gmacgrp_mac_address39_high 

         <b> Register 558 (MAC Address39 High Register) </b>

The MAC Address39 High register holds the upper 16 bits of the 40th 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 Address40 Low Register are written. For proper synchronization updates, consecutive writes to this MAC Address40 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 0xFF8008B8
i_emac_emac1 0xFF802000 0xFF8028B8
i_emac_emac2 0xFF804000 0xFF8048B8

Size: 32

Offset: 0x8B8

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_address39_high Fields

Bit Name Description Access Reset
31 ae 
Address Enable

When this bit is set, the address filter module uses the 40th MAC address for perfect filtering. 
When this bit is reset, the address filter module ignores the address for filtering.
Value Description
0x0 DISABLED
0x1 ENABLED
RW 0x0
30:16 reserved_30_16 
Reserved
 RO 0x0
15:0 addrhi 
MAC Address39 [47:32]

This field contains the upper 16 bits (47:32) of the 40th 6-byte MAC address.
 RW 0xFFFF