Register 54: Ethernet MAC Receive Poll Demand (EMACRXPOLLD), offset
0xC08
The Ethernet MAC Receive Poll Demand (EMACRXPOLLD) register enables the RX DMA to
check for new descriptors. This command is used to wake up the RX DMA from the SUSPEND
state. The RX DMA can go into the SUSPEND state only because of the unavailability of descriptors
it owns.
Ethernet MAC Receive Poll Demand (EMACRXPOLLD)
Base 0x400E.C000
Offset 0xC08
Type WO, reset 0x0000.0000
16171819202122232425262728293031
RPD
WOWOWOWOWOWOWOWOWOWOWOWOWOWOWOWOType
0000000000000000Reset
0123456789101112131415
RPD
WOWOWOWOWOWOWOWOWOWOWOWOWOWOWOWOType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
Receive Poll Demand
When these bits are written with any value, the DMA reads the current
descriptor pointed to by MAC Current Host Receive Descriptor
(EMACHOSRXDESC) register. If that descriptor is not available (owned
by the Host), the reception returns to the SUSPEND state and the RU
bit of EMACDMARIS is not asserted. If the descriptor is available, the
RX DMA returns to the active state.
0x0WORPD31:0
June 18, 20141558
Texas Instruments-Production Data
Ethernet Controller
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