參數(shù)資料
型號: ADSP-2191MBSTZ-140
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: 16-bit Fixed-Point DSP, 160 MIPS, 160K bytes RAM; Package: 144 ld LQFP (20x20mm); No of Pins: 144; Temperature Range: Ind
中文描述: 16-BIT, 100 MHz, OTHER DSP, PQFP144
封裝: PLASTIC, LQFP-144
文件頁數(shù): 14/48頁
文件大小: 1789K
代理商: ADSP-2191MBSTZ-140
–21–
REV. A
ADSP-2191M
Programmable Flags Cycle Timing
Table 10 and Figure 9 describe Programmable Flag operations.
Timer PWM_OUT Cycle Timing
Table 11 and Figure 10 describe timer expired operations. The
input signal is asynchronous in “width capture mode” and has
an absolute maximum input frequency of 40 MHz.
Table 10. Programmable Flags Cycle Timing
Parameter
Min
Max
Unit
Switching Characteristics
t
DFO
Flag Output Delay with Respect to CLKOUT
7
ns
t
HFO
Flag Output Hold After CLKOUT High
6
ns
Timing Requirement
t
HFI
Flag Input Hold is Asynchronous
3
ns
Figure 9. Programmable Flags Cycle Timing
PF
(INPUT)
tHFI
PF
(OUTPUT)
CLKOUT
FLAG INPUT
tDFO
tHFO
FLAG OUTPUT
Table 11. Timer PWM_OUT Cycle Timing
Parameter
Min
Max
Unit
Switching Characteristic
t
HTO
Timer Pulsewidth Output
1
12.5
(2
32 –1) cycles
ns
1The minimum time for t
HTO is one cycle, and the maximum time for tHTO equals (2
32 –1) cycles.
Figure 10. Timer PWM_OUT Cycle Timing
HCLK
PWM_OUT
tHTO
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