AWR1843: Setting APLL and VCO bandwidths

FYI: We get an  'invalid sub block ID' when we try to use AWR_APLL_SYNTH_BW_CONTROL_SB.

Hello Stephen,

Yes , the  AWR_APLL_SYNTH_BW_CONTROL_SB API is supported in AWr1843. Are you using the mmwave SDK application to add this API?

Regards,
Vivek

Yes we are using the mmwave SDK.

OK thank you for clarifying that the API is not available. The APLL and VCOs are on the AWR1843 and they will have been tested as part of silicon verification so a method will be available for changing the bandwidths. Does anyone know how we can re-use those methods?

Hello Stephen,

Apologize for the confusion , please ignore my comment about it being supported in AWR1843. Jiten is right that its not supported on AWr1843.

All our testing and silicon verification has been done using the default settings of the APLL and SYNTH PLLs. Could you provide more details on what the is parameter that you are unable to meet using the default settings?

Regards,
Vivek

We wish to reduce the carrier phase noise to the minimum possible by setting the loop filters to their minimum bandwidth. Note that we are operating CW.