Fujitsu FR81S User Manual
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
7. Operation of LIN Interface (v2.1)
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
310
Figure 7-68 LIN bus timing (DATA Field
reception: FIFO use, AUTE=1 and ID register use).
Reception
FBYTE(setting)
FBYTE(setting)
Reception
FBYTE(display)
FBYTE(display)
1
0
M
LIN bus
LIN Break
LIN Break
delimiter
SCR : RXE
SSR : RDRF
Sync Field
SCR : RIE
ID Field
Data 1
Data 2
Data 3
Data (N-2)
LAMCR : LIDEN
ID Field value is
ID register use
ID register use
ID Field value is
Setting to ID register
Setting to ID register
LIN Break start
LAMCR : LAMEN
H : assist mode processing enable
LIN auto header
Transmission complete flag
Transmission complete flag
H : ID register use
Response
space
checksum
Data N
Data (N-1)
H : reception interrupt enable
H : reception enable
Checksum operation complete
FIFO read
ID Field value
LAMRID
N-4
N-3
N-2
Reception interrupt generation：
reception FIFO read
reception FIFO read
LAMSR : LAHC
LAMSR : LCSC
SACSR : BST
BGR
L : no auto baud rate adjustment H : auto baud rate adjustment
Baud rate value after it updates
SCR : TIE
SCR : TXE
L : transmission disable
L : transmission interrupt disable
： Don’t care
RDR
Data 1
LAMCR : LDL3-0
Data length setting
0
N-1
Data N
0
L : reception disable
Data 1
Figure 7-69 LIN bus timing (DATA Field reception: FIFO use, AUTE=1 and ID register
unused).
unused).
Reception
FBYTE(setting)
FBYTE(setting)
Reception
FBYTE(display)
FBYTE(display)
1
0
N
LIN bus
LIN Break
LIN Break
delimiter
SSR : RDRF
Sync Field
ID Field
Data 1
Data 2
Data 3
Data (N-2)
LAMCR : LIDEN
ID Field value is
ID register use
ID register use
ID Field value is
Setting to ID register
Setting to ID register
LIN Break start
LAMCR : LAMEN
H : assist mode processing enable
LIN auto header
Transmission complete flag
Transmission complete flag
L : RDR use
Response
space
checksum
Data N
Data (N-1)
Checksum operation complete
RDR read
LAMRID
N-2
N-3
Reception interrupt generation：reception FIFO read
LAMSR : LAHC
LAMSR : LCSC
SACSR : BST
BGR
L : no auto baud rate adjustment H : auto baud rate adjustment
Baud rate value after it updates
SCR : TIE
SCR : TXE
L : transmission disable
L : transmission interrupt disable
0
0
： Don’t care
RDR
Data N
Data 1
ID Field
LAMCR : LDL3-0
Data length setting
SCR : RXE
SCR : RIE
L : reception interrupt disable
H : reception enable
L : reception disable
0
N-1
N-4
Data 1
MB91520 Series
MN705-00010-1v0-E
1623