CCS: The serial port usage problem of TMS570LS31X series Demo board

Tool/software: Code Composer Studio

hello，

 I want use the serial port of the demo board，I have done the following work：

1. Use HALCoGen software to generate the underlying hardware driver code, enable SCI2 driver, enable SCI/LIN Port input and output signals

2. Check the schematic diagram, connect LINRX and LINTX and ground signal,Do I need to use USB to 232 interface or USB to 485 interface connection？