Analog Devices ADSP-2186, Техническое описание

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ADSP-2186
REV. 0 –24–
TIMING PARAMETERS
Parameter Min Max Unit
IDMA Write, Short Write Cycle
Timing Requirements:
t
IKW
IACK Low before Start of Write
1
0 ns
t
IWP
Duration of Write
1, 2
15 ns
t
IDSU
IAD15–0 Data Setup before End of Write
2, 3, 4
5 ns
t
IDH
IAD15–0 Data Hold after End of Write
2, 3, 4
2 ns
Switching Characteristics:
t
IKHW
Start of Write to IACK High 15 ns
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
IDSU
, t
IDH
.
4
If Write Pulse ends after IACK Low, use specifications t
IKSU
, t
IKH
.
IAD 15–0 DATA
t
IKHW
t
IKW
t
IDSU
IACK
t
IWP
t
IDH
IS
IWR
Figure 21. IDMA Write, Short Write Cycle