CC2755R10: Tune values for the 48 MHz X-tal

Part Number: CC2755R10
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

I am seeing a discrepancy between frequency offset off the carrier using SmartRF studio V8 and btool.

Measuring the carrier

SmartRF studio the freq. offset is +4.8 kHz

 btool  freq. offset result is              -29 kHz

In Smart RF the setting for Q1 = 33 Q2 = 33

from the SDK simplelink_lowpower_f3_sdk_9_12_00_19  

"LP_EM_CC2755R10_BG.syscfg.json"  file the setting is 

"HFXT" : {
            "definition": "/ti/boards/components/crystal_tz3908aaa043.json",
            "settings": {
                "overrideCapArray": true,
                "hfxtCapArrayQ1" : 33,
                "hfxtCapArrayQ2" : 33
            }

To have the same freq. offset in SmartRF the setting for Q1 = 38, Q2 = 37.

Best Regards

Flemming