Section 16 Serial Communication Interface 3 (SCI3)
Transmitting
station
Serial transmission line
Receiving
station A
Receiving
station B
Receiving
station C
Receiving
station D
(ID = 01)
(ID = 02)
(ID = 03)
(ID = 04)
Serial
data
H'01
H'AA
(MPB = 1)
(MPB = 0)
ID transmission cycle = Data transmission cycle =
receiving station
specification
Data transmission to
receiving station specified by ID
Legend
MPB: Multiprocessor bit
Figure 16.15 Example of Inter-Processor Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
16.6.1
Multiprocessor Serial Data Transmission
Figure 16.16 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 SCI3 operations are the same
as those in asynchronous mode.
Rev. 3.00 Sep. 10, 2007 Page 319 of 528
REJ09B0216-0300
RENESAS [ RENESAS TECHNOLOGY CORP ]
