DescriptionResetTypeNameBit/Field
Capture Mode
Note: When SIGMODE=1, the CAPMODE setting is not applicable and
is reserved.
DescriptionValue
Only the PhA edges are counted.0
The PhA and PhB edges are counted, providing twice the
positional resolution but half the range.
1
0RWCAPMODE3
Signal Mode
DescriptionValue
The internal PhA and PhB signals operate as quadrature phase
signals.
0
The internal PhA input operates as the clock (CLK) signal and
the internal PhB input operates as the direction (DIR) signal.
1
0RWSIGMODE2
Swap Signals
Note if the INVA or INVB bit are set, the inversion of the signals occur
prior to the swap.
DescriptionValue
No effect.0
Swaps the PhAn and PhBn signals.1
0RWSWAP1
Enable QEI
DescriptionValue
No effect.0
Enables the quadrature encoder module.1
Note: Once the QEI module has been enabled by setting the
ENABLE bit, it cannot be disabled. The only way to clear the
ENABLE bit is to reset the module using the Quadrature
Encoder Interface Software Reset (SRQEI) register.
0RWENABLE0
1757June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller
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