TM4C1294KCPDT Datasheet, PDF (1506/1890 Pages) Texas Instruments – Tiva Microcontroller

Ethernet Controller
Register 20: Ethernet MAC Address 3 High (EMACADDR3H), offset 0x058
The Ethernet MAC Address 3 High (EMACADDR3H) register holds the upper 16 bits of the fourth
6-byte MAC address of the station.
Ethernet MAC Address 3 High (EMACADDR3H)
Base 0x400E.C000
Offset 0x058
Type RW, reset 0x0000.FFFF
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
AE
SA
MBC
reserved
Type RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ADDRHI
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit/Field
31
Name
AE
Type
RW
Reset
0x0
Description
Address Enable
Value Description
0 The address filter module ignores the third address for filtering.
1 The address filter module uses the third address for perfect
filtering.
30
SA
RW
0x0
Source Address
Value Description
0 When this bit is reset, the MAC Address3[47:0] is used to
compare with the DA fields of the received frame.
1 When this bit is set, the MAC Address3[47:0] is used to compare
with the SA fields of the received frame.
29:24
MBC
RW
0x0
Mask Byte Control
Mask control bits are provided for comparison of each of the MAC
Address bytes. When set high, the MAC does not compare the
corresponding byte of received DA or SA with the contents of MAC
Address1 registers. Each bit controls the masking of the bytes as follows:
■ Bit 29: ADDRHI [15:8] of EMACADDR3H register
■ Bit 28: ADDRHI [7:0] of EMACADDR3H register
■ Bit 27: ADDRLO [31:24] of EMACADDR3L register
■ Bit 26: ADDRLO [23:16] of EMACADDR3L register
■ Bit 25: ADDRLO [15:8] of EMACADDR3L register
■ Bit 24: ADDRLO [7:0] of EMACADDR3L register
A group of addresses (known as group address filtering) can be filtered
by masking one or more bytes of the address.
1506
Texas Instruments-Production Data
June 18, 2014