Texas Instruments TM4C1294NCPDT User Manual

Register 2: Ethernet MAC Frame Filter (EMACFRAMEFLTR), offset 0x004
The MAC Frame Filter register contains the filter controls for receiving frames. Some of the controls
from this register go to the address check block of the MAC, which performs the first level of address
filtering. The second level of filtering is performed on the incoming frame, based on other controls
such as Pass Bad Frames and Pass Control Frames.
Ethernet MAC Frame Filter (EMACFRAMEFLTR)
Base 0x400E.C000
Offset 0x004
Type RW, reset 0x0000.0000
16171819202122232425262728293031
VTFEreservedRA
RWRORORORORORORORORORORORORORORWType
0000000000000000Reset
0123456789101112131415
PRHUCHMCDAIFPMDBFPCFSAIFSAFHPFreserved
RWRWRWRWRWRWRWRWRWRWRWROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
Receive All
When this bit is set, the MAC Receiver module passes all received
frames, irrespective of whether they pass the address filter or not, to
the application. The result of the SA or DA filtering is updated (pass or
fail) in the corresponding bits in the Receive Status Word.
When this bit is clear, the Receiver module passes only those frames
to the application that pass the SA or DA address filter.
DescriptionValue
MAC RX module only passes frames that pass the SA or DA
address filter.
0
MAC RX module passes all received frames.1
0x0RWRA31
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.
0x0ROreserved30:17
VLAN Tag Filter Enable
DescriptionValue
MAC forwards all frames regardless of match status of VLAN
Tag.
0
MAC drops VLAN tagged frames that do not match VLAN tag
comparison.
1
0x0RWVTFE16
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.
0x0ROreserved15:11
June 18, 20141478
Texas Instruments-Production Data
Ethernet Controller

Texas Instruments TM4C1294NCPDT Specifications

General

Brand	Texas Instruments
Model	TM4C1294NCPDT
Category	Microcontrollers
Language	English