I am a little confused by the datasheet. page 34 says its possible to switch from tx to rx by way of FS_ON state. it then says that you must go to IDLE state to modify the FSDIV register. Is it ok to switch rx/tx states from FS_ON state since the FSDIV register only changes by 1Mhz? Or, is that statment only true if the radio is configured as Alternate TX IF setting which means the Tx and Rx use the same FSDIV register values?