ADSP-2184BST-160 Просмотр технического описания (PDF) - Analog Devices

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производитель

ADSP-2184BST-160

DSP Microcomputer

Analog Devices 

ADSP-2184

Parameter

Min

Max

Unit

IDMA Write, Long Write Cycle

Timing Requirements:

tIKW

IACK Low before Start of Write1

0

ns

tIKSU

IAD15–0 Data Setup before IACK Low2, 3, 4

0.5 tCK + 10

ns

tIKH

IAD15–0 Data Hold after IACK Low2, 3, 4

2

ns

Switching Characteristics:

tIKLW

Start of Write to IACK Low4

tIKHW

Start of Write to IACK High

1.5 tCK

ns

15

ns

NOTES

1Start of Write = IS Low and IWR Low.

2If Write Pulse ends before IACK Low, use specifications tIDSU, tIDH.

3If Write Pulse ends after IACK Low, use specifications tIKSU, tIKH.

4This is the earliest time for IACK Low from Start of Write. For IDMA Write cycle relationships, please refer to the ADSP-2100 Family User’s Manual, Third Edition.

IACK

IS

tIKW

tIKHW

tIKLW

IWR

IAD 15–0

tIKSU

tIKH

DATA

Figure 17. IDMA Write, Long Write Cycle

REV. 0

–23–

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