參數(shù)資料
型號(hào): ADSP2185
廠商: Analog Devices, Inc.
元件分類(lèi): 數(shù)字信號(hào)處理
英文描述: DSP Microcomputer
中文描述: DSP微機(jī)
文件頁(yè)數(shù): 25/32頁(yè)
文件大?。?/td> 289K
代理商: ADSP2185
ADSP-2185
REV. 0
–25–
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, 4
IAD15–0 Data Hold after
IACK
Low
2, 3, 4
0
0.5 t
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
1.5 t
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
IK SU
, t
IK H
.
4
T his 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
.
IAD 15–0
DATA
t
IKHW
t
IKW
IACK
IS
IWR
t
IKLW
t
IKH
t
IKSU
Figure 22. IDMA Write, Long Write Cycle
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PDF描述
ADSP2186 DSP Microcomputer
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