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Altera_Forum
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14 years ago

Triple Speed Ethernet (TSE) Performance

Hi, we are currently developing a system for a data logger. we are using Cyclone III FPGA to log the data from various sensors and store it on a memory. we are also using 10Mbps Ethernet to dow...
Altera_Forum's avatar
Altera_Forum
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14 years ago

The bottleneck on a Nios/TSE system is the TCP/IP stack. The TSE itself can be very fast and use a link at close to 100%, the SGDMA can be quite fast too, but the TCP/IP stack takes a lot of time to process each packet and this will determine the effective bandwidth.

The actual rate you can acheive depends a lot on your system, what's around it and what the CPU is doing, but with careful optimizations, something in the 50-80 MBits/s should be achievable (don't take my word for it though, test it!).

I'd definitely recommend to get a dev board and try. Any cheap board with the Marvel PHY chip will do.