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Altera_Forum
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15 years ago

How to choose device : CPLD or FPGA ?

I want to implement a polynomial function to continuously process a digital temperature signal and output a variable based on such evaluation. What device to look out for ? CPLD or FPGA ? How ca...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Pipe-line the multiplication. You can multiply + accumulate. A MAX II device should do it.

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You mean 'serialise it'. Pipe-lining increases speed but doesn't decrease the amount of LUTs. A 32 by 8 serial multiply takes about 190 Logic Cells in MaxII. This is some 'old' AHDL code I did many years ago, I guess it can be improved upon though.

paawansharmas didn't indicate how fast he needs to run.