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(1) Data Transfer Format
There are four data transfer formats.
When a multiprocessor format is specified, the parity bit specification is invalid.
For details, see table 23.10.
(2) Clock
See the section on asynchronous mode.
Transmitting
station
Receiving
station A
(ID=01)
Receiving
station B
(ID=02)
Receiving
station C
(ID=03)
Receiving
station D
(ID=04)
Serial communication line
Serial
data
ID transmission cycle:
receiving station
specification
Data transmission cycle:
data transmission to
receiving station
specified by ID
(MPB=1)
(MPB=0)
H'01
H'AA
[Legend] MPB : Multiprocessor bit
Figure 23.9 Example of Inter-Processor Communication Using Multiprocessor Format
(Transmission of Data H'AA to Receiving Station A)
(3) Data Transfer Operations
(a) Multiprocessor Serial Data Transmission
Figure 23.10 shows a sample flowchart for multiprocessor serial data transmission.
The following procedure should be used for multiprocessor serial data transmission.
Summary of Contents for Hitachi H8S/2191
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