# NXH3675 @pramodhag @VishwaOzlo
Hello,
We are looking for improvements in the RF robustness between the audiohub and wasra based units (case and buds). One of the points that we came across is having asymmetric PHY for the CIS connection with M to S as 2M and S to M as 1M.
Just by changing this would not create the CIG as we connect to 2 buds. Please help us with other parameters that could be tuned to get a better performance with 1M PHY for Slave to Master.
Thanks.
Hello,
Hope you are doing well.
I apologize for the inconveniences, but NXH3675 and enablement (documentation, software and boards) are available for select customers with an approved NDA.
For more information about the chips, technology and any related support, could you please contact one of our distributors available in the Distributor Network|NXP? They can not only help you with the NDA process, but also help you check if you can get documentation and the support they can offer you.
I already sent you a private message.
Best regards,
Ana Sofia.