Altera cyclone V Technical Reference page 1412

Hard processor system
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cv_5v4
2016.10.28
Bit
15:0
addrhi
MAC_Address6_Low
The MAC Address6 Low register holds the lower 32 bits of the 7th 6-byte MAC address of the station.
Note that all MAC Address Low registers (except MAC Address0 Low) have the same format.
Module Instance
emac0
emac1
Offset:
0x74
Access:
RW
31
30
15
14
MAC_Address6_Low Fields
Bit
31:0
addrlo
MAC_Address7_High
The MAC Address7 High register holds the upper 16 bits of the 8th 6-byte MAC address of the station.
Because the MAC address registers are configured to be double-synchronized to the (G)MII clock
domains, the synchronization is triggered only when bits[31:24] (in little-endian mode) or Bits[7:0] (in
big-endian mode) of the MAC Address7 Low Register are written. For proper synchronization updates,
the consecutive writes to this Address Low Register should be performed after at least four clock cycles in
the destination clock domain. Note that all MAC Address High registers (except MAC Address0 High)
have the same format.
Ethernet Media Access Controller
Send Feedback
Name
This field contains the upper 16 bits (47:32) of the 7th
6-byte MAC address.
0xFF700000
0xFF702000
29
28
27
26
13
12
11
10
Name
This field contains the lower 32 bits of the 7th 6-byte
MAC address. The content of this field is undefined
until loaded by software after the initialization
process.
Description
Base Address
Bit Fields
25
24
23
22
addrlo
RW 0xFFFFFFFF
9
8
7
6
addrlo
RW 0xFFFFFFFF
Description
MAC_Address6_Low
Access
Register Address
0xFF700074
0xFF702074
21
20
19
18
5
4
3
2
Access
17-197
Reset
RW
0xFFFF
17
16
1
0
Reset
RW
0xFFFFF
FFF
Altera Corporation

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