adsp2185 Analog Devices, Inc., adsp2185 Datasheet - Page 27

• Manufacturer Part Number: adsp2185
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

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Parameter
IDMA Read, Short Read Cycle
Timing Requirements:
t
t
Switching Characteristics:
t
t
t
t
t
NOTES
1
2
IKR
IRP
IKHR
IKDH
IKDD
IRDE
IRDV
Start of Read = IS Low and IRD Low.
End of Read = IS High or IRD High.
IACK Low before Start of Read
Duration of Read
IACK High after Start of Read
IAD15–0 Data Hold after End of Read
IAD15–0 Data Disabled after End of Read
IAD15–0 Previous Data Enabled after Start of Read
IAD15–0 Previous Data Valid after Start of Read
IAD 15–0
IACK
1
IRD
1
Figure 24. IDMA Read, Short Read Cycle
IS
2
t
IKR
t
IRDE
2
t
t
IKHR
IRDV
–27–
t
IRP
PREVIOUS
DATA
Min
0
15
0
0
t
IKDD
Max
15
10
15
t
IKDH
Unit
ns
ns
ns
ns
ns
ns
ns
ADSP-2185