Datasheet

Section 15 Serial Communication Interface (SCI)
Rev. 6.00 Mar. 18, 2010 Page 597 of 982
REJ09B0054-0600
Transmitting
station
Receiving
station A
Receiving
station B
Receiving
station C
Receiving
station D
(ID = 01) (ID = 02) (ID = 03) (ID = 04)
Serial transmission 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 15.13 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
15.5.1 Multiprocessor Serial Data Transmission
Figure 15.14 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.