本文主要是介绍vivado XDC / ISE UCF 约束文件,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
1、CLOCK_DEDICATED_ROUTE(不打算使用板子上的晶振)
vivado XDC:set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets XXX]
set_property CLOCK_DEDICATED_ROUTE FALSE [get_nets {clk_wiz_0/inst/clk_in1_clk_wiz_0}]
ISE UCF:PIN "inst_clkgen/clkout1_buf.O" CLOCK_DEDICATED_ROUTE = FALSE;
2、IOSTANDARD
vivado XDC:set_property -dict{PACKAGE_PIN AD9 IOSTANDARD DIFF_HSTL_II_18} [get_ports Rcvclk_pll_N];
ISE UCF:NET "Rcvclk_pll_N" IOSTANDARD = DIFF_HSTL_II_18 | LOC = AD9;
2、DIFF_TERM
vivado XDC:set_property -dict{PACKAGE_PIN AB11 IOSTANDARD LVDS DIFF_TERM TRUE} [get_ports CLK_184M_P]
ISE UCF:NET "ADC2_DAB_N" IOSTANDARD = LVDS | LOC = AB4 | DIFF_TERM=TRUE;
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