Figure 15.14 Example Of Sci Transmit Operation (Example With 8-Bit Data, Multiprocessor Bit, One Stop Bit) - Hitachi SH7751 Hardware Manual

Start
1
bit
Serial
0 D0 D1
data
TDRE
TEND
One frame
Figure 15.14 Example of SCI Transmit Operation (Example with 8-Bit Data,
Multiprocessor Serial Data Reception: Figure 15.15 shows a sample flowchart for
multiprocessor serial reception.
Use the following procedure for multiprocessor serial data reception after enabling the SCI for
reception.
Rev. 3.0, 04/02, page 614 of 1064
Multi-
Data Stop Start
proces-
sor bit bit bit
D7 1 1 0
Data written to SCTDR1
and TDRE flag cleared
to 0 by TXI interrupt
handler
MPBT bit cleared to 0, data
written to SCTDR1, and
TDRE flag cleared to 0 by
TEI interrupt handler
Multiprocessor Bit, One Stop Bit)
Multi-
Data Stop
proces-
sor bit bit
D0 D1 D7 0 1
TXI interrupt
request
Multi-
Start Data Stop
proces-
bit sor bit bit
0 D0 D1 D7 0
TEI interrupt
request
1
Idle state
(mark state)