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AWR1642: AWR1642BOOST connect to MCU

Part Number: AWR1642

I updated lab0011-pplcount binary code on AWR1642BOOST, it can work when I connect the board to PC by using USB port (XDS110 Class Application/User UART and XDS110 Class Auxiliary Data Port). My target is to configure AWR1642BOOST from another MCU UART port by following setting, but no any response message when I send configuration data from MCU UART to AWR1642BOOST RS232RX. 

Do I miss some HW/SW setting for enabling AWR1642BOOST UART port?