X=N x P
P
QA
QB
QCLK
UPEVNT
QCAPCTL:CEN
Capture timer
control unit
(CTCU)
QCPRD
QCTMR
QCTMRLAT
QCPRDLAT
16
16
3-bit binary
divider
x1, 1/2, 1/4...,
1/128
CAPCLK
QCAPCTL:CCPS
3
SYSCLKOUT
16
0xFFFF
16
QEPSTS:COEF
x1, 1/2, 1/4...,
1/2048
4-bit binary
divider
QCLK
Rising/falling
edge detect
QDIR
QEPSTS:CDEF
QEPCTL:UTE
QUTMR
QUPRD
SYSCLKOUT
QFLG:UTO
UTIME
4
QCAPCTL:UPPS
UTOUT
QEPSTS:UPEVNT
UPEVNT
Enhanced Quadrature Encoder Pulse (eQEP) Module
Figure 15-143. eQEP Edge Capture Unit
Figure 15-144. Unit Position Event for Low Speed Measurement (QCAPCTL[UPPS] = 0010)
N - Number of quadrature periods selected using QCAPCTL[UPPS] bits
1667
SPRUH73H – October 2011 – Revised April 2013
Pulse-Width Modulation Subsystem (PWMSS)
Copyright © 2011–2013, Texas Instruments Incorporated