Datasheet

Section 15 Serial Communication Interface (SCI and IrDA)
Rev. 3.00 Mar 21, 2006 page 388 of 788
REJ09B0300-0300
Transmitting
station
Receiving
station A
Receiving
station B
Receiving
station C
Receiving
station D
(ID = 01) (ID = 02) (ID = 03) (ID = 04)
Serial communication line
Serial
data
ID transmission
cycle =
receiving station
specification
Data transmission cycle =
Data transmission to
receiving station specified by ID
(MPB = 1) (MPB = 0)
H'01
H'AA
Legend:
MPB: Multiprocessor bit
Figure 15.10 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
15.5.1 Multiprocessor Serial Data Transmission
Figure 15.11 shows a sample flowchart for multiprocessor serial data transmission. For an ID
transmission cycle, set the MPBT bit in SSR to 1 before transmission. For a data transmission
cycle, clear the MPBT bit in SSR to 0 before transmission. All other SCI operations are the same
as those in asynchronous mode.