參數資料
型號: CXD1198AQ
廠商: Sony Corporation
英文描述: CD-ROM Subcode Decoder
中文描述: 光盤子碼解碼器
文件頁數: 13/51頁
文件大?。?/td> 426K
代理商: CXD1198AQ
—13—
CXD1198AQ
7. Drive DMA cycle
(1) Read
(2) Write
DDRQ
XDAC
XDRD
DDB0 to 7
t
DDA
t
DAR
t
SRD
t
HRD
t
DARS
t
RRL
t
DRA
Item
XDAC fall time (vs. DDRQ
)
DDRQ cycle time (vs. XDAC
)
XDRD delay time (vs. XDAC
)
XDAC delay time (vs. XDRD
)
Low-level XDRD pulse width
Data setup time (vs. XDRD
)
Data hold time (vs. XDRD
)
T
W
is 1/f here.
Symbol
t
DDA
t
DARS
t
DAR
t
DRA
t
RRL
t
SRD
t
HRD
Min.
0
25
0
Typ.
2T
W
+10
Max.
T
W
+32
TW
8
T
W
–5
Unit
ns
ns
ns
ns
ns
ns
ns
DDRQ
XDAC
XDWR
DDB0 to 7
t
DDA
t
DAW
t
DDW
t
FWD
t
DAR
t
WWL
t
DWA
Item
XDAC fall time (vs. DDRQ
)
DDRQ rise time (vs. XDAC
)
XDWR delay time (vs. XDAC
)
XDAC delay time (vs. XDWR
)
Low-level XDWR pulse width
Data delay time (vs. XDWR
)
Data float time (vs. XDWR
)
T
W
is 1/f here.
Symbol
t
DDA
t
DARS
t
DAW
t
DWA
t
WWL
t
DDW
t
FWD
Min.
2T
W
+5
10
Typ.
Max.
T
W
+32
T
W
5
T
W
2T
W
+18
60
Unit
ns
ns
ns
ns
ns
ns
ns
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