参数资料
型号: ADSP-BF548MBBCZ-5M
厂商: ANALOG DEVICES INC
元件分类: 数字信号处理
英文描述: 533 MHz Blackfin Embedded Processor: ADSP-BF548MBBCZ-5M 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
封装: 17 X 17 MM, ROHS COMPLIANT, CSBGA-400
文件页数: 42/100页
文件大小: 3095K
代理商: ADSP-BF548MBBCZ-5M
Rev. D
|
Page 46 of 100
|
May 2011
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Table 30. Asynchronous Memory Write Cycle Timing with Asynchronous ARDY
Parameter
Min
Max
Unit
Timing Requirements
tDANW
ARDY Negated Delay from AMSx Asserted1
(S + WA – 2) × tSCLK ns
tHAA
ARDY Asserted Hold After AWE Negated
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 CLKOUT2
6.0
ns
tHO
Output Hold After CLKOUT
0.3
ns
1 S = number of programmed setup cycles, WA = number of programmed write access cycles.
2 Output pins include AMS3–0, ABE1–0, ADDR19–1, AOE, and AWE.
Figure 16. Asynchronous Memory Write Cycle Timing with Asynchronous ARDY
SETUP
2 CYCLES
PROGRAMMED
WRITE ACCESS
2 CYCLES
ACCESS
EXTENDED
2 CYCLES
HOLD
1 CYCLE
tDO
tHO
CLKOUT
AMSx
ABE1–0
ADDR19–1
AWE
ARDY
DATA 15–0
tDO
tDDAT
tENDAT
tHO
tDANW
tHAA
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