Read Sony MEX-1GP Service Manual online
42
MEX-1GP
• IC911 MC38C8001 (CODEC) (KEY BOARD (2/2))
Pin No.
Pin Name
I/O
Pin Description
1 to 8
DA_0 to 7
I/O
SDRAM data input/output
9 to 16
DA_15 to 8
—
Not used (Open)
17
SD_DQM
—
Not used (Open)
18
SD_DQM
O
SDRAM command latch enable signal output
19
VDD_33
—
Power supply (+3.3V)
20
VDD_18
—
Power supply (+1.8V)
21
VSS
—
Ground
22
SD_CASN/ALE
—
Not used (Open)
23
SD_RASN
—
Not used (Open)
24
SD_CSN
O
SDRAM chip enable signal output
25
DS_BA(0)
—
Not used (Open)
26
DS_CLK
O
SDRAM address latch enable signal output
27
SD_CKE
O
SDRAM read enable signal output
28
SD_A(11)
—
Not used (Open)
29 to 32
SD_A(9) to (6)
—
Not used (Open)
33
SD_A(5)
I
DAC zero flag detect signal input
34
SD_A(4)
O
DAC mode control data output
35
SD_A(10)
—
Not used (Open)
36
SD_A(0)
O
DAC mode control clock output
37 to 39
SD_A(1) to (3)
—
Not used (Open)
40
SR_BA(1)
—
Not used (Open)
41
SR_A(11)
O
DAC mode control latch signal output
42 to 45
SR_A(12) to (15)
—
Not used (Open)
46
SR_A(16)
—
Not used (Pull up)
47
SR_A(17)
—
Not used (Pull up)
48
SR_A(18)
—
Not used (Pull down)
49
SR_A(19)
—
Not used (Pull down)
50
SDL_1
—
Not used (Open)
51
SDA_1
—
Not used (Open)
52
VDD_33
—
Power supply (+3.3V)
53
VSS
—
Ground
54
VDD_18
—
Power supply (+1.8V)
55
OSC_16M_OUT
O
Crystal oscillation output (16.9344 MHz)
56
OSC_16M_IN
I
Crystal oscillation input (16.9344 MHz)
57
ADC_VSSA
—
Ground
58
ADC_VDDA
—
Power supply (+3.3V)
59 to 63
ADC_IN (0) to (4)
—
Not used (Connected to ground)
64
VDD_D
—
Power supply (+1.8V)
65
VSS-D
—
Ground
66
PLL-VSSA
—
Ground
67
PLL-VDDA
—
Power supply (+1.8V)
68
USB-VSS
—
Ground
69
PADN
—
Not used (Pull down)
70
PADP
—
Not used (Pull down)
71
USB-VDD
—
Power supply (+3.3V)
72
RTC-VDD
—
Power supply (+1.8V)
73
OSC-32K-OUT
—
Not used (Open)
74
OSC-32K-IN
—
Not used (Connected to ground)
75
RTC-VSS
—
Ground
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