signal output
6
VOL_ATT
O
Electronic volume ATT control signal output
7
ILL
I
ILL signal input
8 to 10
NC
—
Not used (Open)
11
VSS
—
Ground
12
NC
—
Not used (Open)
13
NSMASK
O
NS mask signal output
14
NC
—
Not used (Open)
15
TU_ATT
O
Tuner mute signal output
16
MA_SL_RST
O
MA-SL reset signal output
17
NC
—
Not used (Open)
18
SL_MA_DAT
I
SL-MA serial data input
19
MA_SL_DAT
O
MA-SL serial data output
20
SL_MA_CLK
I
SL-MA serial transfer clock input
21
RE_0
I
Rotary encoder (Volume) signal input
22
RE_1
I
Rotary encoder (Volume) signal input
23
VCC+3.3
—
Power supply pin (+3.3V)
24
EEP_SIO
I/O
TU-EEPROM serial data input/output
25
EEP_SCK
O
TU-EEPROM serial transfer clock output
26
SA_CLK
O
Spectrum analyzer serial transfer clock output
27
LCD_CE
O
LCD driver chip enable output
28
LCD_SO
O
LCD driver serial data output
29
LCD_SCK
O
LCD driver serial transfer clock output
30
MA_SL_REQ
O
MA-SL request signal output
31
STB
O
Power AMP/RDS power standby signal output
32
AUX
O
Bus audio ON signal output
33
IIC_SCK
O
IIC bus serial clock output
34
IIC_SIO
I/O
IIC bus serial data input/output
35
VCC+3.3
—
A/D converter power supply pin (+3.3V)
36
AVRH+3.3
—
A/D converter reference voltage supply pin (+3.3V)
37
AVSS
—
Ground
38
KEY_IN0
I
Key signal input
39
KEY_IN1
I
Key signal input
40
SA_DATA
I
Spectrum analyzer serial data input
41
RC_IN0
I
Remote control signal input
42
VSS
—
Ground
43
NC
—
Not used (Open)
44
QUALITY
I
Tuner noise level input
45
VSM
I
S-meter signal input
46
DST_SEL
I
Destination setting pin
47
KEY_ACK
I
Key acknowledgment detect signal input
48
NC
—
Not used (Open)
49
MD0
I
Operation mode setting pin
50
MD1
I
Operation mode setting pin
51
MD2
I
Operation mode setting pin
52
NC
—
Not used (Open)
53
BU_IN
I
Back-up power supply detect signal input
39
MEX-1GP
54
TU_ATTIN
I
Tuner mute zero cross detect signal input
55
DAVN
I
RDS data input
56
DIAG
I
Power AMP status signal input
57
NC
—
Not used (Open)
58
UNI_SI
I
Bus control data input
59
UNI_SO
O
Bus control data output
60
UNI_SCK
O
Bus control clock output
61
BUS_ON
O
Bus ON signal output
62
SYS_RST
O
System reset output
63
TEL_ATT
I
Telephone attenuate detect signal input
64
ACC_IN
I
Accessory power supply detect signal input
65
SIRCS
I
Remote control (infrared rays) signal input
66
RAM_BU
—
Not used (Pull down)
67
TEST_IN
I
Test mode detect signal input
68
FLASH_W
I
Memory mode signal input
69
NOSE_SW
I
Front panel detect signal input
70
NC
I
Not used (Open)
71
NC
I
Not used (Open)
72
DOOR_SW
I
Front panel open/close detect signal input
73
DOOR_IND
O
Door indicator on/off signal output
74
RC_IN1
I
Rotary commander shift key signal input
75
XKEY_ON
O
A/D converter power supply control signal output
76
NC
—
Not used (Open)
77
RESET
I
Reset key signal input
78
NC
—
Not used (Open)
79
X1A
I
Sub clock input (32.768kHz)
80
X0A
O
Sub clock output (32.768kHz)
81
VSS
—
Ground
82
X0
I
Main clock input (18.432MHz)
83
X1
O
Main clock output (18.432MHz)
84
VCC+3.3
—
Power supply pin (+3.3V)
85 to 88
NC
—
Not used (Open)
89
Z_MUTE
I
CD zero cross mute detect signal input
90
NCO
—
Not used (Open)
91
DEMO_SEL
—
Not used (Open)
92
NC
—
Not used (Open)
93
NC
—
Not used (Open)
94
CD_ON
I
CD servo power control request signal input
95
CDM_ON
I
CD deck power control request signal input
96
NC
—
Not used (Open)
97
EJECT_OK
O
CD eject OK signal output
98
NC
—
Not used (Open)
99
FP_ATT
O
Mute signal output
100
FMP_SW
O
Tuner/Memory play select signal output
Pin No.
Pin Name
I/O
Pin Description
40
MEX-1GP
• IC902 PL-2518ALQ64 (USB I/F) (KEY BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1
SM_RB
I
SDRAM ready/busy signal input
2
SM_ALE
O
SDRAM address latch enable signal output
3
SUSPEND
O
Suspend indicator output (Not used (Open))
4
SM_CEL
O
SDRAM command latch enable signal output
5
SM_WEB
O
SDRAM write enable signal output
6
SM_REB
O
SDRAM read enable signal output
7
SM_CEB7
—
Not used (Open)
8
SM_CEB6
—
Not used (Open)
9
SM_CEB5
—
Not used (Open)
10
SM_CEB4
—
Not used (Open)
11
VCC3
—
Power supply (+3.3V)
12
SM_CEB3
—
Not used (Open)
13
SM_CEB2
—
Not used (Open)
14
SM_CEB1
—
Not used (Open)
15
SM_CEB0
O
SDRAM chip enable signal output
16
DIO11
I/O
SDRAM data 11 input/output (Not used (Open))
17
DIO0
I/O
SDRAM data 0 input/output
18
GND
—
Ground
19
LED
O
Data access light signal output
20
DIO1
I/O
SDRAM data 1 input/output
21
DIO12
I/O
SDRAM data 12 input/output (Not used (Open))
22
DIO2
I/O
SDRAM data 2 input/output
23
DIO13
I/O
SDRAM data 13 input/output (Not used (Open))
24
DIO3
I/O
SDRAM data 3 input/output
25
VCC25
—
Power supply (+2.5V)
26
WPB
O
SDRAM write protect signal output
27
DIO4
I/O
SDRAM data 4 input/output
28
DIO14
I/O
SDRAM data 14 input/output (Not used (Open))
29
DIO5
I/O
SDRAM data 5 input/output
30
DIO15
I/O
SDRAM data 15 input/output (Not used (Open))
31
DIO6
I/O
SDRAM data 6 input/output
32
VCC3
—
Power supply (+3.3V)
33
WPBIN
I
Connected resister to VCC
34
DIO7
I/O
SDRAM data 7 input/output
35
GND
—
Ground
36
NC
—
Not used (Open)
37
NC
—
Not used (Open)
38
RESETJ
I
Optional external power on reset signal input
39
TEST
—
Not used (Open)
40
VCC25
—
Power supply (+2.5V)
41
GND
—
Ground
42
XSCI
I
Crystal oscillation input (12 MHz)
43
XSCO
O
Crystal oscillation output (12 MHz)
44
AVCC3
—
Power supply (+3.3V)
45
AGND
—
Ground
46
RREF
I
Connected external reference resister to ground
47
DM
I/O
High speed D+ signal input/output
48
DP
I/O
High speed D- signal input/output
49
AGND
—
Ground
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