參數(shù)資料
型號: ADSP-BF531SBBZ400
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: Blackfin Embedded Processor
中文描述: 16-BIT, 40 MHz, OTHER DSP, PBGA169
封裝: ROHS COMPLIANT, PLASTIC, MO-034AAG-2, BGA-169
文件頁數(shù): 24/56頁
文件大?。?/td> 671K
代理商: ADSP-BF531SBBZ400
Rev. 0
|
Page 24 of 56
|
March 2004
ADSP-BF531/ADSP-BF532/ADSP-BF533
Asynchronous Memory Write Cycle Timing
Table 17. Asynchronous Memory Write Cycle Timing
Parameter
Timing Requirements
t
SARDY
t
HARDY
Switching Characteristics
t
DDAT
t
ENDAT
t
DO
t
HO
Min
Max
Unit
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
4.0
0.0
ns
ns
DATA15–0 Disable After CLKOUT
DATA15–0 Enable After CLKOUT
Output Delay After CLKOUT
1
Output Hold After CLKOUT
1
6.0
ns
ns
ns
ns
1.0
1
Output pins include AMS3–0, ABE1–0, ADDR19–1, DATA15–0, AOE, AWE.
6.0
0.8
Figure 12. Asynchronous Memory Write Cycle Timing
t
DO
t
ENDAT
CLKOUT
AMSx
ABE1–0
ADDR19–1
BE, ADDRESS
t
HO
WRITE DATA
t
DDAT
DATA15–0
AWE
t
SARDY
t
HARDY
SETUP
2 CYCLES
PROGRAMMED WRITE
ACCESS 2 CYCLES
ACCESS
EXTENDED
1 CYCLE
HOLD
1 CYCLE
ARDY
t
HO
t
SARDY
t
DO
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