Texas Instruments Hercules TMS570LS04x/03x LaunchPad Evaluation Kit LAUNCHXL-TMS57004 LAUNCHXL-TMS57004 数据表
产品代码
LAUNCHXL-TMS57004
SPNS186A – OCTOBER 2012 – REVISED SEPTEMBER 2013
5.8.4
Enhanced Quadrature Encoder Pulse (eQEPx) Timing
Table 5-18. eQEPx Timing Requirements
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
t
w(QEPP)
QEP input period
Synchronous
2 t
c(VCLK)
cycles
Synchronous, with input
2 t
c(VCLK)
+ filter width
cycles
filter
t
w(INDEXH)
QEP Index Input High Time
Synchronous
2 t
c(VCLK)
cycles
Synchronous, with input
2 t
c(VCLK)
+ filter width
cycles
filter
t
w(INDEXL)
QEP Index Input Low Time
Synchronous
2 t
c(VCLK)
cycles
Synchronous, with input
2 t
c(VCLK)
+ filter width
cycles
filter
t
w(STROBH)
QEP Strobe Input High Time
Synchronous
2 t
c(VCLK)
cycles
Synchronous, with input
2 t
c(VCLK)
+ filter width
cycles
filter
t
w(STROBL)
QEP Strobe Input Low Time
Synchronous
2 t
c(VCLK)
cycles
Synchronous, with input
2 t
c(VCLK)
+ filter width
cycles
filter
Table 5-19. eQEPx Switching Characteristics
PARAMETER
MIN
MAX
UNIT
t
d(CNTR)xin
Delay time, external clock to counter increment
4 t
c(VCLK)
cycles
t
d(PCS-OUT)QEP
Delay time, QEP input edge to position compare sync output
6 t
c(VCLK)
cycles
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Peripheral Information and Electrical Specifications
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