LM3S1636_13 Datasheet, PDF (448/655 Pages) Texas Instruments – Stellaris Microcontroller

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Universal Asynchronous Receivers/Transmitters (UARTs)
Bit/Field
4
3:0
Name
RXIM
reserved
Type
R/W
RO
Reset
0
0x00
Description
UART Receive Interrupt Mask
On a read, the current mask for the RXIM interrupt is returned.
Setting this bit to 1 promotes the RXIM interrupt to the interrupt controller.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
448
July 24, 2012
Texas Instruments-Production Data