Sony HCD-C990 Service Manual - Page 98
Sony HCD-C990 - Compact Audio And Video System Manual
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Page 98 highlights
HCD-C770/C990 Pin No. 167 168 169 170 171 172 to 176 Pin Name XTAL VSS XTA2 XTA1 VDD D0 to D4 I/O Description I 33.8688 MHz clock signal input terminal - Ground terminal (digital system) O System clock output terminal (33.8688 MHz) I System clock input terminal (33.8688 MHz) - Power supply terminal (+3.3V) (digital system) I/O Two-way data bus with the mechanism controller 98
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98
HCD-C770/C990
Pin No.
Pin Name
I/O
Description
167
XTAL
I
33.8688 MHz clock signal input terminal
168
VSS
—
Ground terminal (digital system)
169
XTA2
O
System clock output terminal (33.8688 MHz)
170
XTA1
I
System clock input terminal (33.8688 MHz)
171
VDD
—
Power supply terminal (+3.3V)
(digital system)
172 to 176
D0 to D4
I/O
Two-way data bus with the mechanism controller