HUYCUONGBK
Newbie level 4
in system.ucf have many things such as :
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NET sys_clk TNM_NET = "sys_clk";
TIMESPEC "TSSYSCLK" = PERIOD "sys_clk" 9.9 ns HIGH 50 %;
TIMESPEC "TSCPU" = PERIOD "cpu_clk" 2.998 ns HIGH 50 %;
NET sys_clk LOC = B13;
NET sys_clk IOSTANDARD = LVCMOS33;
inst "clocks_0/clocks_0/dcm3" LOC = DCM_X1Y0;
#inst "clocks_0/clocks_0/dcm4" LOC = DCM_X1Y1;
#inst "clocks_0/clocks_0/clk_bufg" LOC = BUFGMUX7P;
#inst "clocks_0/clocks_0/clkcpu_bufg" LOC = BUFGMUX6S;
NET PP_DIR TIG;
NET PP_DIR SLEW = SLOW;
NET PP_DIR DRIVE = 2;
NET fpga_led<0> LOC = G6; # PMC_CONN4_IO24 (TOP_YELLOW_LED_15) - MSB
NET fpga_led<1> LOC = L7; # PMC_CONN4_IO23 (TOP_YELLOW_LED_14)
NET fpga_led<2> LOC = G5; # PMC_CONN4_IO22 (TOP_YELLOW_LED_13)
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And more more.........I can't understand them . You can tell me mean of them . And when we use for our design.
If you have file.pdf about it , please send me. Thank you
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NET sys_clk TNM_NET = "sys_clk";
TIMESPEC "TSSYSCLK" = PERIOD "sys_clk" 9.9 ns HIGH 50 %;
TIMESPEC "TSCPU" = PERIOD "cpu_clk" 2.998 ns HIGH 50 %;
NET sys_clk LOC = B13;
NET sys_clk IOSTANDARD = LVCMOS33;
inst "clocks_0/clocks_0/dcm3" LOC = DCM_X1Y0;
#inst "clocks_0/clocks_0/dcm4" LOC = DCM_X1Y1;
#inst "clocks_0/clocks_0/clk_bufg" LOC = BUFGMUX7P;
#inst "clocks_0/clocks_0/clkcpu_bufg" LOC = BUFGMUX6S;
NET PP_DIR TIG;
NET PP_DIR SLEW = SLOW;
NET PP_DIR DRIVE = 2;
NET fpga_led<0> LOC = G6; # PMC_CONN4_IO24 (TOP_YELLOW_LED_15) - MSB
NET fpga_led<1> LOC = L7; # PMC_CONN4_IO23 (TOP_YELLOW_LED_14)
NET fpga_led<2> LOC = G5; # PMC_CONN4_IO22 (TOP_YELLOW_LED_13)
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And more more.........I can't understand them . You can tell me mean of them . And when we use for our design.
If you have file.pdf about it , please send me. Thank you
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