I am using a siliconwave bluetooth based on siw3500 chip. It is an UART based device.

I am able to initialise the UART using hciattach upto baud rates of 115200 bps.But Iam not

able to initialise it beyond 115200 .., that is for eg. 230400 bps....Can anyone suggest me

what could be the problem at higher baud rates ?