
ADSP-2181
–21–
REV. D
Parameter
Min
Max
Unit
IDMA Write, Short Write Cycle
Timing Requirements:
tIKW
IACK Low before Start of Write1
0ns
tIWP
Duration of Write
1, 2
15
ns
tIDSU
IAD15–0 Data Setup before End of Write
2, 3, 4
5ns
tIDH
IAD15–0 Data Hold after End of Write
2, 3, 4
2ns
Switching Characteristic:
tIKHW
Start of Write to
IACK High
15
ns
NOTES
1Start of Write =
IS Low and IWR Low.
2End of Write =
IS High or IWR High.
3If Write Pulse ends before
IACK Low, use specifications t
IDSU, tIDH.
4If Write Pulse ends after
IACK Low, use specifications t
IKSU, tIKH .
IAD15–0
DATA
tIKHW
tIKW
tIDSU
IACK
tIWP
tIDH
IS
IWR
Figure 15. IDMA Write, Short Write Cycle