Read Sony HCD-SR1 / HCD-SR2 / HCD-SR3 (serv.man2) Service Manual online
46
HCD-SR1/SR2/SR3
Pin No.
Pin Name
I/O
Description
117 to 120
WAD4 to WAD7
I
External A/D data input terminal for PSP physical disc mark detection Not used
121
VDCB2
—
Power supply terminal (+2.5V) (for core)
122
WRFD
I
Not used
123
WCK
I
Operation clock signal input for PSP physical disc mark detection from the DVD
decoder
124, 125
WAVDD0, WAVDD1
—
A/D power supply terminal (+2.5V) (for PSP physical disc mark detection)
126
WARFI
I
Analog RF signal input for PSP physical disc mark detection from the DVD/CD
RF amplifier
127
WAVRB
I
A/D bottom reference terminal for PSP physical disc mark detection
128, 129
WAVSS0, WAVSS1
—
A/D ground terminal (for PSP physical disc mark detection)
130
VSIO
—
Ground terminal (for I/O)
131 to 134
DQ7 to DQ4
I/O
Two-way data bus with the SD-RAM
135
VDIOA2
—
Power supply terminal (+3.3V) (for I/O)
136 to 139
DQ3 to DQ0
I/O
Two-way data bus with the SD-RAM
140
VSIOA3
—
Ground terminal (for I/O)
141
DCLK
O
Clock signal output to the SD-RAM
142
DCKE
O
Clock enable signal output to the SD-RAM
143
XWE
O
Write enable signal output to the SD-RAM
144
XCAS
O
Column address strobe signal output to the SD-RAM
145
XRAS
O
Row address strobe signal output to the SD-RAM
146
VDIOA3
—
Power supply terminal (+3.3V) (for I/O)
147
NC
O
Not used
148, 149
A11, A10
O
Address signal output to the SD-RAM
150
VSCA3
—
Ground terminal (for core)
151, 152
A9, A8
O
Address signal output to the SD-RAM
153
VDCA3
—
Power supply terminal (+2.5V) (for core)
154 to 157
A7 to A4
O
Address signal output to the SD-RAM
158
VSIOA4
—
Ground terminal (for I/O)
159 to 162
A3 to A0
O
Address signal output to the SD-RAM
163
VDIOA4
—
Power supply terminal (+3.3V) (for I/O)
164
XSRQ
O
Serial data request signal output to the DVD decoder
165
XSHD
I
Header flag signal input from the DVD decoder
166
SDCK
I
Serial data transfer clock signal input from the DVD decoder
167
XSAK
I
Serial data effect flag signal input from the DVD decoder
168
SDEF
I
Error flag signal input from the DVD decoder
169 to 176
SD0 to SD7
I
Stream data signal input from the DVD decoder
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