3069RF-ZTAT Datasheet, PDF (516/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Communication Formats: Four formats are available. Parity bit settings are ignored when a
multiprocessor format is selected. For details see table 13.10.
Clock: See the description of asynchronous mode.
Transmitting
processor
Receiving
processor A
(ID=01)
Serial communication line
Receiving
processor B
(ID=02)
Receiving
processor C
(ID=03)
Receiving
processor D
(ID=04)
Serial data
H'01
(MPB=1)
H'AA
(MPB=0)
ID-sending cycle:
receiving processor address
Data-sending cycle:
data sent to receiving processor
specified by ID
[Legend]
MPB : Multiprocessor bit
Figure 13.9 Example of Communication among Processors using Multiprocessor Format
(Sending Data H'AA to Receiving Processor A)
Transmitting and Receiving Data:
• Transmitting Multiprocessor Serial Data: Figure 13.10 shows a sample flowchart for
transmitting multiprocessor serial data and indicates the procedure to follow.
Rev. 5.0, 09/04, page 494 of 978