HD643303x Hitachi, HD643303x Datasheet - Page 365

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

Communication Formats: Four formats are available. Parity-bit settings are ignored when a
multiprocessor format is selected. For details see table 11-8.
Clock: See the description of asynchronous mode.
Figure 11-9 Example of Communication among Processors using Multiprocessor Format
Serial data
Legend
MPB: Multiprocessor bit
Transmitting
processor A
processor
Receiving
(ID = 01)
(Sending Data H'AA to Receiving Processor A)
ID-sending cycle: receiving
processor address
H'01
processor B
Receiving
(ID = 02)
(MPB = 1)
Serial communication line
350
processor C
Data-sending cycle:
data sent to receiving
processor specified by ID
Receiving
(ID = 03)
H'AA
(MPB = 0)
processor D
Receiving
(ID = 04)