Analog Devices ADSP-2181 Manual page 27

ADSP-2181
Parameter
IDMA Write, Short Write Cycle
Timing Requirements:
t IACK Low before Start of Write
IKW
t Duration of Write
IWP
t IAD15–0 Data Setup before End of Write
IDSU
t IAD15–0 Data Hold after End of Write
IDH
Switching Characteristics:
t Start of Write to IACK High
IKHW
ADSP-2183
Parameter
IDMA Write, Short Write Cycle
Timing Requirements:
t IACK Low before Start of Write
IKW
t Duration of Write
IWP
t IAD15–0 Data Setup before End of Write
IDSU
t IAD15–0 Data Hold after End of Write
IDH
Switching Characteristics:
t Start of Write to IACK High
IKHW
NOTES
1
Start of Write = IS Low and IWR Low.
2
End of Write = IS High or IWR High.
3
If Write Pulse ends before IACK Low, use specifications t
4
If Write Pulse ends after IACK Low, use specifications t
REV. 0
1
1, 2
2, 3, 4
2, 3, 4
1
1, 2
2, 3, 4
2, 3, 4
, t .
IDSU IDH
, t .
IKSU IKH
t
IKW
IACK
t
IKHW
IS
IWR
IAD 15–0
Figure 29. IDMA Write, Short Write Cycle
Min
0
15
5
2
28.8 MHz
Min
0
15
5
2
t
IWP
t
IDH
t
IDSU
DATA
–27–
ADSP-2181/ADSP-2183
Max
15
Max
17
Unit
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns