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AM6442: About resetting UART interrupt

Part Number: AM6442

About the TRM chapter "12.1.5.4.5.1.1 UART Interrupts".
"Table 12-623. UART Mode Interrupts" describes how to reset interrupts.
Will these interrupts be reset even if the FIFO is cleared?

When I wrote 1 to RX_FIFO_CLEAR of UART_FCR Register to clear RxFIFO, IT_TYPE (Rx time-out) of UART_IIR_UART was not cleared.

Is "Rx time-out" not cleared because clearing the FIFO does not clear the "Time-Out Counter"?
Is "Rx time-out" cleared only when UART_RHR is read?