Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

TSE MAC catatonic

I've got a real head-scratcher of a problem with the Altera TSE MAC core. Here's the outline: * Altera/Terasic DE2-115 board, Cyclone IV-E FPGA * Full Quartus subscription, but no TSE license...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

There is an option in the MAC to add/remove two extra null bytes at the beginning of the packet. As the Ethernet header is 14 bytes, those two padding bytes make it 16 bytes instead, which is useful for some drivers that prefer to have the IP header aligned on 32-bits. Your alignment problem could come from there.