7 lin communication function – FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 32 USART (LIN / FIFO)
7.USART Operation
7.7 LIN Communication Function
USART communication with LIN devices is available for both LIN master or LIN slave systems.
■
LIN-Master-Slave Communication Function
The settings shown in the figure below are required to operate USART in LIN communication mode (operation
mode 3).
Figure 7-13 Settings for USART
■
LIN device connection
As shown in the Figure below, a communication system of one LIN-Master device and a LIN-Slave device.
USART can operate both as LIN-Master or LIN-Slave.
Figure 7-14 Connection example of a small LIN-Bus system
7.8 Sample Flowcharts for USART in LIN Communication (Operation Mode 3)
This section contains sample flowcharts for USART in LIN communication.
bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SCR04,SMR04 PEN
P
SBL
CL
AD
CRE RXE
TXE MD1 MD0 OTO EXT
REST UPCL SCKE SOE
Mode 3
x
x
+
+
x
0
1
1
x
0
0
0
1
SSR04,
TDR04/RDR04
PE ORE FRE RDRF TDRE BDS RIE
TIE
Set transmission data (during writing)
Retain reception data (during reading)
Mode 3
x
+
ESCR04,ECCR
04
LBIE LBD LBL1 LBL0 SOPE SIOP CCO SECS
-
LBR MS SCDE SSM
BIE
RBI
TBI
Mode 3
x
x
x
x
x
x
x
x
x
Bit is used
x Bit is not used
0 / 1 Set bit to 0 / 1
+ Bit is automatically set to the correct value
SOT
SIN
LIN-Master
Single-Wire-
Transceiver
LIN bus
SOT
SIN
Single-Wire-
Transceiver
LIN-Slave