Read Sony STR-DA90ESG Service Manual online
– 21 –
Pin No.
Pin Name
I/O
Function
46
SDO1
O
Audio serial data output terminal (for center side speaker)
47
SDO0
O
Audio serial data output terminal (for front side speaker)
48
SVCC
—
Power supply terminal (+5V) (for serial port)
49
SCKT
O
Bit clock signal (2.8224 MHz) output terminal
50
WST
O
L/R sampling clock signal (44.1 kHz) output terminal
51
SCKR
I
Audio serial data reading clock signal input from the digital signal processor (IC3410)
52
QGND
—
Ground terminal (for internal logic)
53
QVCC
—
Power supply terminal (+5V) (for internal logic)
54
SGND
—
Ground terminal (for serial port)
55
WSR
I
Word transmission input from the digital signal processor (IC3410)
56
SDI1
I
Audio serial data input from the digital signal processor (IC3410)
57
SDI0
I
Audio serial data input from the digital signal processor (IC3410)
58
DSO
O
Debug serial data output terminal Not used (open)
59
DSI
I
Debug serial data input terminal Not used (open)
60
DSCK
I
Debug serial data reading clock signal input terminal Not used (open)
61
DR
I
Debug request signal input terminal Not used (fixed at “H”)
62
MD7
I/O
63
MD6
I/O
64
MD5
I/O
65
MD4
I/O
66
DGND
—
Ground terminal (for data bus buffer)
67
MD3
I/O
68
MD2
I/O
Two-way data bus with the S-RAM (IC3411)
69
MD1
I/O
70
DVCC
—
Power supply terminal (+5V) (for data bus buffer)
71
MD0
I/O
Two-way data bus with the S-RAM (IC3411)
72
DGND
—
Ground terminal (for data bus buffer)
73
GPIO3
I/O
74
GPIO2
I/O
General digital signal processor in/out terminal Not used (open)
75
GPIO1
I/O
76
GPIO0
I/O
General digital signal processor in/out with the master controller (IC3413)
77
MRD
O
Write strobe signal output to the S-RAM (IC3411)
78
MWR
O
Read strobe signal output to the S-RAM (IC3411)
79
CS1
O
Chip select signal output to the external RAM device Not used (open)
80
MA16
O
Address signal output to the S-RAM (IC3411)
Two-way data bus with the S-RAM (IC3411)
Click on the first or last page to see other STR-DA90ESG service manuals if exist.