K66 : Legacy receive buffer descriptor

[koichisakagami]

Dear community,
We are checking a Legacy receive buffer descriptor.

In the manual K66P144M180SF5RMV2 Rev. 2, Table 50-33. Receive buffer descriptor field definitions
it is described that the Field "L" indicates the  "Last in frame".
       0 : The buffer is not the last in a frame.
       1 : The buffer is the last in a frame.

[Question]
       How do I recognize the first in a frame ?

Best Regards,
  Koichi Sakagami

[xiangjun_rong · Accepted solution]

Hi, Koichi,

I think the L flag is a IPv4 specific flag, the "Flags/Fragment offset" data in IP layer can determine the L bit in RxBD.

Hope it can help you

BR

XiangJun Rong