HD6417750RF240V Datasheet, PDF (386/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 14 Serial Communication Interface (SCI)
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 14.10 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.
Rev. 7.00 Sep. 11, 2009 Page 350 of 566
REJ09B0211-0700