Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen
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Produktcode
DK-TM4C129X
Description
Reset
Type
Name
Bit/Field
Write Raw Interrupt Status
Description
Value
The number of available entries in the WFIFO is above the range
specified by the
specified by the
WRFIFO
field in the EPIFIFOLVL register.
0
The number of available entries in the WFIFO is within the
trigger range specified by the
trigger range specified by the
WRFIFO
field in the EPIFIFOLVL
register.
1
This bit is cleared when the level in the WFIFO is above the trigger point
programmed by the
programmed by the
WRFIFO
field.
1
RO
WRRIS
2
Read Raw Interrupt Status
Description
Value
The number of valid entries in the NBRFIFO is below the trigger
range specified by the
range specified by the
RDFIFO
field in the EPIFIFOLVL register.
0
The number of valid entries in the NBRFIFO is in the trigger
range specified by the
range specified by the
RDFIFO
field in the EPIFIFOLVL register.
1
This bit is cleared when the level in the NBRFIFO is below the trigger
point programmed by the
point programmed by the
RDFIFO
field.
0
RO
RDRIS
1
Error Raw Interrupt Status
The error interrupt occurs in the following situations:
■
WFIFO Full. For a full WFIFO to generate an error interrupt, the
WFERR
bit in the EPIFIFOLVL register must be set.
■
Read Stalled. For a stalled read to generate an error interrupt, the
RSERR
bit in the EPIFIFOLVL register must be set.
■
Timeout. If the
MAXWAIT
field in the EPIHBnCFG register is
configured to a value other than 0, a timeout error occurs when
XFIFO not-ready signals hold a transaction for more than the count
in the
XFIFO not-ready signals hold a transaction for more than the count
in the
MAXWAIT
field.
Description
Value
An error has not occurred.
0
A WFIFO Full, a Read Stalled, or a Timeout error has occurred.
1
To determine which error occurred, read the status of the EPI Error
Interrupt Status and Clear (EPIEISC) register. This bit is cleared by
writing a 1 to the bit in the EPIEISC register that caused the interrupt.
Interrupt Status and Clear (EPIEISC) register. This bit is cleared by
writing a 1 to the bit in the EPIEISC register that caused the interrupt.
0
RO
ERRRIS
0
941
December 13, 2013
Texas Instruments-Advance Information
Tiva
™
TM4C129XNCZAD Microcontroller