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Lambert's avatar
Lambert
Icon for Occasional Contributor rankOccasional Contributor
6 years ago
Solved

Why the lvds wave of true lvds tx channel is worse than the lvds wave of Emulated lvds tx when use true and Emulated lvds tx at the same time?

Hi everyone, I accounted one problem when I use true and emulated lvds tx at the same time. For Arria V GX FPGA, I use the same lvds_tx ip for Emulated and True lvds tx which serial factor is 2, ...
  • Lambert's avatar
    Lambert
    6 years ago

    The problem is that Emulated and True tx should use the same I/O standard ----- LVDS_E_3R.​

Rahul_S_Intel1's avatar
Rahul_S_Intel1
Icon for Frequent Contributor rankFrequent Contributor
6 years ago

Thanks for the acknowledgment and sharing the solution.

  • Lambert's avatar
    Lambert
    Icon for Occasional Contributor rankOccasional Contributor
    6 years ago

    Hi RSree,

    The above solution is wrong, because I don't insert terminating resistor when I monitor the lvds wave on the true lvds I/O, so it's okay to use lvds standard for the true lvds I/O interface.

    Lambert