Renesas H8 Series Hardware Manual

Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 382 of 652
REJ09B0042-0700
1 frame
Start
bit
Start
bit
Receive
data (ID1)
Receive data
(Data1)
MPB MPB
Stop
bit
Stop
bit
Mark state
(idle state)
1 frame
01D0D1D711 110D0D1 D7
ID1
0
Serial
data
MPIE
RDRF
RDR
value
RDR
value
LSI
operation
RXI request
MPIE cleared
to 0
User
processing
RDRF cleared
to 0
No RXI request
RDR retains
previous state
RDR data read When data is not
this receiver's ID,
bit 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
01D0D1D711 110
(a) When data does not match this receiver's ID
(b) When data matches this receiver's ID
D0 D1 D7
ID2 Data2ID1
0
Serial
data
MPIE
RDRF
LSI
operation
RXI request
MPIE cleared
to 0
User
processing
RDRF cleared
to 0
RXI request RDRF cleared
to 0
RDR data read When data is
this receiver's
ID, reception
is continued
RDR data read
Bit MPIE set to
1 again
Figure 10.20 Example of Operation when Receiving using Multiprocessor Format
(8-Bit Data, Multiprocessor Bit, 1 Stop Bit)

Renesas H8 Series Specifications

General

Brand	Renesas
Model	H8 Series
Category	Computer Hardware
Language	English