TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
SPRS439I–JUNE 2007–REVISED MARCH 2011
www.ti.com
4.6 Enhanced QEP Modules (eQEP1/2 )
The device contains up to two enhanced quadrature encoder (eQEP) modules . Figure 4-7 shows the
block diagram of the eQEP module.
System Control
Registers
To CPU
EQEPxENCLK
SYSCLKOUT
QCPRD
QCAPCTL
16
QCTMR
16
16
Quadrature
Capture
Unit
QCTMRLAT
QCPRDLAT
(QCAP)
QUTMR
QUPRD
QWDTMR
QWDPRD
Registers
Used by
Multiple Units
32
16
QEPCTL
QEPSTS
QFLG
UTOUT
QWDOG
UTIME
QDECCTL
16
WDTOUT
EQEPxAIN
EQEPxBIN
EQEPxIIN
EQEPxA/XCLK
EQEPxB/XDIR
EQEPxI
QCLK
QDIR
QI
EQEPxINT
16
PIE
Position Counter/
Control Unit
(PCCU)
EQEPxIOUT
EQEPxIOE
EQEPxSIN
EQEPxSOUT
EQEPxSOE
Quadrature
Decoder
(QDU)
QS
GPIO
MUX
QPOSLAT
QPOSSLAT
QPOSILAT
PHE
PCSOUT
EQEPxS
32
32
16
QPOSCNT
QPOSINIT
QPOSMAX
QEINT
QFRC
QPOSCMP
QCLR
QPOSCTL
Enhanced QEP (eQEP) Peripheral
Figure 4-7. eQEP Functional Block Diagram
76
Peripherals
Copyright © 2007–2011, Texas Instruments Incorporated
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TMS320F28232
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