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Altera_Forum
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16 years ago

Ethernet with DSP Dev. Kit Cyclone III (no NIOS)

Hi, I have the dsp development kit, cyclone iii edition (http://www.altera.com/products/devkits/altera/kit-cyc3-dsp.html). How can I use the Ethernet? In my altera > 80 > ip Direct...
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Altera_Forum
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16 years ago

You don't send the preamble or SFD to the TSE, it will add it automatically. You just send the Ethernet frame, starting with its header. Depending on the configuration, you may also have to add the 16-bits padding in front of the header if you enabled the option "Align packet headers to 32-bit boundaries".

You can have a look at the offload example on the Nios Wiki, they format some frames for the TSE.

waitrequest shouldn't be high when you are writitg or reading. If it still is, then you have a problem.

if the packet doesn't show in Wireshark it could be because it is badly formatted. Bad packets can be discarded by the Ethernet driver on the PC. Some drivers have options to disable this output.