Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)
Rev.7.00 Mar. 18, 2009 page 735 of 1136
REJ09B0109-0700
Transmitting
station
Receiving
station A
(ID = 01)
Receiving
station B
(ID = 02)
Receiving
station C
(ID = 03)
Receiving
station D
(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.