18.104.22.168. Packet (File) Boundary
When streaming the DMA data, the packet (file) boundary is indicated by the SOF and EOF bits of the descriptor and corresponding sof and eof signals of the Avalon-ST interface. Channel interleaving is not supported. A channel switch on AVST interface can only happen on packet boundary
|Packet Boundary||Descriptor Field||AVST Source (H2D) Signal||AVST Sink (D2H) Signal|
|Start of Packet||SOF||h2d_st_sof_<n>_o||d2h_st_sof_<n>_i|
|End of Packet||EOF||h2d_st_eof_<n>_o||d2h_st_sof_<n>_i|
In Avalon-ST 1 port mode, a channel switch can only happen at packet boundary.
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