IWR6843AOP: calibration data interpretation/description

HS FAE Germany

Part Number: IWR6843AOP

Hello,

customer working on a Save/Restore mechanism for the calibration data. He didn't understood every calibration data. For example, an offset, a ratio, a LUT, etc. These are the data provided on page 74 of the mmWave Radar Interface Control Document Revision 2.19 - May 7, 2021 From mmwave_dfp_02_02_03_01 to find are. Attached you find a table of these parameters. Could you explain them in more detail.

Regards, Holger

over 3 years ago

0 Brennan Hartigan over 3 years ago

TI__Expert 8162 points

Hello,

Please see the app note on calibration, and let me know if there are additional questions. This is a good place to start:

https://www.ti.com/lit/an/spracf4a/spracf4a.pdf

Regards,

Brennan

+1 HS FAE Germany over 3 years ago in reply to Brennan Hartigan

TI__Mastermind 31625 points

Hello Brennan,

the App Note does not make it quite clear which data is exactly. For the end-of-line tests, they would like to read out the calibration data and check for plausibility. Specifically, they would like to see the results of the calibration of Rx gain boot time calibration, Rx IQ mismatch boot time calibration and phaseshifter calibration and interpret accordingly.

Regards, Holger

0 Brennan Hartigan over 3 years ago in reply to HS FAE Germany

TI__Expert 8162 points

Hi, Holger:

In order to get the boot time calibration results, you will need to issue these two comments after RF_INIT.

rlRfCalibDataStore and rlRfPhShiftCalibDataStore

file:///C:/ti/mmwave_sdk_03_05_00_04/packages/ti/control/mmwavelink/docs/doxygen/html/group___sensor.html#gaed333a050ab0ff53b5ab5a808e715a5c

file:///C:/ti/mmwave_sdk_03_05_00_04/packages/ti/control/mmwavelink/docs/doxygen/html/group___sensor.html#ga00f3f0bee9ac7b8f6e35b8df1658158d

You can also search for AWR_CAL_DATA_SAVE_SB and AWR_PHASE_SHIFTER_CAL_DATA_SAVE_SB in 1st generation radar interface control document in DPF release package.

Regards,

Brennan

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IWR6843AOP: calibration data interpretation/description