H/w-assisted XON/XOFF receive flow control (ie., when EFR[3:0] = xx10) stalls the transmitter when XOFF1 is received.
However, the transmitter does not restart if the flow control mode is subsequently disabled (eg., when EFR[3:0] = xx00).
AFAICT, there is no way to restart the transmitter (other than perhaps to completely reset the module).
Is this expected behavior?
