Read Sony DVP-LS755P Service Manual online
5-2
Pin No.
Pin Name
I/O
Function
68
XDACS
O
Audio DAC (2ch) chip select signal output
69
IFSDI
I
Serial data input from the IF CON
70
INT0
I
Microcontroller Interrupt input (Not used)
71
IR
I
IR control signal input (Not used)
72
DVDD2
—
Power supply (+2.5V)
73
RDX
I
Serial bus (data input)
74
TXD
O
Serial bus (data output)
75
UWR
I/O
Microcontroller write strobe (Not used)
76
URD
I/O
Microcontroller read strobe (Not used)
77
DVSS
—
Ground
78 to 81
RD7 to RD4
I/O
SDRAM Data bus RD7 to RD4
82
DVDD2
—
Power supply (+2.5V)
83 to 86
RD3 to RD0
I/O
SDRAM Data bus RD3 to RD0
87
RWE
O
SDRAM write enable signal output
88
CAS
O
SDRAM column address strobe signal output
89
RAS
O
SDRAM row address strobe signal output
90
RCS
O
SDRAM chip select signal output
91
BA0
O
SDRAM bank select 0 signal output
92
DVSS
—
Ground
93 to 96
RD15 to RD12
I/O
SDRAM Data bus RD15 to RD12
97
DVDD3
—
Power supply (+3.3V)
98 to 101
RD11 to RD8
I/O
SDRAM Data bus RD11 to RD8
102
DVSS
—
Ground
103
CLK
O
SDRAM Clock output
104
CLE
O
SDRAM Clock enable output
105 to
107
RA11, RA9 and
RA8
O
SDRAM Address bus RA11, RA9 and RA8
108
DMVDD3
—
Power supply (+3.3V)
109
DMVSS
—
Ground
110
RA7
O
Address bus RA7
111
DVDD3
—
Power supply (+3.3V)
112 to
114
RA6 to RA4
O
Address bus RA6 to RA4
115
DVSS
—
Ground
116
DQM1
O
SDRAM Byte read /write mask signal 1 output
117
DQM0
O
SDRAM Byte read /write mask signal 0 output
118
BA1
O
SDRAM bank select 1 signal output
119
RA10
O
Address bus RA10
120
DVDD2
—
Power supply (+2.5V)
121 to
124
RA0 to RA3
O
Address bus RA0 to RA3
125
DVSS
—
Ground
126 to
129
RD31 to RD28
I/O
Data bus RD31 to RD28 (Not used)
130
DVDD3
—
Power supply (+3.3V)
131 to
134
RD27 to RD24
I/O
Data bus RD27 to RD24 (Not used)
135
DVSS
—
Ground
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