gmacgrp_mac_address72_high
Register 624 (MAC Address72 High Register)
The MAC Address72 High register holds the upper 16 bits of the 73rd 6-byte MAC address of the station.
If the MAC address registers are configured to be double-synchronized to the (G)MII clock domains, then
the synchronization is triggered only when Bits[31:24] (in little-endian mode) or Bits[7:0] (in big-endian mode) of the MAC Address72 Low Register are written. For proper synchronization updates, consecutive writes to this MAC Address72 Low Register must be performed after at least four clock cycles in the destination clock domain.
Module Instance | Base Address | Register Address |
---|---|---|
i_emac_emac0 | 0xFF800000 | 0xFF8009C0 |
i_emac_emac1 | 0xFF802000 | 0xFF8029C0 |
i_emac_emac2 | 0xFF804000 | 0xFF8049C0 |
Size: 32
Offset: 0x9C0
Access: RW
Important: The value of a reserved bit must be maintained in software. When you modify registers containing reserved bit fields, you must use a read-modify-write operation to preserve state and prevent indeterminate system behavior.
Bit Fields | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
ae RW 0x0 |
reserved_30_16 RO 0x0 |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
addrhi RW 0xFFFF |
gmacgrp_mac_address72_high Fields
Bit | Name | Description | Access | Reset | ||||||
---|---|---|---|---|---|---|---|---|---|---|
31 | ae |
Address Enable When this bit is set, the address filter module uses the 73rd MAC address for perfect filtering. When this bit is reset, the address filter module ignores the address for filtering.
|
RW | 0x0 | ||||||
30:16 | reserved_30_16 |
Reserved |
RO | 0x0 | ||||||
15:0 | addrhi |
MAC Address72 [47:32] This field contains the upper 16 bits (47:32) of the 73rd 6-byte MAC address. |
RW | 0xFFFF |