LM3S9B81 Datasheet, PDF (605/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Stellaris® LM3S9B81 Microcontroller
Bit/Field
2:0
Name
TXIFLSEL
Type
R/W
Reset
0x2
Description
UART Transmit Interrupt FIFO Level Select
The trigger points for the transmit interrupt are as follows:
Value Description
0x0 TX FIFO ≤ ⅛ full
0x1 TX FIFO ≤ ¼ full
0x2 TX FIFO ≤ ½ full (default)
0x3 TX FIFO ≤ ¾ full
0x4 TX FIFO ≤ ⅞ full
0x5-0x7 Reserved
Note:
If the EOT bit in UARTCTL is set (see page 600), the transmit
interrupt is generated once the FIFO is completely empty and
all data including stop bits have left the transmit serializer. In
this case, the setting of TXIFLSEL is ignored.
June 29, 2010
605
Texas Instruments-Advance Information