UART Registers
19.5.1.53 TX_DMA_THRESHOLD Register
TX DMA threshold value
The TX_DMA_THRESHOLD register is shown in
and described in
Figure 19-86. TX_DMA_THRESHOLD Register
31
6
5
0
Reserved
TX_DMA_THRESHOLD
R-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 19-85. TX_DMA_THRESHOLD Register Field Descriptions
Bit
Field
Value
Description
31-6
Reserved
0
Reserved.
5-0
TX_DMA_THRES
0
Used to manually set the TX DMA threshold level.
[2] SET_TX_DMA_THRESHOLD
HOLD
must be 1 and must be value + tx_trigger_level = 64 (TX FIFO size). If not, 64-tx_trigger_level will
be used without modifying the value of this register.
3549
SPRUH73H – October 2011 – Revised April 2013
Universal Asynchronous Receiver/Transmitter (UART)
Copyright © 2011–2013, Texas Instruments Incorporated