Hitachi F-ZTAT H8/3039 Series Hardware Manual page 375

Communication Formats: Four formats are available. Parity-bit settings are ignored when a
multiprocessor format is selected. For details see table 11-11.
Clock: See the description of asynchronous mode.
Transmitting
processor
Receiving
processor A
(ID = 01)
Serial data
Legend
MPB: Multiprocessor bit
Figure 11-9 Example of Communication among Processors using Multiprocessor Format
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Serial communication line
Receiving
processor B
(ID = 02)
H'01
(MPB = 1)
ID-sending cycle: receiving
processor address
(Sending Data H'AA to Receiving Processor A)
Receiving
processor C
(ID = 03)
H'AA
(MPB = 0)
Data-sending cycle:
data sent to receiving
processor specified by ID
Receiving
processor D
(ID = 04)