Layer4_Address0

Because the Layer 3 and Layer 4 Address Registers are double-synchronized to the Rx 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 Layer 3 and Layer 4 Address Registers are written. For proper synchronization updates, you should perform the consecutive writes to the same Layer 3 and Layer 4 Address Registers after at least four clock cycles delay of the destination clock.
Module Instance Base Address Register Address
emac0 0xFF700000 0xFF700404
emac1 0xFF702000 0xFF702404

Offset: 0x404

Access: RW

Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

l4dp0

RW 0x0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

l4sp0

RW 0x0

Layer4_Address0 Fields

Bit Name Description Access Reset
31:16 l4dp0

When Bit 16 (L4PEN0) is reset and Bit 20 (L4DPM0) is set in Register 256 (Layer 3 and Layer 4 Control Register 0), this field contains the value to be matched with the TCP Destination Port Number field in the IPv4 or IPv6 frames. When Bit 16 (L4PEN0) and Bit 20 (L4DPM0) are set in Register 256 (Layer 3 and Layer 4 Control Register 0), this field contains the value to be matched with the UDP Destination Port Number field in the IPv4 or IPv6 frames.

 RW 0x0
15:0 l4sp0

Layer 4 Source Port Number Field When Bit 16 (L4PEN0) is reset and Bit 20 (L4DPM0) is set in Register 256 (Layer 3 and Layer 4 Control Register 0), this field contains the value to be matched with the TCP Source Port Number field in the IPv4 or IPv6 frames. When Bit 16 (L4PEN0) and Bit 20 (L4DPM0) are set in Register 256 (Layer 3 and Layer 4 Control Register 0), this field contains the value to be matched with the UDP Source Port Number field in the IPv4 or IPv6 frames.

 RW 0x0