SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
In all IR modes, when address checking is enabled, only frames intended for the device are written to the RX FIFO. This restriction avoids receiving frames not meant for this device in a multipoint infrared environment. It is possible to program two frame addresses that the UART IrDA receives, with the UART3.UART_XON1_ADDR1[7:0] XON_WORD1 and UART3.UART_XON2_ADDR2[7:0] XON_WORD2 bit fields.
Setting the UART_EFR[0] bit to 1 selects address1 checking. Setting the UART_EFR[1] bit to 1 selects address2 checking. Setting the UART_EFR[1:0] bit field to 0 disables all address checking operations. If both bits are set, the incoming frame is checked for private and public addresses.
If address checking is disabled, all received frames write to the RX FIFO.