Hitachi H8/3692 ユーザーズマニュアル
Rev. 1.0, 07/01, page 216 of 372
1 frame
Start
bit
Start
bit
Receive
data (ID1)
Receive data
(Data1)
MPB
MPB
Stop
bit
Stop
bit
Mark state
(idle state)
1 frame
0
1
D0
D1
D7
1
1
1
1
0
D0
D1
D7
ID1
0
Serial
data
data
MPIE
RDRF
RDR
value
value
RDR
value
value
LSI
operation
operation
RXI interrupt
request
MPIE cleared
to 0
request
MPIE cleared
to 0
User
processing
processing
RDRF flag
cleared
to 0
cleared
to 0
RXI interrupt request
is not generated, and
RDR retains its state
is not generated, and
RDR retains its state
RDR data read
When data is not
this station's ID,
MPIE is set to 1
again
this station's ID,
MPIE is set to 1
again
1 frame
Start
bit
Start
bit
Receive
data (ID2)
Receive data
(Data2)
MPB
MPB
Stop
bit
Stop
bit
Mark state
(idle state)
1 frame
0
1
D0
D1
D7
1
1
1
1
0
(a) When data does not match this receiver's ID
(b) When data matches this receiver's ID
D0
D1
D7
ID2
Data2
ID1
0
Serial
data
data
MPIE
RDRF
LSI
operation
operation
RXI interrupt
request
MPIE cleared
to 0
request
MPIE cleared
to 0
User
processing
processing
RDRF flag
cleared
to 0
cleared
to 0
RXI interrupt
request
request
RDRF flag
cleared
to 0
cleared
to 0
RDR data read
When data is
this station's
ID, reception
is continued
this station's
ID, reception
is continued
RDR data read
MPIE set to 1
again
MPIE set to 1
again
Figure 14-18 Example of SCI in Reception Using Multiprocessor Format
(Example with 8-Bit Data, MultiprocessorBit, One Stop Bit)