If you are wanting to configure a peripheral register as a DMA source or destination address, you want to use the "Manual" or "Variable/Function Name" options. Please see the explanation on the thread ...
I asked how to make SCI break last time and TI expert told me that I can make SCI break with GPIO control. In data sheet : SCI is low for 9.625 bit following a missing stop bit. (Start 1bit + data ...