HD643303x Hitachi, HD643303x Datasheet - Page 375

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Figure 11-17 shows an example of SCI transmit operation.
Serial clock
Serial data
TDRE
TEND
TXI
request
Figure 11-17 Example of SCI Transmit Operation
TXI interrupt handler
writes data in TDR
and clears TDRE
flag to 0
Bit 0
Transmit
direction
Bit 1
1 frame
TXI
request
360
Bit 7
Bit 0
Bit 1
Bit 6
TEI
request
Bit 7