SH7046 Datasheet, PDF (396/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Section 12 Serial Communication Interface (SCI)
Transmitting
station
Serial transmission line
Receiving
station A
(ID = 01)
Receiving
station B
(ID = 02)
Receiving
station C
(ID = 03)
Receiving
station D
(ID = 04)
Serial
data
H'01
(MPB = 1)
H'AA
(MPB = 0)
ID transmission cycle =
receiving station
specification
Legend:
MPB: Multiprocessor bit
Data transmission cycle =
Data transmission to
receiving station specified
by ID
Figure 12.10 Example of Communication Using Multiprocessor Format
(Transmission of Data H’AA to Receiving Station A)
12.5.1 Multiprocessor Serial Data Transmission
Figure 12.11 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. 4.00 Dec 05, 2005 page 352 of 564
REJ09B0270-0400