AFE7950: How to configure the phase shifters?

Prodigy 250 points

Part Number: AFE7950

Are separate phase shifters available for the individual NCOs, if present how to configure those.

over 2 years ago

0 AK over 2 years ago

Prodigy 250 points

A followup question is how to check channel-channel synchronization, and calibrate it.

0 David Chaparro over 2 years ago in reply to AK

TI__Genius 17891 points

Hi AK,

We are looking into this and should have an answer by Friday.

Regards,

David Chaparro

0 AK over 2 years ago in reply to David Chaparro

Prodigy 250 points

Any updates on this?

0 Vijayendra Varma Siddamsetty over 2 years ago in reply to AK

TI__Genius 10865 points

Hi AK,

NCO phase shift is programmed through 16-bit register fields. Register descriptions are given in SBAU337_Register_Set_13th_May_2020.pdf document available on AFE79xx secure folder. (This can accessed at www.ti.com/myseurcesoftware. If you don't have access, submit request at https://www.ti.com/licreg/docs/swlicexportcontrol.tsp?form_id=318147&prod_no=AFE79XX-HSC-DESIGN&ref_url=ASC_DCC_DC-HSC)

For TX in single band mode, NCO0 phase can be configured by programming TX_DUC_BAND0_MIXER1_NCO0_PHASE_OFFSET field.

Similarly, for RX in single band mode, NCO0 phase can be configured by RX_DDC_BAND0_NCO0_PHASE_OFFSET field. FB NCO0 phase can be configured by FB_DDC_NCO0_PHASE_OFFSET field.

Regards,

Vijay

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AFE7950: How to configure the phase shifters?