Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 241
CHAPTER 14 LIN-UART
14.6 Operations of LIN-UART and LIN-UART
Setting Procedure Example
14.6.8 Examples of LIN-UART LIN Communication Flow
Chart (Operating Mode 3)
This section shows examples of LIN-UART LIN communication flow charts.
■ LIN Master Device
Figure 14.6-18 LIN Master Flow Chart
YES
NO
NO
YES
YES
NO
YES
NO
Start
Initial setting:
Set to operating mode 3
Enable serial data output, set baud rate
Set synch break length
TXE = 1, TIE = 0, RXE = 1, RIE = 1
Message?
RXE = 0
Enable synch break interrupts
Transmit synch break:
ECCR:LBR = 1
Transmit Synch field:
TDR = 0x55
LBD = 1
Synch break interrupts
Receive ID field
*1
Enable reception
LBD = 0
Disable synch break
interrupts
No error?
Handle an error
*2
Data field
received?
Set transmit data 1
TDR = Data 1
Enable transmit
interrupts
Wake up?
(0x80 reception)
Receive synch field
*1
Set Identify field: TDR = ID
RDRF = 1
Receive interrupt
RDRF = 1
Receive interrupt
(Reception) (Transmission)
RDRF = 1
Receive interrupt
Receive data 1
*1
Receive data N
*1
RDRF = 1
Receive interrupt
Set transmit data N
TDR = Data N
Disable transmit
interrupts
Receive data 1
*1
Read data 1
Receive data N
*1
Read data N
TDRE = 1
Transmit interrupt
RDRF = 1
Receive interrupt
RDRF = 1
Receive interrupt
* 1: If an error occurs, proceed to process the error.
* 2: - If the FRE or ORE flag is set to "1", write "1" to the SCR:CRE bit to clear the error flag.
- If the ESCR:LBD bit is set to "1", execute the LIN-UART reset.
Note: Deal properly with any error detected in a process.

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English