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ADSP2185 Datasheet(PDF) 26 Page - Analog Devices

Part # ADSP2185
Description  DSP Microcomputer
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADSP2185 Datasheet(HTML) 26 Page - Analog Devices

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ADSP-2185
REV. 0
–26–
Parameter
Min
Max
Unit
IDMA Read, Long Read Cycle
Timing Requirements:
tIKR
IACK Low before Start of Read
1
0ns
tIRP
Duration of Read
1
15
ns
Switching Characteristics:
tIKHR
IACK High after Start of Read
1
15
ns
tIKDS
IAD15–0 Data Setup before
IACK Low
0.5 tCK – 10
ns
tIKDH
IAD15–0 Data Hold after End of Read
2
0ns
tIKDD
IAD15–0 Data Disabled after End of Read
2
10
ns
tIRDE
IAD15–0 Previous Data Enabled after Start of Read
0
ns
tIRDV
IAD15–0 Previous Data Valid after Start of Read
15
ns
tIRDH1
IAD15–0 Previous Data Hold after Start of Read (DM/PM1)
3
2 tCK – 5
ns
tIRDH2
IAD15–0 Previous Data Hold after Start of Read (PM2)
4
tCK – 5
ns
NOTES
1Start of Read = IS Low and IRD Low.
2End of Read = IS High or IRD High.
3DM read or first half of PM read.
4Second half of PM read.
tIRP
tIKR
PREVIOUS
DATA
READ
DATA
tIKHR
tIKDS
tIRDV
tIRDH
tIKDD
tIRDE
tIKDH
IAD 15–0
IACK
IS
IRD
Figure 23. IDMA Read, Long Read Cycle



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