UART Registers
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19.5.1.42 Transmit Frame Length Low Register (TXFLL)
The transmit frame length low register (TXFLL) and the TXFLH register hold the 13-bit transmit frame
length (expressed in bytes). TXFLL holds the LSBs and TXFLH holds the MSBs. The frame length value is
used if the frame length method of frame closing is used. The transmit frame length low register (TXFLL)
is shown in Figure 19-75 and described in Table 19-74.
Figure 19-75. Transmit Frame Length Low Register (TXFLL)
15 8 7 0
Reserved TXFLL
R-0 W-0
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 19-74. Transmit Frame Length Low Register (TXFLL) Field Descriptions
Bit Field Value Description
15-8 Reserved 0 Reserved.
7-0 TXFLL 0-FFh LSB register used to specify the frame length.
19.5.1.43 Transmit Frame Length High Register (TXFLH)
The transmit frame length high register (TXFLH) and the TXFLL register hold the 13-bit transmit frame
length (expressed in bytes). TXFLL holds the LSBs and TXFLH holds the MSBs. The frame length value is
used if the frame length method of frame closing is used. The transmit frame length high register (TXFLH)
is shown in Figure 19-76 and described in Table 19-75.
Figure 19-76. Transmit Frame Length High Register (TXFLH)
15 5 4 0
Reserved TXFLH
R-0 W-0
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 19-75. Transmit Frame Length High Register (TXFLH) Field Descriptions
Bit Field Value Description
15-5 Reserved 0 Reserved.
4-0 TXFLH 0-1Fh MSB register used to specify the frame length.
3540
Universal Asynchronous Receiver/Transmitter (UART) SPRUH73H–October 2011–Revised April 2013
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