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hi,
i get a problem working with sdc, i think it's only a syntax one. my top is :
u1 : enet_rx_clk_pllport map(
inclk0 => enet_rx_clk,
c0 => enet_rx_clk_270deg,--0
c1 => enet_tx_clk_mac, --90
c2 => enet_tx_clk_phy,--180
locked => open
);
and sdc is like :
create_clock -period 8 -name "ENET0_RX_CLK"
derive_pll_clocks
create_generated_clock -name tx_data_clock -source
create_generated_clock -name pll_output_tx -phase 90 -source
At fitter, it says : Warning (332174): Ignored filter at test_0.sdc(25): test_0|u1|c0 could not be matched with a pin I hope someone could help me, cheers
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Hi,
usually you don't need constrain the generated clocks if you use "derive_pll_clocks". To get the proper syntax I'm using Timequest. Just start Timequest and create the timing netlist. Then type at TCL console "derive_pll_clocks". Now you will see the correct commands. Jens- Mark as New
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ok thank you, ill try this
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