ADSP-2188NBSTZ-320 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADSP-2188NBSTZ-320

0.3-2.2V; instruction rate 80MHz; DSP microcomputer

Analog Devices 

ADSP-218xN

IDMA Write, Long Write Cycle

Table 23. IDMA Write, Long Write Cycle

Parameter

Min

Max

Timing Requirements:

tIKW

IACK Low Before Start of Write1

tIKSU

IAD15–0 Data Setup Before End of Write2, 3, 4

tIKH

IAD15–0 Data Hold After End of Write2, 3, 4

Switching Characteristics:

0

0.5tCK + 5

0

tIKLW

Start of Write to IACK Low4

tIKHW

Start of Write to IACK High

1.5tCK

10

1 Start of Write = IS Low and IWR Low.

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

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

4 This 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.

Unit

ns

ns

ns

ns

ns

IACK

IS

tIK W

tIKH W

tIK LW

IWR

IAD15 –0

tI K SU

DATA

tIK H

Figure 34. IDMA Write, Long Write Cycle

Rev. A | Page 36 of 48 | August 2006

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