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Figure 11-17 shows an example of SCI transmit operation.
Serial clock
Serial data
TDRE
TEND
TXI
request
376
Transmit
direction
Bit 0
Bit 1
TXI interrupt handler
writes data in TDR
and clears TDRE
flag to 0
1 frame
Figure 11-17 Example of SCI Transmit Operation
Bit 7
Bit 0
Bit 1
TXI
request
Bit 6
Bit 7
TEI
request
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