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KCMurphy's avatar
KCMurphy
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

LPDDR3 Calibration sometimes not completing Arria 10

We have a board design with an Arria 10 and a single Micron LPDDR3 IC. Mostly it works. But on occasion, the device comes out of reset with the EMIF PLLs locked, but neither cal_success nor cal_fai...
AdzimZM_Altera's avatar
AdzimZM_Altera
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi KCMurphy,


Is the EMIF IP has been setup with correct parameter by referring to memory datasheet and board simulation?


Is the design has fully constrained?


Are you able to see similar behavior with other board if applicable?


Regards,

Adzim


KCMurphy's avatar
KCMurphy
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

We believe this was a power sequencing issue. If we hold the EMIF interface in reset until our controller releases it, the calibration proceeds correctly.