MAC frame filter
| PR | Promiscuous Mode When this bit is set, the Address Filter module passes all incoming frames regardless of its destination or source address. The SA/DA Filter Fails status bits of the Receive Status Word will always be cleared when PR is set. |
| HUC | Hash Unicast When set, MAC performs destination address filtering of unicast frames according to the hash table. When reset, the MAC performs a perfect destination address filtering for unicast frames, that is, it compares the DA field with the values programmed in DA registers. |
| HMC | Hash Multicast When set, MAC performs destination address filtering of received multicast frames according to the hash table. When reset, the MAC performs a perfect destination address filtering for multicast frames, that is, it compares the DA field with the values programmed in DA registers. |
| DAIF | DA Inverse Filtering When this bit is set, the Address Check block operates in inverse filtering mode for the DA address comparison for both unicast and multicast frames. When reset, normal filtering of frames is performed. |
| PM | Pass All Multicast When set, this bit indicates that all received frames with a multicast destination address (first bit in the destination address field is ‘1’) are passed. When reset, filtering of multicast frame depends on HMC bit. |
| DBF | Disable Broadcast Frames When this bit is set, the AFM module filters all incoming broadcast frames. When this bit is reset, the AFM module passes all received broadcast frames. |
| PCF | Pass Control Frames These bits control the forwarding of all control frames (including unicast and multicast PAUSE frames). Note that the processing of PAUSE control frames depends only on RFE of the Flow Control Register. 00 = MAC filters all control frames from reaching the application. 01 = MAC forwards all control frames except PAUSE control frames to application even if they fail the Address filter. 10 = MAC forwards all control frames to application even if they fail the Address Filter. 11 = MAC forwards control frames that pass the Address Filter. |
| RESERVED | Reserved. |
| RESERVED | Reserved. |
| HPF | Hash or perfect filter When set, this bit configures the address filter to pass a frame if it matches either the perfect filtering or the hash filtering as set by HMC or HUC bits. When low and if the HUC/HMC bit is set, the frame is passed only if it matches the Hash filter. |
| RESERVED | Reserved |
| RA | Receive all When this bit is set, the MAC Receiver module passes to the Application all frames received irrespective of whether they pass the address filter. The result of the SA/DA filtering is updated (pass or fail) in the corresponding bits in the Receive Status Word. When this bit is reset, the Receiver module passes to the Application only those frames that pass the SA/DA address filter. |