Sony SCD-XB940 Service Manual page 72

SCD-XB940
Pin No. Pin Name
50 ZDFLGR
51, 52 A0, A1
53 VDD
54 VSS
55 to 63 A2 to A10
64 NC
65 VSS
66 XWE
67 XCAS
68 XRAS
69 XOE
70 to77 DQ0 to DR7
78 VDD
79 VSS
80 WCK
81 WRFD
82 to 89 WAD0 to WAD7
90 VSS
91 to 98 SD7 to SD0
99 SDEF
100 XSAK
22
I/O
O
Data (Rch) flag detect signal output terminal
O
Address signal output to the D-RAM (IC625)
—
Power supply terminal (+3.3V)
— Ground terminal
O
Address signal output to the D-RAM (IC625)
—
Not used (open)
—
Ground terminal
O Write enable signal output to the D-RAM (IC625)
O
Column address strobe signal output to the D-RAM (IC625)
O
Row address strobe signal output to the D-RAM (IC625)
O
Read enable signal output to the D-RAM (IC625)
I/O Two-way data bus with the D-RAM (IC625)
—
Power supply terminal (+3.3V)
—
Ground terminal
I
Clock signal input terminal for disk mark detect
I RF data signal input terminal for disk mark detect
I
A/D data signal input from the A/D converter (IC620) for disk mark detect
—
Ground terminal
I
Stream data signal input from the RF signal decoder (IC622)
I
Error flag signal input from the RF signal decoder (IC622)
I
Data flag signal input from the RF signal decoder (IC622)
Description