參數(shù)資料
型號: TMP320F2812ZHHQ
廠商: Texas Instruments, Inc.
英文描述: MICROSCOPE LTD SHOP W/DL RETICLE
中文描述: TMS320R2811,TMS320R2812數(shù)字信號處理器
文件頁數(shù): 100/147頁
文件大?。?/td> 2021K
代理商: TMP320F2812ZHHQ
Electrical Specifications
100
June 2004
SPRS257
6.16
Event Manager Interface
6.16.1
PWM Timing
PWM refers to all PWM outputs on EVA and EVB.
Table 6
12. PWM Switching Characteristics
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
t
w(PWM)§
t
d(PWM)XCO
See the GPIO output timing for fall/rise times for PWM pins.
PWM pin toggling frequency is limited by the GPIO output buffer switching frequency (20 MHz).
§
PWM outputs may be 100%, 0%, or increments of t
c(HCO)
with respect to the PWM period.
Pulse duration, PWMx output high/low
25
ns
Delay time, XCLKOUT high to PWMx output switching
XCLKOUT = SYSCLKOUT/4
10
ns
Table 6
13. Timer and Capture Unit Timing Requirements
#
MIN
MAX
UNIT
t
w(TDIR)
Pulse duration TDIRx low/high
Pulse duration, TDIRx low/high
Without input qualifier
With input qualifier
Without input qualifier
With input qualifier
2 * t
c(SCO)
1 * t
c(SCO)
+ IQT
||
2 * t
c(SCO)
1 * t
c(SCO)
+ IQT
||
40
cycles
t
w(CAP)
Pulse duration CAPx input low/high
Pulse duration, CAPx input low/high
cycles
t
w(TCLKINL)
t
w(TCLKINH)
t
c(TCLKIN)
The QUALPRD bit field value can range from 0 (no qualification) through 0xFF (510 SYSCLKOUT cycles). The qualification sampling period is
2n SYSCLKOUT cycles, where “n” is the value stored in the QUALPRD bit field. As an example, when QUALPRD = 1, the qualification sampling
period is 1 x 2 = 2 SYSCLKOUT cycles (i.e., the input is sampled every 2 SYSCLKOUT cycles). Six such samples will be taken over five sampling
windows, each window being 2n SYSCLKOUT cycles. For QUALPRD = 1, the minimum width that is needed is 5 x 2 = 10 SYSCLKOUT cycles.
However, since the external signal is driven asynchronously, a 11-SYSCLKOUT-wide pulse ensures reliable recognition.
#
Maximum input frequency to the QEP = min[HSPCLK/2, 20 MHz]
||
Input Qualification Time (IQT) = [5 x QUALPRD x 2] * t
c(SCO)
Pulse duration, TCLKINx low as a percentage of TCLKINx cycle time
60
%
Pulse duration, TCLKINx high as a percentage of TCLKINx cycle time
40
60
%
Cycle time, TCLKINx
4 * t
c(HCO)
ns
t
w(PWM)
t
d(PWM)XCO
PWMx
XCLKOUT
XCLKOUT = SYSCLKOUT
Figure 6
13. PWM Output Timing
XCLKOUT
t
w(TDIR)
TDIRx
XCLKOUT = SYSCLKOUT
Figure 6
14. TDIRx Timing
A
相關PDF資料
PDF描述
TMP320C2811ZHHQ TMS320R2811, TMS320R2812 Digital Signal Processors
TMR320F2811ZHHQ TMS320R2811, TMS320R2812 Digital Signal Processors
TMR320R2811ZHHQ TMS320R2811, TMS320R2812 Digital Signal Processors
TMX320F2811ZHHS TMS320R2811, TMS320R2812 Digital Signal Processors
TMX320R2811ZHHS TMS320R2811, TMS320R2812 Digital Signal Processors
相關代理商/技術參數(shù)
參數(shù)描述
TMP320F2812ZHHS 制造商:TI 制造商全稱:Texas Instruments 功能描述:TMS320R2811, TMS320R2812 Digital Signal Processors
TMP320LBC57PBK80 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:
TMP320LC2401APAGA 制造商:TI 制造商全稱:Texas Instruments 功能描述:DSP CONTROLLERS
TMP320LC2401APAGS 制造商:TI 制造商全稱:Texas Instruments 功能描述:DSP CONTROLLERS
TMP320LC2401APGA 制造商:TI 制造商全稱:Texas Instruments 功能描述:DSP CONTROLLERS