Datasheet

Section 14 Serial Communication Interface (SCI)
Rev.6.00 Sep. 27, 2007 Page 643 of 1268
REJ09B0220-0600
Figure 14.11 shows an example of SCI operation for transmission using the multiprocessor
format.
TDRE
TEND
0
1 frame
D0 D1 D7 0/1 1 0 D0 D1 D7 0/1 1
1 1
DataStart
bit
Multi-
proces-
sor
bit
Stop
bit
Start
bit
Data
Multi-
proces-
sor bit
Stop
bit
TXI interrupt
request generated
Data written to TDR
and TDRE flag cleared to
0 in TXI interrupt handling
routine
TEI interrupt
request generated
Idle state
(mark state)
TXI interrupt
request generated
Figure 14.11 Example of SCI Transmit Operation
(Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
Multiprocessor serial data reception: Figure 14.12 shows a sample flowchart for
multiprocessor serial reception.
The following procedure should be used for multiprocessor serial data reception.