p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 381

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

15.5.1
Figure 15.11 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 SCI operations are the same
as those in asynchronous mode.
Multiprocessor Serial Data Transmission
Figure 15.10 Example of Communication Using Multiprocessor Format
Serial
data
[Legend]
MPB: Multiprocessor bit
Transmitting
Receiving
(Transmission of Data H'AA to Receiving Station A)
station A
(ID = 01)
station
ID transmission
cycle =
receiving station
specification
H'01
Receiving
station B
(ID = 02)
(MPB = 1)
Serial communication line
Data transmission cycle =
Data transmission to
receiving station specified by ID
Section 15 Serial Communication Interface (SCI)
Receiving
H'AA
station C
(ID = 03)
Rev. 1.00 Sep. 21, 2006 Page 343 of 658
(MPB = 0)
Receiving
station D
(ID = 04)
REJ09B0310-0100