Read Sony STR-DE497 Service Manual online
13
STR-DE497
Pin No.
Pin Name
I/O
Pin Description
55
BTACT
O
Not used (Open)
56
BST
I
Boot stop signal input from SYSTEM CONTROL IC
57
MOD1
I
Operation mode signal input (L: 386fs, H: 256fs) (Fixed at H)
58
MOD0
I
Operation mode signal input (L: single chip mode, H: use prohibited) (Fixed at L)
59
EXLOCK
I
Error detection signal input from DIR IC
60
VDDI
I
Power supply pin (+2.6 V)
61
VSS
—
Ground
62, 63
A17, A16
O
Not used (Open)
64 to 66
A15 to A13
O
External memory address signal output for D/A converter IC (SRAM)
67
GP10
O
Connect to LRCKO
68
GP9
O
Decode signal output for SYSTEM CONTROL IC
69
GP8
I
Audio signal input from DIR IC
70
VDDI
I
Power supply pin (+2.6 V)
71
VSS
—
Ground
72 to 75
D15/GP7 to D12/GP4
I/O
External memory data input/output for D/A converter IC (general port)
76
VDDE
I
Power supply pin (+3.3 V)
77 to 80
D11/GP3 to D8/GP0
I/O
External memory data input/output for D/A converter IC (general port)
81
VSS
—
Ground
82
A9
O
External memory address signal output for D/A converter IC (SRAM)
83 to 85
A12 to A10
O
External memory address signal output for D/A converter IC (SRAM)
86
TDO
O
Not used (Open)
87
TMS
I
Not used (Open)
88
XTRST
I
Not used (Open)
89
TCK
I
Not used (Open)
90
TDI
I
Not used (Open)
91
VSS
—
Ground
92 to 97
A8 to A3
O
External memory address signal output for D/A converter IC (SRAM)
98, 99
D7, D6
I/O
External memory data input/output for D/A converter IC (SRAM)
100
VDDI
I
Power supply pin (+2.6 V)
101
VSS
—
Ground
102 to 105
D5 to D2
I/O
External memory data input/output for D/A converter IC (SRAM)
106
VDDE
I
Power supply pin (+3.3 V)
107, 108
D1, D0
I/O
External memory data input/output for D/A converter IC (SRAM)
109, 110
A2, A1
O
External memory address signal output for D/A converter IC (SRAM)
111
VSS
—
Ground
112
A0
O
External memory address signal output for D/A converter IC (SRAM)
113
PM
I
PLL initialization signal input from SYSTEM CONTROL IC
114, 115
SDI3, SDI4
I
Not used (Open)
116
SYNC
I
Sync/async select signal input (L: sync, H: async) (Fixed at H)
117 to 119
VSS
—
Ground
120
VDDI
I
Power supply pin (+2.6 V)
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