![background image](http://html.mh-extra.com/html/sony/ss-cm90/ss-cm90_service-manual_1329653093.webp)
92
HCD-M90
•
DVD BOARD IC302 CXD9635R (SERVO DIGITAL SIGNAL PROCESSOR, ARP)
Pin No.
Pin Name
I/O
Description
1
VSS
—
Ground terminal (for digital system)
2 to 9
D0 to D7
I/O
Two-way data bus
10
VDD 3.3V
—
Power supply terminal (+3.3V) (for digital system)
11 to 15
A0 to A4
I
Address signal input from the DVD system controller
16
VSS
—
Ground terminal (for digital system)
17 to 19
A5 to A7
I
Address signal input from the DVD system controller
20
VDD 1.8V
—
Power supply terminal (+1.8V) (for digital system)
21
XINT
O
Interrupt request signal output to the DVD system controller
22
HINT
O
Interrupt request signal output to the DVD system controller
23
XCS
I
Chip select signal input from the DVD system controller
24
HCS
I
Chip select signal input from the DVD system controller
25
XWAT
O
Wait signal output to the DVD system controller
26
VSS
—
Ground terminal (for digital system)
27 to 36
MA0 to MA9
O
Address signal output to the D-RAM
37
VDD 3.3V
—
Power supply terminal (+3.3V) (for digital system)
38
XMWR
O
Write enable signal output to the D-RAM
39
XCAS
O
CAS signal output to the D-RAM
40
VSS
—
Ground terminal (for digital system)
41
XRAS
O
RAS signal output to the D-RAM
42
XOE
O
Output enable signal output to the D-RAM
43
VDD1 1.8V
—
Power supply terminal (+1.8V) (for digital system)
44 to 51
MD0 to MD7
I/O
Two-way data bus with the D-RAM
52
VSS
—
Ground terminal (for digital system)
53 to 60
MD8 to MD15
I/O
Two-way data bus with the D-RAM
61
VDD 3.3V
—
Power supply terminal (+3.3V) (for digital system)
62
DATA
O
CD data output to the AV decoder
63
BCLK
O
CD bit clock signal output to the AV decoder
64
VSS
—
Ground terminal (for digital system)
65
LRCK
O
CD LR clock signal output to the AV decoder
66
DOUT
O
Digital signal output to the AV decoder
67
VDD 1.8V
—
Power supply terminal (+1.8V) (for digital system)
68
SDCK
O
SD bus clock signal output to the AV decoder
69
XSHD
O
SD bus header signal output to the AV decoder
70
XSRQ
I
SD bus request signal input from the AV decoder
71
XSAK
O
SD bus acknowledge signal output to the AV decoder
72
SDEF
O
SD bus error flag signal output to the AV decoder
73 to 81
SD0 to SD7
O
SD bus data output to the AV decoder
82
VDD 3.3V
—
Power supply terminal (+3.3V) (for digital system)
83 to 88
MNT0 to MNT5
I/O
Monitor signal input/output terminal Not used
89, 90
MNT6, MNT7
I/O
Monitor signal input/output terminal Not used
91
ESTB
O
Error strobe signal output terminal Not used
92
VDD 1.8V
—
Power supply terminal (+1.8V) (for digital system)
93
RFD
I/O
RF digital data input/output terminal Not used
94
VSS
—
Ground terminal (for digital system)