參數資料
型號: ADSP-2181BS-115
廠商: ANALOG DEVICES INC
元件分類: 數字信號處理
英文描述: DSP Microcomputer
中文描述: 24-BIT, 14.4 MHz, OTHER DSP, PQFP128
封裝: PLASTIC, QFP-128
文件頁數: 22/32頁
文件大?。?/td> 290K
代理商: ADSP-2181BS-115
REV. D
ADSP-2181
–22–
Parameter
Min
Max
Unit
IDMA Write, Long Write Cycle
Timing Requirements
:
t
IK W
t
IK SU
t
IK H
IACK
Low before Start of Write
1
IAD15–0 Data Setup before
IACK
Low
2, 3
IAD15–0 Data Hold after
IACK
Low
2, 3
0
0.5t
CK
+ 10
2
ns
ns
ns
Switching Characteristics
:
t
IK LW
t
IK HW
Start of Write to
IACK
Low
4
Start of Write to
IACK
High
1.5t
CK
ns
ns
15
NOT ES
1
Start of Write =
IS
Low and
IWR
Low.
2
If Write Pulse ends before
IACK
Low, use specifications t
IDSU
, t
IDH
.
3
If Write Pulse ends after
IACK
Low, use specifications t
, t
.
4
T his is the earliest time for
IACK
Low from Start of Write. For IDMA Write cycle relationships, please refer to the User’s Manual.
IAD15–0
DATA
t
IKHW
t
IKW
IACK
IS
IWR
t
IKLW
t
IKH
t
IKSU
Figure 16. IDMA Write, Long Write Cycle
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