Datasheet

Section 12 Serial Communication Interface (SCI)
Rev.7.00 Feb. 14, 2007 page 477 of 1108
REJ09B0089-0700
Figure 12.11 shows an example of SCI operation for transmission using the multiprocessor
format.
TDRE
TEND
0
1 frame
D0 D1 D7 0/11 0D0D1 D70/1 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 12.11 Example of SCI Transmit Operation
(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.