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SCI Registers
609
SPRUI07–March 2020
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Serial Communications Interface (SCI)
10.14.2.9 SCITXBUF Register (Offset = 9h) [reset = 0h]
SCITXBUF is shown in Figure 10-19 and described in Table 10-15.
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Data bits to be transmitted are written to SCITXBUF. These bits must be rightjustified because the
leftmost bits are ignored for characters less than eight bits long. The transfer of data from this register to
the TXSHF transmitter shift register sets the TXRDY flag (SCICTL2.7), indicating that SCITXBUF is ready
to receive another set of data. If bit TXINTENA (SCICTL2.0) is set, this data transfer also causes an
interrupt.
Figure 10-19. SCITXBUF Register
15 14 13 12 11 10 9 8
RESERVED
R-0h
7 6 5 4 3 2 1 0
TXDT
R/W-0h
Table 10-15. SCITXBUF Register Field Descriptions
Bit Field Type Reset Description
15-8 RESERVED R 0h
Reserved
7-0 TXDT R/W 0h
Transmit data buffer
Reset type: SYSRSn
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