Register 57: Ethernet MAC DMA Interrupt Status (EMACDMARIS), offset 0xC14
The MAC DMA Interrupt Status (EMACDMARIS) register contains all status bits that the DMA
reports to the host. The software driver reads this register during an interrupt service routine or
polling. Most of the fields in this register cause the host to be interrupted. The bits of this register
are not cleared when read. Writing a 1 to any bit in the lower half-word of this register clears the bit
and writing a 0 has no effect. Status bits [16:0] can be masked by enabling the appropriate mask
in the MAC DMA Interrupt Mask Register (EMACDMAIM) register.
Ethernet MAC DMA Interrupt Status (EMACDMARIS)
Base 0x400E.C000
Offset 0xC14
Type RW, reset 0x0000.0000
16171819202122232425262728293031
NISRSTSAEreservedMMCPMTTTreserved
RW1CROROROROROROROROROROROROROROROType
0000000000000000Reset
0123456789101112131415
TITPSTUTJTOVFUNFRIRURPSRWTETIreservedFBIERIAIS
RW1CRW1CRW1CRW1CRW1CRW1CRW1CRW1CRW1CRW1CRW1CRORORW1CRW1CRW1CType
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.
0x0ROreserved31:30
Timestamp Trigger Interrupt Status
Software can read the Ethernet MAC Timestamp Status
(EMACTIMSTAT) register for the exact cause of interrupt and clear its
source to reset this bit to 0. When this bit is 1, the interrupt signal from
the MAC subsystem is high.
DescriptionValue
No Timestamp interrupt has occurred.0
An interrupt event in the Timestamp module has occurred.1
0x0ROTT29
MAC PMT Interrupt Status
Software can read the PMT Control and Status (EMACPMTCTLSTAT)
register for the exact cause of the interrupt and clear its source to reset
this bit to 0. When this bit is 1, the interrupt signal from the MAC
subsystem is high.
DescriptionValue
No PMT interrupt has occurred.0
An interrupt event in the PMT module has occurred.1
0x0ROPMT28
1561June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller
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