Sony STR-DB870 Service Manual

46
STR-DB870/DB1070
Pin No. Pin Name I/O Description
49
WMD0 I
External memory wait mode setting terminal (fixed at “H”)
50
PAGE2 O
External memory page select signal output terminal Not used (open)
51
VSS —
Ground terminal
52, 53
PAGE1, PAGE0 O
External memory page select signal output terminal Not used (open)
54
BOOT I
Boot mode control signal input terminal Not used (fixed at “L”)
55
BTACT O
Boot mode display signal output terminal Not used (open)
56
BST I
Boot strap signal input from the system contorller (IC1703)
57
MOD1 I
Mode select signal input terminal “L”: 384fs, “H”: 256fs
58
MOD0 I
Mode select signal input terminal “L”: single chip mode, “H”: can not use
59
EXLOCK I
Error lock signal input from the digital audio interface receiver (IC1408)
60
VDDI —
Power supply terminal (+2.5V)
61
VSS —
Ground terminal
62, 63
A17, A16 O
Address signal output terminal Not used (open)
64 to 66
A15 to A13 O
Address signal output to the S-RAM (IC1502)
67
GP10 I
Serial clock input from the audio DSP2 (IC1601)
68
GP9 O
Signal output to the system controller (IC1703)
69
GP8 I
Audio transfer signal output to the digital audio inteface receiver (IC1408)
70
VDDI —
Power supply terminal (+2.5V)
71
VSS —
Ground terminal
72 to 75
D15/GP7 to D12/GP4 I/O
Two-way data bus with the S-RAM (IC1502)
76
VDDE —
Power supply terminal (+3.3V)
77 to 80
D11/GP3 to D8/GP0 I/O
Two-way data bus with the S-RAM (IC1502)
81
VSS —
Ground terminal
82 to 85
A9, A12 to A10 O
Address signal output to the S-RAM (IC1502)
86
TDO O
Emulation data output terminal Not used (open)
87
TMS I
Emulation data input start/end select terminal Not used (open)
88
XTRST I
Emulation break signal input terminal Not used (open)
89
TCK I
Emulation clock signal input terminal Not used (open)
90
TDI I
Emulation data input terminal Not used (open)
91
VSS —
Ground terminal
92 to 97
A8 to A3 O
Address signal output to the S-RAM (IC1502)
98, 99
D7, D6 I/O
Two-way data bus with the S-RAM (IC1502)
100
VDDI —
Power supply terminal (+2.5V)
101
VSS —
Ground terminal
102 to 105 D5 to D2 I/O
Two-way data bus with the S-RAM (IC1502)
106
VDDE —
Power supply terminal (+3.3V)
107, 108
D1, D0 I/O
Two-way data bus with the S-RAM (IC1502)
109, 110
A2, A1 O
Address signal output to the S-RAM (IC1502)
111
VSS —
Ground terminal
112
A0 O
Address signal output to the S-RAM (IC1502)
113
PM I
PLL initialize signal input from the system controller (IC1703)
114
SDI3, SDI4 I
Audio serial data input data terminal Not used (open)
116
SYNC I
Sync/unsync select signal input terminal “L”: sync (fixed at “H”)
117 to 119 VSS —
Ground terminal
120
VDDI —
Power supply terminal (+2.5V)

Sony STR-DB870 Specifications

General

Brand	Sony
Model	STR-DB870
Category	Stereo Receiver
Language	English