U1RBR Clear

What do you mean by clearing U1RBR register?

U1RBR register is a read only register which contains the data received by the UART FIFO.By reading the U1RBR register we can clear the flags which was related to U1LSR.

What do you mean by clearing U1RBR register?

U1RBR register is a read only register which contains the data received by the UART FIFO.By reading the U1RBR register we can clear the flags which was related to U1LSR.