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(jī)
文件頁數(shù): 26/32頁
文件大?。?/td> 231K
代理商: ADSP-21XX
ADSP-21mod870
TIMING PARAMETERS
–26–
REV. 0
Parameter
Min
Max
Unit
IDMA Write, Short Write Cycle
Timing Requirements
:
t
IKW
IACK
Low before Start of Write
1
t
IWP
Duration of Write
1, 2
t
IDSU
IAD15–0 Data Setup before End of Write
2, 3, 4
t
IDH
IAD15–0 Data Hold after End of Write
2, 3, 4
Switching Characteristics
:
t
IKHW
Start of Write to
IACK
High
0
15
5
2
ns
ns
ns
ns
4
15
ns
NOTES
1
Start of Write =
IS
Low and
IWR
Low.
2
End of Write =
IS
High or
IWR
High.
3
If Write Pulse ends before
IACK
Low, use specifications t
IDSU
, t
IDH
.
4
If Write Pulse ends after
IACK
Low, use specifications t
IKSU
, t
IKH
.
IAD15–0
DATA
t
IKHW
t
IKW
t
IDSU
IACK
t
IWP
t
IDH
IS
IWR
Figure 28. IDMA Write, Short Write Cycle
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