Sony STR-DB870 Service Manual

48
STR-DB870/DB1070
Pin No. Pin Name I/O Description
60, 61
SDO1, SDO2 O
Audio serial data output to the D/A converter (IC1201)
62
KFSIO I/O
Audio clock signal (384fs/256fs) in/out terminal
63
LRCKO O
L/R sampling clock signal output to the D/A converter (IC1201, 1202)
64
BCKO O
Bit clock signal output to the D/A converter (IC1201, 1202)
65
VDDI —
Power supply terminal (+2.5V)
66
VSS —
Ground terminal
67, 68
D18, D17 I/O
Two-way data bus with the S-RAM (IC1602)
69, 70
A10, A9 O
Address signal output to the S-RAM (IC1602)
71
CAS O
Column address strobe signal output terminal Not used (open)
72
RAS O
Row address strobe signal output terminal Not used (open)
73
VDDI —
Power supply terminal (+2.5V)
74
HDIN I
Host serial data input from the system contrller (IC1703)
75
HCLK I
Host clock signal input from the system contrller (IC1703)
76
HCS I
Host chip select input from the system contrller (IC1703)
77, 78
A8, A7 O
Address signal output to the S-RAM (IC1602)
79
D16 I/O
Two-way data bus with the S-RAM (IC1602)
80
D15 I/O
Two-way data bus terminal Not used (open)
81 VSS —
Ground terminal
82
HDOUT O
Host serial data input from the system contrller (IC1703)
83
HACN O
Host acknowledge signal output to the system controller (IC1703)
84
CSO O
Chip select signal output to the S-RAM (IC1602)
85
WEO O
Write enable signal output to the S-RAM (IC1602)
86
A6 O
Address signal output to the S-RAM (IC1602)
87 to 89
D14 to D12 I/O
Two-way data bus terminal Not used (open)
90 VDDE —
Power supply terminal (+3.3V)
91
VSS —
Ground terminal
92 to 94
D11 to D9 I/O
Two-way data bus terminal Not used (open)
95
A5 O
Address signal output to the S-RAM (IC1602)
96
VDDI —
Power supply terminal (+2.5V)
97
TCK I
Emulation clock signal input terminal Not used (open)
98 TDI I
Emulation data input terminal Not used (open)
99
TDO O
Emulation data input terminal Not used (open)
100
TMS I
Emulation data input start/end select Not used (open)
101
XTRST I
Emulation break signal input terminal Not used (open)
102
VSS —
Ground terminal
103, 104
D8, D7 I/O
Two-way data bus terminal Not used (open)
105, 106
A4, A3 O
Address signal output to the S-RAM (IC1602)
107, 108
GP10, GP9 —
Not used (open)
109
VDDI —
Power supply terminal (+2.5V)
110
GP8 —
Not used (open)
111
GP7 I
Serial clock signal input terminal
112
GP6 —
Not used (open)
113, 114
A2, A1 O
Address signal output to the S-RAM (IC1602)
115, 116
D6, D5 I/O
Two-way data bus terminal Not used (open)
117
VSS —
Ground terminal
118, 119
GP5, GP4 —
Not used (open)

Sony STR-DB870 Specifications

General

Brand	Sony
Model	STR-DB870
Category	Stereo Receiver
Language	English