Sony DAV-C770 - Compact Av System, Service Manual

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93
HCD-C770/C990
Pin No. Pin Name I/O Description
46
VDDE —
Power supply terminal (+3.3V)
47
WMD1 I
S-RAM wait mode setting terminal Fixed at “H” in this set
48
VSS —
Ground terminal
49
WMD0 I
S-RAM wait mode setting terminal Fixed at “L” in this set
50
PAGE2 O
Page selection signal output terminal Not used
51
VSS —
Ground terminal
52, 53
PAGE1, PAGE0 O
Page selection signal output terminal Not used
54
BOOT I
Boot mode control signal input terminal Not used
55
BTACT O
Boot mode state display signal output terminal Not used
56
BST I
Boot trap signal input from the system controller
57 MOD1 I
PLL input frequency selection signal input terminal
“L”: 384fs, “H”: 256fs (fixed at “H” in this set)
58 MOD0 I Mode setting terminal “L”: single chip mode, “H”: use prohibition (fixed at “L” in this set)
59 EXLOCK I PLL lock error and data error flag input from the digital audio interface IC
60
VDDI —
Power supply terminal (+2.6V)
61
VSS —
Ground terminal
62, 63
A17, A16 O
Address signal output terminal Not used
64 to 66
A15 to A13 O
Address signal output to the S-RAM
67
GP10 O
L/R sampling clock signal (44.1 kHz) output to the D/A converter and stream processor
68
GP9 O
Decode signal output to the system controller
69
GP8 I
Bit 1 input terminal of channel status from the digital audio interface IC
70
VDDI —
Power supply terminal (+2.6V)
71
VSS —
Ground terminal
72 to 75
D15 to D12 I/O
Two-way data bus with the S-RAM
76
VDDE —
Power supply terminal (+3.3V)
77 to 80
D11 to D8 I/O
Two-way data bus with the S-RAM
81
VSS —
Ground terminal
82 to 85
A9, A12 to A10 O
Address signal output to the S-RAM
86
TDO O
Simple emulation data output terminal Not used
87
TMS I
Simple emulation data input start/end detection signal input terminal Not used
88
XTRST I
Simple emulation asychronous break input terminal Not used
89
TCK I
Simple emulation clock signal input terminal Not used
90
TDI I
Simple emulation data input terminal Not used
91
VSS —
Ground terminal
92 to 97
A8 to A3 O
Address signal output to the S-RAM
98, 99
D7, D6 I/O
Two-way data bus with the S-RAM
100
VDDI —
Power supply terminal (+2.6V)
101
VSS —
Ground terminal
102 to 105 D5 to D2 I/O
Two-way data bus with the S-RAM
106 VDDE — Power supply terminal (+3.3V)
107, 108 D1, D0 I/O Two-way data bus with the S-RAM
109, 110 A2, A1 O Address signal output to the S-RAM
111 VSS — Ground terminal
112 A0 O Address signal output to the S-RAM
113 PM I PLL reset signal input from the system controller “L”: reset
114 SDI3 I Rear L-ch and R-ch audio serial data input from the digital audio processor