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Parameter
IDMA Read, Short Read Cycle
Timing Requirements:
t
IACK Low before Start of Read
IKR
t
Duration of Read
IRP
Switching Characteristics:
t
IACK High after Start of Read
IKHR
t
IAD15–0 Data Hold after End of Read
IKDH
t
IAD15–0 Data Disabled after End of Read
IKDD
t
IAD15–0 Previous Data Enabled after Start of Read
IRDE
t
IAD15–0 Previous Data Valid after Start of Read
IRDV
NOTES
1
Start of Read = IS Low and IRD Low.
2
End of Read = IS High or IRD High.
REV. 0
1
1
2
2
IACK
t
IKR
t
IKHR
IS
IRD
t
IRDE
IAD 15–0
t
IRDV
Figure 24. IDMA Read, Short Read Cycle
–27–
Min
0
15
0
0
t
IRP
t
IKDH
PREVIOUS
DATA
t
IKDD
ADSP-2186
Max
Unit
ns
ns
15
ns
ns
10
ns
ns
15
ns
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