Forum Discussion

Honored Contributor

14 years ago

Max Gpio mhz for cyclone II, III, IV ?

Does anyone know the max gpio speed for the cyclone II, III, and IV ? I know the ram speed for the II is close to 240 mhz and the IV is close to 450 mhz, i dont know the gpio speed for any tho...

Altera_Forum

Honored Contributor

14 years ago

The FPGA itself is certainly capable of such speeds, but you won't be able to reach it by controlling the SSD in software and PIOs. You will need a dedicated controller with DMA support, such as this one (http://www.cast-inc.com/ip-cores/storage/ataif/cast_ataif-a.pdf).

There is also an opensource core at opencores (http://opencores.org/project,ata) but IIRC only the first one (PIO mode) is fully stable.

Forum Discussion

Max Gpio mhz for cyclone II, III, IV ?

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