55
STR-DG710
• IC Pin Descriptions
IC1501 CXD9718BQ (DIGITAL SIGNAL PROCESSOR) (DIGITAL BOARD (1/3))
Pin No .
Pin Name
I/O
Pin Descr iption
1
VSS
—
Ground pin
2
XRST
I
Reset signal input from system control IC
3
EXTIN
I
Not used. (Connect to ground.)
4
LRCKI3
I
Not used. (Connect to ground.)
5
VDDI
I
Power supply pin (+1.9 V)
6
BCKI3
I
Not used. (Connect to ground.)
7
PLOCK
O
Not used. (Open)
8
VSS
—
Ground pin
9
MCLK1
I
Clock signal input (13.9 MHz)
10
VDDI
I
Power supply pin (+1.9 V)
11
VSS
—
Ground pin
12
MCLK2
O
Clock signal output (13.9 MHz)
13
MS
I
Not used. (Fixed at L.)
14
SCKOUT
O
Internal system clock signal output for 8CH D/A converter IC
15
LRCKI1
I
Sampling clock signal input from A/D converter IC
16
VDDE
I
Power supply pin (+3.3 V)
17
BCKI1
I
Bit clock signal input from A/D converter IC
18
SDI1
I
Audio IF data input from A/D converter IC
19
LRCKO
O
Sampling clock signal output for 8CH D/A converter IC
20
BCKO
O
Bit clock signal output for 8CH D/A converter IC
21
VSS
—
Ground pin
22
KFSIO
I/O
Audio clock signal (384fs/256fs) input/output for digital audio interface receiver IC
23 to 26
SDO1 to SDO4
O
Digital audio serial data output for 8CH D/A converter IC
27
SPDIF
O
Not used. (Open)
28
LRCKI2
I
Sampling clock signal input from A/D converter IC
29
BCKI2
I
Bit clock signal input from A/D converter IC
30
SDI2
I
Digital audio serial data input from digital audio interface receiver IC
31
VSS
—
Ground pin
32
HACN
O
Acknowledge signal output for system control IC
33
HDIN
I
Serial data input from system control IC
34
HCLK
I
Clock signal input from system control IC
35
HDOUT
O
Serial data output for system control IC
36
HCS
I
Chip select signal input from system control IC
37
GP12
I
GP12 signal input from system control IC
38, 39
GP13, GP14
O
Not used. (Open)
40
VDDI
I
Power supply pin (+1.9 V)
41
VSS
—
Ground pin
42
GP15
O
Not used. (Open)
43
CE0
O
SDRAM enable signal output
44
CS0
O
External memory chip select signal output for SDRAM IC
45
WE0
O
SDRAM write enable signal output for SDRAM IC
46
VDDE
I
Power supply pin (+3.3 V)
47
WMD1
I
Not used. (Fixed at H.)
48
VSS
—
Ground pin
49
WMD0
I
Not used. (Fixed at H.)
50
PAGE2
O
Not used. (Open)
51
VSS
—
Ground pin
52, 53
PAGE1, PAGE0
O
Not used. (Open)
54
BOOT
I
Not used. (Connect to ground.)
55
TST1
O
Not used. (Open)
56
BST
I
Boot stop signal input
