Is it possible to sync PA and play music via unicast CIS at the same time?

RE: Is it possible to sync PA and play music via unicast CIS at the same time?

SwRa — Mon, 27 Oct 2025 12:49:04 GMT

Hello,

It is suggested that you take a look at this documentation: https://docs.nordicsemi.com/bundle/ncs-3.0.2/page/nrfxlib/softdevice_controller/doc/scheduling.html which shows information on scheduling priority.

Regards,

Swathy

RE: Is it possible to sync PA and play music via unicast CIS at the same time?

chelalv — Fri, 24 Oct 2025 08:03:45 GMT

Thanks for your reply, Looking forward to more detailed updates

RE: Is it possible to sync PA and play music via unicast CIS at the same time?

SwRa — Thu, 23 Oct 2025 12:33:03 GMT

Hello,

Yes, PA sync and extended advertising scanning can affect ACL/CIS ISO timing if not carefully scheduled, and there is no explicit way to prioritize ACL/CIS over PA sync in the current stack. Careful configuration of intervals and duty cycles can help, but some level of conflict is possible when running both roles simultaneously on the nRF5340 Audio DK.

I will discuss this with the experts in LE Audio and update here.

Regards,

Swathy