Receive Interspersing Capability

The MMSL receiver processes the received M-frames to determine whether the frame is destined for the eMAC or the pMAC and routes them appropriately.

Frames destined for the eMAC look like standard Ethernet frames and are passed un-modified to the eMAC.

Frames destined for the pMAC contain a modified SFD and this new SFD is also used to identify frame fragments in order to reconstruct a complete Ethernet frame for the pMAC.

If a frame for the pMAC is fragmented due to an express frame, the MMSL receiver and the pMAC receive path are halted while the express frame is routed to the eMAC. Once a continuation fragment is received, the MMSL receiver and pMAC receive path resumes operation.