HD64F3694FXV Datasheet, PDF (252/452 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 14 Serial Communication Interface 3 (SCI3)
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.5.00 Nov. 02, 2005 Page 222 of 418
REJ09B0028-0500