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): 23/56頁
文件大小: 671K
代理商: ADSP-BF531SBBZ400
ADSP-BF531/ADSP-BF532/ADSP-BF533
Rev. 0
|
Page 23 of 56
|
March 2004
Asynchronous Memory Read Cycle Timing
Table 16. Asynchronous Memory Read Cycle Timing
Parameter
Timing Requirements
t
SDAT
t
HDAT
t
SARDY
t
HARDY
Switching Characteristics
t
DO
t
HO
Min
Max
Unit
DATA15–0 Setup Before CLKOUT
DATA15–0 Hold After CLKOUT
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
2.1
0.8
4.0
0.0
ns
ns
ns
ns
Output Delay After CLKOUT
1
Output Hold After CLKOUT
1
1
Output pins include AMS3–0, ABE1–0, ADDR19–1, AOE, ARE.
6.0
ns
ns
0.8
Figure 11. Asynchronous Memory Read Cycle Timing
t
DO
t
SDAT
CLKOUT
AMSx
ABE1–0
t
HO
BE, ADDRESS
READ
t
HDAT
DATA15–0
AOE
t
DO
t
SARDY
t
HARDY
ACCESS EXTENDED
3 CYCLES
HOLD
1 CYCLE
ARE
t
HARDY
ARDY
ADDR19–1
SETUP
2 CYCLES
PROGRAMMED READ ACCESS
4 CYCLES
t
HO
t
SARDY
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