Multiprocessor Serial Data Transmission; Figure 14.10 Example Of Communication Using Multiprocessor Format (Transmission Of Data H'aa To Receiving Station A) - Renesas H8S/2368 Series Hardware Manual

Transmitting
station
Receiving
station A
(ID = 01)
Serial
data
Legend
MPB: Multiprocessor bit
Figure 14.10 Example of Communication Using Multiprocessor Format
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.
Rev. 2.00, 05/03, page 552 of 820
Receiving
station B
(ID = 02)
H'01
(MPB= 1)
ID transmission cycle =
receiving station
specification
(Transmission of Data H'AA to Receiving Station A)
Serial communication line
Receiving
station C
(ID = 03)
H'AA
Data transmission cycle =
data transmission to
receiving station specified by ID
Receiving
station D
(ID = 04)
(MPB= 0)