TMS320F28379S_16 Datasheet, PDF (128/213 Pages) Texas Instruments – Programmable Control Law Accelerator

TMS320F28379S, TMS320F28377S
TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881C – AUGUST 2014 – REVISED MAY 2016
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5.9.3.1 eQEP Electrical Data and Timing
Table 5-63 lists the eQEP timing requirement and Table 5-64 lists the eQEP switching characteristics.
Table 5-63. eQEP Timing Requirements⁽¹⁾
t_w(QEPP)
QEP input period
Synchronous
With input qualifier
t_w(INDEXH)
QEP Index Input High time
Synchronous
With input qualifier
t_w(INDEXL)
QEP Index Input Low time
Synchronous
With input qualifier
t_w(STROBH)
QEP Strobe High time
Synchronous
With input qualifier
t_w(STROBL)
QEP Strobe Input Low time
Synchronous
With input qualifier
(1) For an explanation of the input qualifier parameters, see Table 5-26.
MIN
2t_c(SYSCLK)
2[1t_c(SYSCLK) + t_w(IQSW)]
2t_c(SYSCLK)
2t_c(SYSCLK) + t_w(IQSW)
2t_c(SYSCLK)
2t_c(SYSCLK) + t_w(IQSW)
2t_c(SYSCLK)
2t_c(SYSCLK) + t_w(IQSW)
2t_c(SYSCLK)
2t_c(SYSCLK) + t_w(IQSW)
MAX
UNIT
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
Table 5-64. eQEP Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
t_d(CNTR)xin
t_{d(PCS-OUT)QEP}
Delay time, external clock to counter increment
Delay time, QEP input edge to position compare sync output
MIN
MAX
4t_c(SYSCLK)
6t_c(SYSCLK)
UNIT
cycles
cycles
128 Specifications
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