How to configure the RL78 to use a certain baud rate for the rBLE HOST connection

I am writing an RL78 based peripheral using the modem mode. That means the BTLE application interfaces to the RL78 through the rBLE HOST using a serial connection. I have projects that build on both sides and are ready to link; except the baud rates are not set properly. The HOST side is set at 4800 baud and the RL78 side is set at ... well I don't know because I don't know how to set it. Note that I am not interested in using an independent serial port but the serial connection set up by the Renesas RL78 stack for rBLE HOST communication. So the code is written but I do not know how to configure the baud rate.

Anyone know how to do this or what document might exist that explains it?

 

Thanks.