Operations Of Lin-Uart And Lin-Uart Setting Procedure Example - Fujitsu 8FX Hardware Manual

MB95630H Series
14.6 Operations of LIN-UART and LIN-UART Setting
Procedure Example
The LIN-UART performs bi-directional serial communication in operating mode
0/2, master/slave communication in operating mode 1, LIN master/slave
communication in operating mode 3.
■ Operations of LIN-UART
● Operating mode
The LIN-UART has four operating modes (0 to 3), providing different connection methods
between CPUs and different data transfer methods as shown in Table 14.6-1.
Table 14.6-1 LIN-UART Operating Modes
Operating mode
0 Normal mode
1 Multiprocessor mode 7 bits or 8 bits +1
2 Normal mode
3 LIN mode
- : Unavailable
* : "+1" is the address/data select bit (AD) used for communication control in multiprocessor mode.
The MD0 and MD1 bits in the LIN-UART serial mode register (SMR) are used to select the
following LIN-UART operating modes.
Table 14.6-2 LIN-UART Operating Modes
MD1
0
0
1
1
Notes:
• In operating mode 1, a system connecting to a master/slave supports both master
operations and slave operations.
• In operating mode 3, the communication format is fixed at "8-bit data, no parity bit, one
stop bit, LSB-first".
• If the operating mode is changed, all transmission operations and reception operations
are canceled, and the LIN-UART waits for the next transmission/reception.
MN702-00009-2v0-E
Data length
No parity With parity
7 bits or 8 bits
*
-
8 bits
8 bits -
MD0 Mode
0 0
1 1
0 2
1 3
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER 14 LIN-UART
14.6 Operations of LIN-UART and LIN-UART
Setting Procedure Example
Synchronous
Stop bit length
method
Asynchronous
1 bit or 2 bits
Asynchronous
Synchronous None, 1 bit, 2 bits
Asynchronous 1 bit
Type
Asynchronous (Normal mode)
Asynchronous (Multiprocessor mode)
Synchronous (Normal mode)
Asynchronous (LIN mode)
Data bit format
LSB first
MSB first
LSB first
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