HD6433682 ETC, HD6433682 Datasheet - Page 310

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

Rev. 3.00, 05/03, page 280 of 472
Serial
data
MPIE
RDRF
RDR
value
LSI
operation
User
processing
RDR
value
Serial
data
MPIE
RDRF
LSI
operation
User
processing
Figure 16.18 Example of SCI3 Reception Using Multiprocessor Format
1
1
(Example with 8-Bit Data, Multiprocessor Bit, One Stop Bit)
Start
Start
bit
bit
0
0
D0
D0
ID1
D1
D1
(a) When data does not match this receiver's ID
RXI interrupt
request
MPIE cleared
to 0
RXI interrupt
request
MPIE cleared
to 0
data (ID1)
data (ID2)
Receive
Receive
1 frame
1 frame
(b) When data matches this receiver's ID
D7
D7
MPB
MPB
1
1
RDRF flag
cleared
to 0
RDR data read
Stop
RDRF flag
cleared
to 0
RDR data read
Stop
bit
1
bit
1
Start
Start
bit
0
bit
0
D0
D0
1 frame
1 frame
Receive data
D1
Receive data
D1
ID2
(Data1)
(Data2)
When data is not
this station's ID,
MPIE is set to 1
again
When data is
this station's
ID, reception
is continued
RXI interrupt
request
ID1
D7
D7
MPB
MPB
0
0
Stop
Stop
RDRF flag
cleared
to 0
bit
bit
1
1
RXI interrupt request
is not generated, and
RDR retains its state
RDR data read
MPIE set to 1
again
Mark state
Mark state
(idle state)
(idle state)
Data2
1
1