ADSP-2181
P aram eter
Min
Max
Unit
ID MA Wr ite, Shor t Wr ite Cycle
Timing Requirements:
tIKW
tIWP
tIDSU
tIDH
IACK Low before Start of Write1
0
15
5
ns
ns
ns
ns
Duration of Write1, 2
IAD15–0 Data Setup before End of Write2, 3, 4
IAD15–0 Data Hold after End of Write2, 3, 4
2
Switching Characteristic:
tIKHW
Start of Write to IACK High
15
ns
NOT ES
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 tIDSU, tIDH
.
4If Write Pulse ends after IACK Low, use specifications t IKSU, tIKH
.
tIKW
IACK
tIKHW
IS
tIWP
IWR
tIDH
tIDSU
DATA
IAD15–0
Figure 15. IDMA Write, Short Write Cycle
REV. D
–21–
ADI [ ADI ]
