HD6432345 Datasheet, PDF (470/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

Figure 12.11 shows an example of SCI operation for transmission using the multiprocessor
format.
Start
1 bit
0 D0 D1
Data
Multi-
proce-
ssor Stop
bit bit
Start
bit
Data
Multi-
proces- Stop
sor bit bit 1
D7 0/1 1 0 D0 D1
D7 0/1
1 ^{Idle state}
(mark state)
TDRE
TEND
TXI interrupt
request generated
Data written to TDR
and TDRE flag cleared to
0 in TXI interrupt service
routine
TXI interrupt
request generated
1 frame
TEI interrupt
request generated
Figure 12.11 Example of SCI Operation in Transmission
(Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
• Multiprocessor serial data reception
Figure 12.12 shows a sample flowchart for multiprocessor serial reception.
The following procedure should be used for multiprocessor serial data reception.
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