參數(shù)資料
型號(hào): ADSP-2189NKSTZ-320
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號(hào)處理
英文描述: 16-Bit, 80MIPS, 1.8V, 2 Serial Ports, Host Port, 192KB RAM; Package: 100 ld LQFP; No of Pins: 100; Temperature Range: Comm.
中文描述: 24-BIT, 40 MHz, OTHER DSP, PQFP100
封裝: LEAD FREE, MS-026BED, LQFP-100
文件頁(yè)數(shù): 30/48頁(yè)
文件大?。?/td> 2334K
代理商: ADSP-2189NKSTZ-320
Rev. A
|
Page 36 of 48
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August 2006
ADSP-218xN
IDMA Write, Long Write Cycle
Table 23. IDMA Write, Long Write Cycle
Parameter
Min
Max
Unit
Timing Requirements:
tIKW
IACK Low Before Start of Write1
0ns
tIKSU
IAD15 – 0 Data Setup Before End of Write2, 3, 4
0.5tCK + 5
ns
tIKH
IAD15–0 Data Hold After End of Write2, 3, 4
0ns
Switching Characteristics:
tIKLW
Start of Write to IACK Low
1.5tCK
ns
tIKHW
Start of Write to IACK High
10
ns
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.
Figure 34. IDMA Write, Long Write Cycle
IAD15–0
DATA
tIKHW
t
IK W
IACK
IS
IWR
tIKLW
tIKH
t
IK SU
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