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Altera_Forum
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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's avatar
Altera_Forum
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14 years ago

If you are talking about a PIO on a system with a Nios CPU it depends on many factors, mostly the CPU type, its frequency, the memory type and interface connected to the CPU instruction master port, the amount of cache and the kind of software environment you will build your application upon.

If you really want high speed input/output you should consider using a DMA instead of a PIO component.