21.13.1.38 prbs_test

Description

This Tcl command used in PRBS test to start, stop, reset the error counter and read the error counter value. PRBS data stream patterns are generated and checked by the internal SERDES block. These are used to self-test signal integrity of the device. You can switch the device through several predefined patterns.

Note:

prbs_test is renamed as smartbert_test in G5.

prbs_test [-deviceName device_name ] -start -serdes "integer value" \
          -lane "integer value" [-near] -pattern "PatternType"
prbs_test [-deviceName device_name ] -stop -serdes "integer value" \
          -lane "integer value"
prbs_test [-deviceName device_name ] -reset_counter \
          -serdes "integer value" -lane "integer value"
prbs_test [-deviceName device_name ] -read_counter \
          -serdes "integer value" -lane "integer value"

Arguments


Parameter	Type	Description
deviceName	string	Specifies device name. This parameter is optional if only one device is available in the current configuration or set for debug.
start	none	Starts the prbs test.
stop	none	Stops the prbs test.
reset_counter	none	Resets the prbs error count value to 0.
read_counter	none	Reads and prints the error count value.
SerDes	integer	SerDes block number. Must be between 0 and 4 and varies between dies.
lane	integer	SerDes lane number. Must be between 0 and 4.
near	none	Corresponds to near-end (on-die) option for prbs test. Not specifying implies off-die.
pattern	string	The pattern sequence to use for PRBS test. It can be one of the following: prbs7, prbs11, prbs23, or prbs31.


Return Type	Description
None	None

Error Codes


Error Code	Description
None	Parameter 'param_name' is not defined. Valid command formatting is 'prbs_test [-deviceName "device name"] [-start "TRUE \| FALSE"] [-stop "TRUE \| FALSE"] [-reset_counter "TRUE \| FALSE"] [-read_counter "TRUE \| FALSE"] [-pattern "Pattern type"] -serdes "integer value" -lane "integer value" [-near "TRUE \| FALSE"] '
None	Required parameter 'serdes' is missing.
None	serdes: Invalid argument value: 'serdes_value' (expecting integer value).
None	Required parameter 'lane' is missing.

Supported Families


SmartFusion 2
IGLOO 2
RTG4

Example

The following example starts PRBS test with the "prbs11" pattern:

prbs_test -start -serdes 1 -lane 0 -near -pattern "prbs11"

v2024.2