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ADSP-2186
TIMING PARAMETERS
Parameter
IDMA Write, Short Write Cycle
Timing Requirements:
IACK Low before Start of Write
t
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
1
1, 2
2, 3, 4
2, 3, 4
, t
.
IDSU
IDH
, t
.
IKSU
IKH
t
IKW
IACK
IS
IWR
IAD 15–0
Figure 21. IDMA Write, Short Write Cycle
Min
0
15
5
2
t
IKHW
t
IWP
t
IDH
t
IDSU
DATA
–24–
Max
Unit
ns
ns
ns
ns
15
ns
REV. 0
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