26.2.4.1 Synchronous Steering Mode
In Synchronous Steering mode (MODE =
                ‘b001), the changes to steering selection
            registers take effect on the next rising edge of CWG Data (see the figure below). In
            Synchronous Steering mode, the output will always produce a complete waveform.
Important: Only the STRx bits are synchronized; the OVRx
            bits are not synchronized.
        ‘b001)