Datasheet

Register 178: Quadrature Encoder Interface Peripheral Ready (PRQEI), offset
0xA44
The PRQEI register indicates whether the QEI modules are ready to be accessed by software
following a change in status of power, Run mode clocking, or reset. A power change is initiated if
the corresponding PCQEI bit is changed from 0 to 1. A Run mode clocking change is initiated if the
corresponding RCGCQEI bit is changed. A reset change is initiated if the corresponding SRQEI bit
is changed from 0 to 1.
The PRQEI bit is cleared on any of the above events and is not set again until the module is
completely powered, enabled, and internally reset.
Quadrature Encoder Interface Peripheral Ready (PRQEI)
Base 0x400F.E000
Offset 0xA44
Type RO, reset 0x0000.0000
16171819202122232425262728293031
reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
R0reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved31:1
QEI Module 0 Peripheral Ready
DescriptionValue
QEI module 0 is not ready for access. It is unclocked,
unpowered, or in the process of completing a reset sequence.
0
QEI module 0 is ready for access.1
0ROR00
525June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C129ENCPDT Microcontroller