Sony STR-DB870 Service Manual

49
STR-DB870/DB1070
Pin No. Pin Name I/O Description
120
GP3 O
Error signal output to the system controller (IC1703)
121
NC —
Not used (open)
122 A0 O
Address signal output to the S-RAM (IC1602)
123 to 125
D4 to D2 I/O
Two-way data bus terminal Not used (open)
126
VDDE —
Power supply terminal (+3.3V)
127
VSS —
Ground terminal
128, 129
D1, D0 I/O
Two-way data bus terminal Not used (open)
130 GP2 —
Not used (open)
131
GP1 I
Clock signal input from the digital audio interface receiver (IC1408)
132
GP0 I
Serial clock signal input terminal
133
SDCLK O
Not used (open)
134
CLKEN O
Not used (open)
135
DQM O
Not used (open)
136
EXLOCK I
External lock signal input from the system controller (IC1703)
137
VDDI —
Power supply terminal (+2.5V)
138
VSS —
Ground terminal
139
MCLK2 O
System clock output terminal (13.5MHz)
140
PM I
PLL initialize signal input from the system controller (IC1703)
141
BST I
Boot strap signal input from the system controller (IC1703)
142
BOOT I
Boot mode control signal input terminal Not used (fixed at “L”)
143
TST I
Not used (fixed at “L”)
144
MCLK1 I
System clock output terminal (13.5MHz)

Sony STR-DB870 Specifications

General

Brand	Sony
Model	STR-DB870
Category	Stereo Receiver
Language	English