TM4C1294NCPDT: How to config SPI？

Hi,  we use TM4C1294NCPDT control AWR2243 by SPI interface. About SPI configurations, i have a question:

About datasize:

     AWR2243 requires: SPI word length should be 16 bit (mmWave-Radar-Interface-Control.pdf 3.2.4).

    TM4C1294NCPDT mentions: The transmit and receive paths are buffered with internal, independent FIFO memories allowing up to eight 16-bit values in Legacy mode and 8-bit values in Advanced, Bi-, and Quad-modes. (TM4C1294NCPDT.pdf  17)

    So we should config SPI in legacy mode.

But about frame format:

   AWR2243 requires: SPI needs to be operated at Mode 0.(mmWave-Radar-Interface-Control.pdf 3.2.4)

   TM4C1294NCPDT mentions: SPO = 0 and SPH =0 is the only frame structure allowed for Advanced, Bi- and Quad-mode.(TM4C1294NCPDT.pdf  17.3.3)

   So we shouldn't config SPI in legacy mode.

   So there is a conflict about SPI configuration, how to config the SPI mode (legacy, Bi- ...)? 

   Does it mean that TM4C1294NCPDT SPI cannot support AWR2243?