PCI Express Avalon-ST Valid Data Bytes

Thanks for your reply. I've used Mindshare books in the past. I'll check it out.

There is, in Altera's documentation, mention of deprecated signals rx_st_be[31:0] that used to be used for the purpose of determining byte validity. Altera's doc says that the same information can be obtained by "decoding the FBE and LBE fields in the TLP header." However, as I pointed out, the First BE and Last BE fields in the header are only 4 bits, so, unlike with deprecated rx_st_be, I don't see how one can use FBE and LBE to determine the validity of 32 bytes.