Texas Instruments TMS320 2833 Series User Manual

v
(
k
)
+
x
(
k
)
* x
(
k * 1
)
T
+
DX
T
o
∆X
x(k−1)
∆T
t(k)
t(k−1)
T
QEPA
QEPB
QCLK
QPOSCNT
UPEVNT
QCTMR
UTOUT
x(k)
www.ti.com eQEP Edge Capture Unit
407
SPRUI07–March 2020
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Enhanced Quadrature Encoder Pulse (eQEP)
Figure 6-17. eQEP Edge Capture Unit - Timing Details
Velocity calculation equations:
(4)
where
v(k): Velocity at time instant k
x(k): Position at time instant k
x(k-1): Position at time instant k-1
T: Fixed unit time or inverse of velocity calculation rate
ΔX: Incremental position movement in unit time
X: Fixed unit position
ΔT: Incremental time elapsed for unit position movement
t(k): Time instant "k"
t(k-1): Time instant "k-1"
Unit time (T) and unit period(X) are configured using the QUPRD and QCAPCTL[UPPS] registers.
Incremental position output and incremental time output is available in the QPOSLAT and QCPRDLAT
registers.

Texas Instruments TMS320 2833 Series Specifications

General

Brand	Texas Instruments
Model	TMS320 2833 Series
Category	Controller
Language	English