UART_SRT

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Interpret as UART_SRT

SRT=Val_0x0

Description

Shadow RCVR Trigger Register

Fields

SRT

This is a shadow field for the UART_FCR[RT] field. It is used to remove the burden of having to store the previously written value to the UART_FCR[RT] in memory and having to mask this value so that only the UART_FCR[RT] bit gets updated. SRT is used to select the trigger level in the Rx FIFO at which the Received Data Available interrupt will be generated. It also determines when the DMA_RX_REQ signal will be asserted when UART_FCR[DMAM] bit set to 1.

0 (Val_0x0): 1 character in FIFO

1 (Val_0x1): FIFO 1/4 full

2 (Val_0x2): FIFO 1/2 full

3 (Val_0x3): FIFO 2 less than full

Links

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