參數(shù)資料
型號: ADSP-21XX
廠商: Analog Devices, Inc.
英文描述: ADSP-2100 Family DSP Microcomputers
中文描述: 的ADSP - 2100系列DSP的微機
文件頁數(shù): 27/32頁
文件大?。?/td> 231K
代理商: ADSP-21XX
ADSP-21mod870
–27–
REV. 0
Parameter
Min
Max
Unit
IDMA Write, Long Write Cycle
Timing Requirements
:
t
IKW
t
IKSU
t
IKH
Switching Characteristics
:
t
IKLW
t
IKHW
IACK
Low before Start of Write
1
IAD15–0 Data Setup before
IACK
Low
2, 3, 4
IAD15–0 Data Hold after
IACK
Low
2, 3, 4
0
0.5 t
CK
+ 10
2
ns
ns
ns
Start of Write to
IACK
Low
4
Start of Write to
IACK
High
1.5 t
CK
4
ns
ns
15
NOTES
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
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, Third Edition
.
IAD15–0
DATA
t
IKHW
t
IKW
IACK
IS
IWR
t
IKLW
t
IKH
t
IKSU
Figure 29. IDMA Write, Long Write Cycle
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