Lin Communication Function - Fujitsu MB90390 Series Hardware Manual

CHAPTER 20 UART2, UART3
20.7.7

LIN Communication Function

UART2, UART3 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 UART2, UART3 in LIN communication
mode (operation mode 3).
Figure 20.7-16 Settings for UART2, UART3 in Operation Mode 3 (LIN)
SCR2/SCR3, SMR2/SMR3
SSR2/SSR3, TDR2/TDR3,
RDR2/RDR3
ESCR2/ESCR3,
ECCR2/ECCR3
"1"
"0"
●
LIN device connection
As shown in the Figure below, a communication system of one LIN-Master device and a LIN-Slave device.
UART2, UART3 can operate both as LIN-Master or LIN-Slave.
Figure 20.7-17 Connection Example of a Small LIN-Bus System
SOT
LIN-Master
398
SIN
Single-Wire-
Transceiver
LIN bus
Single-Wire-
Transceiver
SOT
SIN
LIN-Slave