Block Ram clocks

Oct 22, 2003 2 Replies

I'm using block rams to create FIFOs in Virtex II device.And mapper report problem with using clock, that drives these block rams:


WARNING:LIT:175 - Clock buffer is designated to drive clock loads. BUFGMUX symbol "clock_reset_clk80_bufg" (output signal=clk) has a mix of clock and non-clock loads. Some of the non-clock loads are (maximum of 5 listed): Pin CLKA of txfifo1_bram3 Pin CLKB of txfifo1_bram3 Pin CLKA of txfifo1_bram2 Pin CLKB of txfifo1_bram2 Pin CLKA of txfifo1_bram1


I'm a little suprised, because I thought that these ARE clock loads. Should I worry about that? Any other comments?


-- Robert Pudlik



I forgot: I'm using ISE5.2 with the latest service pack, and XST for synthesis.

RobertP wrote:

And I get the same warning for clocked multiplier blocks. I suspect the mapper is goofy.

Barry Brown

BUFGMUX

listed):

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