參數(shù)資料
型號: ADSP-BF548BBCZ-5A
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: 533 MHz Blackfin Embedded Processor: ADSP-BF548BBCZ-5A Temp Range: –40°C to +85°C Package: 400-Ball CSP_BGA BC-400-1
中文描述: 16-BIT, 50 MHz, OTHER DSP, PBGA400
封裝: 17 X 17 MM, ROHS COMPLIANT, CSBGA-400
文件頁數(shù): 41/100頁
文件大小: 3095K
代理商: ADSP-BF548BBCZ-5A
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Rev. D
|
Page 45 of 100
|
May 2011
Asynchronous Memory Write Cycle Timing
on Page 46 describe asynchronous memory write cycle opera-
tions for synchronous and for asynchronous ARDY.
Table 29. Asynchronous Memory Write Cycle Timing with Synchronous ARDY
Parameter
Min
Max
Unit
Timing Requirements
tSARDY
ARDY Setup Before the Falling Edge of CLKOUT
5.0
ns
tHARDY
ARDY Hold After the Falling Edge of CLKOUT
0.0
ns
Switching Characteristics
tDDAT
DATA15 – 0 Disable After CLKOUT
6.0
ns
tENDAT
DATA15 – 0 Enable After CLKOUT
0.0
ns
tDO
Output Delay After CLKOUT
1
6.0
ns
tHO
Output Hold After CLKOUT1
0.3
ns
1 Output pins include AMS3–0, ABE1–0, ADDR19–1, and AWE.
Figure 15. Asynchronous Memory Write Cycle Timing with Synchronous ARDY
SETUP
2 CYCLES
PROGRAMMED
WRITE ACCESS
2 CYCLES
ACCESS
EXTEND
1 CYCLE
HOLD
1 CYCLE
tDO
tHO
CLKOUT
AMSx
ABE1–0
ADDR19–1
AWE
DATA 15–0
tDO
tSARDY
tDDAT
tENDAT
tHO
tHARDY
ARDY
tSARDY
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