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Altera_Forum's avatar
Altera_Forum
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16 years ago

PIO or Custom Component?

I'm starting a design with the SOPC (NIOS) and I cant decide if I should put my signal processing functionality outside the SOPC (and use the PIO) OR create a custom component and put it in the SOPC....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I would go with a custom interface because...

a- it is not that difficult to implement

b- you have more flexibility as far as address map (or number of addressable IO)

c- you can implement bursting if you need to - I am not sure PIO can handle that

d- you can tell when the CPU is reading and writing without having to use interrupts or polling

hope this helps.