AM1705 Datasheet, PDF (114/155 Pages) Texas Instruments – AM1705 ARM Microprocessor

AM1705
SPRS657 – FEBRUARY 2010
6.20 Enhanced Quadrature Encoder (eQEP) Peripheral
The device contains up to two enhanced quadrature encoder (eQEP) modules.
SYSCLK2
System
control registers
EQEPxENCLK
To CPU
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16
QCTMRLAT
QCPRDLAT
QCAPCTL
16
QCPRD
QCTMR
16
Quadrature
capture unit
(QCAP)
Registers
used by
multiple units
QEPCTL
QEPSTS
QFLG
EQEPxINT
16
QPOSLAT
QPOSSLAT
QPOSILAT
QUTMR
QUPRD
32
QWDTMR
QWDPRD
16
UTOUT
UTIME
QWDOG
QDECCTL
16
WDTOUT
Position counter/
control unit
(PCCU)
QCLK
QDIR
QI
QS
PHE
Quadrature
decoder
(QDU)
PCSOUT
32
32
16
EQEPxAIN
EQEPxBIN
EQEPxA/XCLK
EQEPxIIN
EQEPxIOUT
EQEPxIOE
EQEPxSIN
EQEPxB/XDIR
GPIO
MUX
EQEPxI
EQEPxSOUT
EQEPxSOE
EQEPxS
QPOSCNT
QPOSINIT
QPOSMAX
QPOSCMP
QEINT
QFRC
QCLR
QPOSCTL
Enhanced QEP (eQEP) peripheral
Figure 6-36. eQEP Functional Block Diagram
114 Peripheral Information and Electrical Specifications
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