When two pieces of AWR1243P cascade, FMCW_SYNCOUT produced by the main chip is divided into two paths through the power splitter, and then FMCW_SYNCIN of the master and slave chip is entered.FMCW_SYNCIN must enter the same pin?That is, both master and slave chips are input by FMCW_SYNCIN1 or both are input by FMCW_SYNCIN2.For easy wiring, can the main chip select FMCW_SYNCIN1 input and the slave chip select FMCW_SYNCIN2 input?