Adsp-2181, Adsp-2183 – Analog Devices ADSP-2181 User Manual
Page 27
ADSP-2181/ADSP-2183
REV. 0
–27–
ADSP-2181
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
ADSP-2183
28.8 MHz
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
17
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 29. IDMA Write, Short Write Cycle