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SMS's avatar
SMS
Icon for New Contributor rankNew Contributor
7 years ago
Solved

Simulating Soft LVDS Tx and Rx IP cores

I am trying to simulate the LVDS Tx and Rx IP cores, but when I run RTL simulation, Modelsim gives an error: Failed to open design unit file "C:/Users/Sarmad/Documents/Altera/LVDS_Test/LVDS_Rx.vo" ...
  • AnandRaj_S_Intel's avatar
    AnandRaj_S_Intel
    7 years ago

    ​Hi,

    Yes, you are correct I have used ALTLVDS IP core.

    I have also used Soft LVDS Intel FPGA IP.

    Steps:

    1. generated Soft LVDS Intel FPGA IP tx & rx individually
    2. Integrated it into top level HDL file.
    3. Generated a combined, version-independent simulation script file including both IP's using ip-setup-simulation command.Attached images
    4. Create a simple scrip to set top level HDL file and simulate.

    Example:

    set QSYS_SIMDIR C:/Users/anandr1x/Desktop/softlvdssim
source mentor/msim_setup.tcl 
 
#dev_com
# Override the top-level name (so that elab is useful)
set TOP_LEVEL_NAME softlvdssim 
# Compile the standalone IP.
com
# Compile the user top-level vlog -sv ../../top.sv
vlog -sv softlvdssim.v
# Elaborate the design.
elab

    Let me know if this has helped resolve the issue you are facing or if you need any further assistance.

    Regards

    Anand

AnandRaj_S_Intel's avatar
AnandRaj_S_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

I have just used LVDS Tx and Rx IP initiated in top level HDL file and simulated with out any error.

  1. order in which IP's are instantiated will not cause any problem.
  2. In modelsim, i have just compiled top level, Tx & Rx HDL files.
  3. vsim -L altera_mf_ver -L altera_mf work.lvdsrtsim

Hope it helps.

Let me know if this has helped resolve the issue you are facing or if you need any further assistance.

Regards

Anand

SMS's avatar
SMS
Icon for New Contributor rankNew Contributor
7 years ago

If I am not mistaken did you use ALTLVDS IP core? And isn't it different from the "Soft LVDS Intel FPGA IP"? And I have tried again multiple times but the error persists.