HCD-SR1, HCD-SR2, HCD-SR3 (serv.man2) - Sony Audio Service Manual (repair manual). Page 39

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39
HCD-SR1/SR2/SR3
Pin No.
Pin Name
I/O
Description
114
SDI3
I
Rear L-ch and R-ch audio serial data input from the digital audio processor
115
SDI4
I
Audio serial data input terminal    Not used
116
SYNC
I
Synchronous/asychronous selection signal input terminal
“L”: Synchronous, “H”: asynchronous (fixed at “H” in this set)
117 to 119
VSS
Ground terminal
120
VDDI
Power supply terminal (+2.6V)
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