Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X 数据表
产品代码
DK-TM4C129X
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.
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
Offset 0x004
Type RW, reset 0x0000.0000
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
VTFE
reserved
RA
RW
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PR
HUC
HMC
DAIF
PM
DBF
PCF
SAIF
SAF
HPF
reserved
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
Description
Reset
Type
Name
Bit/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.
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.
to the application that pass the SA or DA address filter.
Description
Value
MAC RX module only passes frames that pass the SA or DA
address filter.
address filter.
0
MAC RX module passes all received frames.
1
0x0
RW
RA
31
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.
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x0
RO
reserved
30:17
VLAN Tag Filter Enable
Description
Value
MAC forwards all frames regardless of match status of VLAN
Tag.
Tag.
0
MAC drops VLAN tagged frames that do not match VLAN tag
comparison.
comparison.
1
0x0
RW
VTFE
16
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.
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x0
RO
reserved
15:11
1669
December 13, 2013
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Tiva
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TM4C129XNCZAD Microcontroller