21.13.1.35 optimize_dfe

Description

This Tcl command supports the Optimize DFE (decision feedback equalizer) feature in SmartDebug.

optimize_dfe [-deviceName "device name"] \
             -dfe_algorithm {type of dfe algorithm} \
             -lane {lane(s) configured in the design}

Arguments


Parameter	Type	Description
deviceName	script	Optional user-defined device name. The device name is not required if there is only one device in the current configuration, or a device has already been selected using the set_debug_device command.
dfe_algorithm	script	This command executes Dfe Algorithm with type of dfe algorithm and lanes as input. Algorithm selection has two options: software_based -executes DfeSs.tcl script xcvr_based -executes internal Dfe Auto Calibration. This argument is mandatory.
lane	script	List of lane(s) configured in the design. This argument is mandatory.


Return Type	Description
None	None

Error Codes


Error Code	Description
None	Parameter 'param_name' is not defined. Valid command formatting is'optimize_dfe [-deviceName "device name"] -lane "[Physical Lane Name]+" -dfe_algorithm "Dfe Algorithm Selection"'.
None	Parameter 'deviceName' has illegal value.
None	Parameter 'lane' has illegal value.
None	Required parameter 'lane' is missing.
None	Required parameter 'dfe_algorithm' is missing.
None	Parameter 'dfe_algorithm' has illegal value.
None	Optimize DFE: dfe_algorithm has invalid option. Possible options: software_based, xcvr_based.
None	Execute DFE Calibration: Execute DFE calibration falied.
None	Optimize DFE: Transceiver Physical Lanes Q1_LANE0 are configured in CDR Mode.XCVR_BASED Dfe Algorithm is valid for DFE configured lanes only.

Supported Families


PolarFire
PolarFire SoC*

Example

This example oftimizes dfe for lane "Q2_LANE0" using software_based algorithm.

optimize_dfe -lane {"Q2_LANE0"} -dfe_algorithm {software_based}

This example oftimizes dfe for lane "Q2_LANE0" using xcvr_based algorithm.

optimize_dfe -lane {"Q2_LANE0"} -dfe_algorithm {xcvr_based}

This example oftimizes dfe for lane "Q2_LANE0" and “Q0_LANE0” using xcvr_based algorithm.

optimize_dfe -lane {"Q2_LANE0" “Q0_LANE0”} -dfe_algorithm {xcvr_based}