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designEngineer's avatar
designEngineer
Icon for Occasional Contributor rankOccasional Contributor
5 years ago
Solved

LVDS SERDES IP no DPA lock in simulation

Hi, I am trying to simulate an LVDS SERDES IP but don't seem to get DPA lock and with that never any data output. I am simulating with ModelSim Intel FPGA starter edition 2020.3. IP Settings: -...
  • designEngineer's avatar
    designEngineer
    5 years ago

    I figured out what the issue was:

    I used the example design simulation as a comparison and eventually saw that the example locks only after over 8 us. This seems way longer than what the lock time specification in the device datasheet is specifying.

    I then ran my own simulation for that long (before I had only run it up to 4 us as according to the lock time specification that is way more than should be needed) and it does also lock.

    I am posting this in case someone else ever runs into this issue.

    Thanks for the help along the way.

AminT_Intel's avatar
AminT_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Hello,

May I know your OPN and which version of Quartus are you using?

Thank you.

designEngineer's avatar
designEngineer
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

These are the libraries I am using if this helps:

vlog -sv -work altera C:/intelFPGA_pro/20.3/quartus/eda/sim_lib/altera_mf.v
vlog -sv -work altera C:/intelFPGA_pro/20.3/quartus/eda/sim_lib/mentor/cyclone10gx_atoms_ncrypt.v
vlog -sv -work altera C:/intelFPGA_pro/20.3/quartus/eda/sim_lib/cyclone10gx_atoms.v
vlog -sv -work altera C:/intelFPGA_pro/20.3/quartus/eda/sim_lib/altera_lnsim.sv

And these are the modules I am compiling for simulation:

vlog -work work ../src/ip/dpaSerdes/altera_lvds_core20_191/synth/altera_lvds_core20_pll.v
vlog -sv -work work ../src/ip/dpaSerdes/altera_lvds_core20_191/synth/altera_lvds_core20.sv
vlog -sv -work work ../src/ip/dpaSerdes/altera_lvds_core20_191/synth/dpaSerdes_altera_lvds_core20_191_qxd6ljq.sv
vlog -work work ../src/ip/dpaSerdes/altera_lvds_1950/synth/dpaSerdes_altera_lvds_1950_gu4p3ni.v
vlog -work work ../src/ip/dpaSerdes/synth/dpaSerdes.v