External Memory Interface Handbook Volume 3: Reference Material

ID 683841
Date 7/24/2019
Public
Document Table of Contents

16.5.2. Determining the Failing Calibration Stage for a Cyclone V or Arria V HPS SDRAM Controller

To determine the failing calibration stage, you must turn on the debug output report by setting the RUNTIME_CAL_REPORT option to 1 in the sequencer_defines.h file, located in the hps_isw_handoff directory.

If calibration fails, the following statements are printed in the debug output report:

SEQ.C: Calibration Failed
SEQ.C: Error Stage : <Num>
SEQ.C: Error Substage: <Num>
SEQ.C: Error Group : <Num>

To determine the stage and sub-stage, open the sequencer.h file in the hps_isw_handoff directory and look for the calibration defines:

/* calibration stages */
#define CAL_STAGE_NIL 0
#define CAL_STAGE_VFIFO 1
#define CAL_STAGE_WLEVEL 2
#define CAL_STAGE_LFIFO 3
#define CAL_STAGE_WRITES 4
#define CAL_STAGE_FULLTEST 5
#define CAL_STAGE_REFRESH 6
#define CAL_STAGE_CAL_SKIPPED 7
#define CAL_STAGE_CAL_ABORTED 8
#define CAL_STAGE_VFIFO_AFTER_WRITES 9
/* calibration substages */
#define CAL_SUBSTAGE_NIL 0
#define CAL_SUBSTAGE_GUARANTEED_READ 1
#define CAL_SUBSTAGE_DQS_EN_PHASE 2
#define CAL_SUBSTAGE_VFIFO_CENTER 3
#define CAL_SUBSTAGE_WORKING_DELAY 1
#define CAL_SUBSTAGE_LAST_WORKING_DELAY 2
#define CAL_SUBSTAGE_WLEVEL_COPY 3
#define CAL_SUBSTAGE_WRITES_CENTER 1
#define CAL_SUBSTAGE_READ_LATENCY 1
#define CAL_SUBSTAGE_REFRESH 1

For details about the stages of calibration, refer to Calibration Stages in Functional Description - UniPHY.

Did you find the information on this page useful?

Characters remaining:

Feedback Message