參數(shù)資料
型號: ADSP-BF531SBST400
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: Circular Connector Series:97
中文描述: 16-BIT, 40 MHz, OTHER DSP, PQFP176
封裝: 24 X 24 MM, LQFP-176
文件頁數(shù): 37/56頁
文件大小: 671K
代理商: ADSP-BF531SBST400
ADSP-BF531/ADSP-BF532/ADSP-BF533
Rev. 0
|
Page 37 of 56
|
March 2004
Timer Cycle Timing
Table 30
and
Figure 23
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 f
SCLK
/2 MHz.
Table 30. Timer Cycle Timing
Parameter
Timing Characteristics
t
WL
t
WH
Switching Characteristics
t
HTO
1
The minimum pulse widths apply for TMRx input pins in width capture and external clock modes. They also apply to the PF1 or PPI_CLK input pins in PWM output mode.
2
The minimum time for t
HTO
is one cycle, and the maximum time for t
HTO
equals (2
–1) cycles.
Min
Max
Unit
Timer Pulse Width Input Low
1
(Measured in SCLK Cycles)
Timer Pulse Width Input High
1
(Measured in SCLK Cycles)
1
1
SCLK
SCLK
Timer Pulse Width Output
2
(Measured in SCLK Cycles)
1
(2
32
–1)
SCLK
Figure 23. Timer PWM_OUT Cycle Timing
CLKOUT
TMRx
(PWM OUTPUT MODE)
t
HTO
TMRx
(WIDTH CAPTURE AND
EXTERNAL CLOCK MODES)
t
WL
t
WH
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