HD6433694 Datasheet, PDF (239/432 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Transmitting
station
Serial transmission line
Serial
data
Receiving
station A
(ID = 01)
Receiving
station B
(ID = 02)
H'01
(MPB = 1)
Receiving
station C
(ID = 03)
Receiving
station D
(ID = 04)
H'AA
(MPB = 0)
ID transmission cycle = Data transmission cycle =
receiving station
Data transmission to
specification
receiving station specified by ID
Legend
MPB: Multiprocessor bit
Figure 14.15 Example of Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
14.6.1 Multiprocessor Serial Data Transmission
Figure 14.16 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. 4.00, 03/04, page 211 of 400