Sony HCD-C770 - Page 101

101
HCD-C770/C990
Pin No. Pin Name I/O Description
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, WAVSS
1
—
A/D ground terminal (for PSP physical disc mark detection)
130 VSIO —
Ground terminal (for I/O)
131 to 13
4
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 13
9
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 16
2
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 17
6
SD0 to SD7 I
Stream data signal input from the DVD decoder