Sony STR-DB870 - Page 51

51
STR-DB870/DB1070
Pin No. Pin Name I/O Description
41
M STATUS O
STATUS (M BUS) control signal output to the select switch (IC751)
42
D.POWER O
Power ON/OFF control signal output terminal (digital section power)
43
V.POWER O
Power ON/OFF control signal output terminal (video section power)
44
VSS —
Ground terminal
45, 46
NC I
Not used (fixed at “L” )
47
ERROR I
Error signal input from the audio DSP (IC1601)
48
NC I
Not used (fixed at “L” )
49
SUB.T.PORT O
Sub power transformer (T2) on/off signal output terminal
50
AUDIO SPLIT LED O
LED drive signal output of AUDIO SPLIT indicator (D1801)
51
GND —
Not used (fixed at “L” )
52
MD2 O
MD2 signal output terminal (fixed at “L” )
53
MD1 O
MD1 signal output terminal (fixed at “H” )
54
MD0 O
MD0 signal output terminal (fixed at “H” )
55
RSTX I
System reset signal input from the reset signal generator (IC1702)
56
VCC —
Power supply terminal (+3.3V)
57
X1 O
Main system clock output terminal (16.5MHz)
58
X0 I
Main system clock output terminal (16.5MHz)
59
VSS —
Ground terminal
60
STOP I
AC power check signal input terminal
61
RDS CLK I
RDS serial data transfer clock signal input from the RDS decoder (IC1303)
62
POWER I
Key input terminal I/1 key (S1704) input
63
MBUS TV I
TV (M BUS) signal input from the TV jack (J755) (US, Canadian models only)
64
MBUS DVD I
DVD (M BUS) signal input terminal (US, Canadian models only)
65
MBUS VIDEO I
VIDEO (M BUS) input terminal (US, Canadian models only)
66
SIRCS I
Sircs signal input from the remote control receiver (IC1701) and select switch (IC751)
67
DIR ERROR I
Error signal input from the digital audio interface receiver (IC1408)
68
VCC —
Power supply terminal (+3.3V)
69
XSTATE I
Clock status flag signal input from the digital audio interface receiver (IC1408)
70
DATA0 I
Audio data input from the digital audio interface receiver (IC1408)
71
XMODE O
Reset signal output to the digital audio interface receiver (IC1408) “L”: active
72
CKSEL1 O
System clock select 1 output to the digital audio interface receiver (IC1408)
73
CLK O
Clock signal output to the digital audio interface receiver (IC1408)
74
CE O
Chip enable signal output to the digital audio interface receiver (IC1408)
75 DI O
Data output to the digital audio interface receiver (IC1408)
76
DO I
Data input from the digital audio interface receiver (IC1408)
77
VCC —
Power supply terminal (+3.3V)
78
BST O
Booster control signal output to the audio DSP2 (IC1601)
79
PM2 O
PLL initialize signal output to the audio DSP2 (IC1601)
80
XRST2 O
Reset signal output to the audio DSP2 (IC1601)
81
HACN2 I
Host acknowledge signal input from the audio DSP2(IC1601)
82
HCS2 O
Host chip select signal output to the audio DSP2 (IC1601)
83
GB9 I
Signal input from the audio DSP1 (IC1501)
84
BST1 O
Boot strap signal output to the audio DSP1 (IC1501)
85
HCS1 O
Host chip select signal output to the audio DSP1 (IC1501)
86
A1 IN I
Audio bus input terminal (control A1)
87
A1 OUT O
Audio bus output terminal (control A1)