circuit
Full Member level 2
Hello, I bought a Analog devices board with xilinx fpga which is a deserialzer, used with their A/D eval boards And they gave me the code on the fpga as well. It had 3 modules and one UCF file, .npl file ( along with the .bit and .mcs file which were loaded) Now I opened this project in ISE 7.1 and it told me that it automatically converts the npl to ise format with this new version. I just did a very crude test after I opened the project( it contained the 3 modules and the ucf file) I hit "Generate programming file" and it generated the .bit file but I found there are 4 failed constraints ?
*TS_ADI_Clocking_inst_rxclkdcm_p=PERIODTIMEGRP"ADI_Clocking_inst_rxclkdcm_p" TS_dco_p PHASE 0.465 ns HIGH 50% 2.380ns 2.514ns 1
*TS_ADI_Clocking_inst_rxclkdcm_n=PERIODTIMEGRP "ADI_Clocking_inst_rxclkdcm_n" TS_dco_p PHASE 1.656 ns HIGH 50% 2.380ns 2.454ns 1
*OFFSET = IN 0 ns VALID 1.19 ns BEFORE COMP "dco_p" 0.000ns 1.500ns 3
*TIMEGRP "negedge_input_pads" OFFSET = IN-1.19 ns VALID 1.19 ns BEFORE COMP "dco_p" TIMEGRP rxclk_n_grp -1.190ns 0.051ns 3
What does this mean in general...I am kinda new and am just trying to learn what goes on that chip and how its done. I am trying to write a testbench and see the simulation in varios stages. so can anybody give me like a short how/what-to-do on this ? thanks much
*TS_ADI_Clocking_inst_rxclkdcm_p=PERIODTIMEGRP"ADI_Clocking_inst_rxclkdcm_p" TS_dco_p PHASE 0.465 ns HIGH 50% 2.380ns 2.514ns 1
*TS_ADI_Clocking_inst_rxclkdcm_n=PERIODTIMEGRP "ADI_Clocking_inst_rxclkdcm_n" TS_dco_p PHASE 1.656 ns HIGH 50% 2.380ns 2.454ns 1
*OFFSET = IN 0 ns VALID 1.19 ns BEFORE COMP "dco_p" 0.000ns 1.500ns 3
*TIMEGRP "negedge_input_pads" OFFSET = IN-1.19 ns VALID 1.19 ns BEFORE COMP "dco_p" TIMEGRP rxclk_n_grp -1.190ns 0.051ns 3
What does this mean in general...I am kinda new and am just trying to learn what goes on that chip and how its done. I am trying to write a testbench and see the simulation in varios stages. so can anybody give me like a short how/what-to-do on this ? thanks much