Datasheet

Section 14 Serial Communication Interface (SCI, IrDA)
Rev.6.00 Mar. 18, 2009 Page 589 of 980
REJ09B0050-0600
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 14.10 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
14.5.1 Multiprocessor Serial Data Transmission
Figure 14.11 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.