MB95630H Series
MN702-00009-1v0-E
FUJITSU SEMICONDUCTOR LIMITED
237
CHAPTER 14 LIN-UART
14.6 Operations of LIN-UART and LIN-UART
Setting Procedure Example
14.6.6
Master/Slave Mode Communication Function
(Multiprocessor Mode)
Operating mode 1 allows communication among multiple CPUs connected in
master/slave mode. The LIN-UART can be used as a master or a slave.
■
Master/Slave Mode Communication Function
To operate the LIN-UART in multiprocessor mode (operating mode 1), the settings shown in
Figure 14.6-13 are required.
Figure 14.6-13 Settings of LIN-UART Operating Mode 1
●
Inter-CPU connection
For master/slave mode communication, a communication system consists of two common
communication lines connecting between one master CPU and multiple slave CPUs as shown
in Figure 14.6-14. The LIN-UART can be used as a master or a slave.
Figure 14.6-14 Connection Example of LIN-UART Master/Slave Mode Communication
●
Function selection
In master/slave mode communication, select the operating mode and the data transfer method
as shown in Figure 14.6-14.
bit15 bit14 bit13 bit12 bit11 bit10 bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
SCR, SMR
PEN
P
SBL
CL
AD
CRE RXE TXE MD1 MD0 OTO EXT REST UPCL SCKE SOE
Mode 1
→
+
×
0
0
1
0
0
0
SSR,
RDR/TDR
PE
ORE FRE RDRF TDRE BDS RIE
TIE
Set compare data (during writing)
Retain receive data (during reading)
Mode 1
→
×
ESCR, ECCR LBIE LBD LBL1 LBL0 SOPE SIOP CCO SCES
Reserved
LBR
MS SCDE SSM
Reserved
RBI
TBI
Mode 1
→
×
×
×
×
0
0
0
×
×
×
×
0
: Bit to be used
× : Unused bit
1 : Set to "1"
0 : Set to "0"
+ : Bit correctly set automatically
S
OT
S
IN
S
OT
S
IN
S
OT
S
IN
Master CPU
Slave CPU #0
Slave CPU #1
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