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Altera_Forum
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16 years ago

DCFIFO rdusedw and rdreq

Dear All, I've instantiated a DCFIFO (Cyclone II). The read and write clocks are not synchronized to each other. I'm using a signal synchronized to the rdclk as the rdreq which is approxim...
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Altera_Forum
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16 years ago

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But what I expect is that the rdusedw should get updated when something is 'read' from the read port, not at other clock cycles of rdclk.

Nagaraj

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The number of fifo words can change by either a write or read operation. The wrusedw is updated synchronised to wr clk, shortly the rdusedw is updated synchronised to rd clk irrespective of rdreq