參數(shù)資料
型號(hào): ADSP-BF548BBCZ-5A
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號(hào)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(yè)數(shù): 65/100頁(yè)
文件大?。?/td> 3095K
代理商: ADSP-BF548BBCZ-5A
ADSP-BF542/ADSP-BF544/ADSP-BF547/ADSP-BF548/ADSP-BF549
Rev. D
|
Page 67 of 100
|
May 2011
Timer Cycle Timing
Table 48 and Figure 42 describe timer expired operations. The
input signal is asynchronous in “width capture mode” and
“external clock mode” and has an absolute maximum input fre-
quency of (fSCLK/2) MHz.
Table 48. Timer Cycle Timing
Parameter
Min
Max
Unit
Timing Characteristics
tWL
Timer Pulse Width Input Low
1
tSCLK +1
ns
tWH
Timer Pulse Width Input High
tSCLK +1
ns
tTIS
Timer Input Setup Time Before CLKOUT Low2
6.5
ns
tTIH
Timer Input Hold Time After CLKOUT Low2
–1
ns
Switching Characteristics
tHTO
Timer Pulse Width Output
1× tSCLK
(2
32 – 1) × t
SCLK
ns
tTOD
Timer Output Delay After CLKOUT High
6
ns
1 The minimum pulse widths apply for TMRx signals in width capture and external clock modes.
2 Either a valid setup and hold time or a valid pulse width is sufficient. There is no need to resynchronize timer flag inputs.
Figure 42. Timer Cycle Timing
CLKOUT
TMRx OUTPUT
TMRx INPUT
tTIS
tTIH
tWH,tWL
tTOD
tHTO
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ADSP-BF548BBCZ-5X 制造商:Analog Devices 功能描述:- Trays
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ADSP-BF549BBCZ 制造商:Analog Devices 功能描述:
ADSP-BF549BBCZ-ENG 制造商:Analog Devices 功能描述:- Bulk