adsp-2185m Analog Devices, Inc., adsp-2185m Datasheet - Page 32

• Manufacturer Part Number: adsp-2185m
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-2185M
Parameter
IDMA Read, Long Read Cycle
Timing Requirements:
t
t
Switching Characteristics:
t
t
t
t
t
t
t
t
NOTES
1
2
3
4
IKR
IRK
IKHR
IKDS
IKDH
IKDD
IRDE
IRDV
IRDH1
IRDH2
Start of Read = IS Low and IRD Low.
End of Read = IS High or IRD High.
DM read or first half of PM read.
Second half of PM read.
IACK Low before Start of Read
End of read after IACK Low
IACK High after Start of Read
IAD15–0 Data Setup before IACK Low
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
IAD15–0 Previous Data Hold after Start of Read (DM/PM1)
IAD15–0 Previous Data Hold after Start of Read (PM2)
IAD15–0
IACK
IRD
IS
t
IRDE
2
t
1
IKR
1
t
IRDV
2
t
IRDH1 or
t
2
IKHR
PREVIOUS
t
DATA
IRDH2
4
t
IKDS
3
READ
DATA
t
IRK
Min
0
2
0.5t
0
0
2t
t
CK
CK
– 5
CK
– 5
t
IKDD
– 2
t
IKDH
Max
10
10
11
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns