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Altera_Forum
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16 years ago

Pipelining a recursive equation

Dear Forum, I am working on a polyphase filter implementation, which is built up from a number of recursive equations such as: A(n) = alpha*[X(n-1)-A(n-1)] + beta*[X(n)-A(n-2)] + X(n-2) ...
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Altera_Forum
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16 years ago

500 Mhz is possible only with a short data path register - mult/add - register. Practical designs typically require more, e.g. a filter with saturated arithmetic. In the present case, I don't expect an advantage from a higher clock than 100 MHz, as long as you can't multiplex arithmetic functions to be used sequentially.