Weird Ethernet problem

Cris, I'm also using TSE but with Marvell 88E1111. I had sometimes losts in transmitting frames. I used Signaltap to identify the problem. The reason in my case was the transmit FIFO size. It was to small. I chaged the size from 1k to 4 kByte.

I checked the afull signal of the Transmit FIFO (tse_mac:the_tse_mac|altera_tse_mac:altera_tse_mac_inst|altera_tse_top_gen_host:top_gen_host_inst|altera_tse_top_w_fifo_10_100_1000:U_MAC_TOP|altera_tse_top_w_fifo:U_MAC|tx_a_full)

The backpreassure feature of the streaming interface from SGDMA to the TSE_MAC was obviously not working so the SGDMA hang-up.

May be you look at the control signals of tx and rx FIFOs with trigger on rxen in Signaltap.

Jens