Forum Discussion

Dzar's avatar
Dzar
Icon for Occasional Contributor rankOccasional Contributor
7 years ago
Solved

Reading HPS EMAC counters not reliable

UPDATE: Seems EMAC1 is looking OK. The problem, there, was understanding what's meant by "good" in some cases. But EMAC0 looks like it's almost not counting anything. It's quite sporadic when I see a...
  • Dzar's avatar
    Dzar
    7 years ago

    Final answer... Set the PR bit, not the RA bit. One does not need both, but the PR bit is the correct one if one wants counters to work. No documentation on this, sadly, but that's what we've deduced.

FawazJ_Altera's avatar
FawazJ_Altera
Icon for Frequent Contributor rankFrequent Contributor
7 years ago

Hello Dzar,

this is not the expected behavior. By default, the counter register should reflect the number of frames, whether good or bad.

Let me investigate about these counters. I will post my feedback once I find more information about it,

thanks