Fujitsu FR81S Benutzerhandbuch
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
7. Operation of LIN Interface (v2.1)
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
307
Slave operation timing chart
Figure 7-62 LIN bus timing (DATA Field transmission: FIFO unused, AUTE=1 and ID register
use).
LIN bus
LIN Break
LIN Break
delimiter
SCR : RXE
SSR : RDRF
Sync Field
SCR : TIE
SCR : RIE
SCR : TXE
SSR : TDRE
ID Field
Data 1
Data 2
Data 3
Data (N-2)
LAMCR : LIDEN
TDR write
ID Field value is
ID register use
ID register use
Transmission
interrupt setting
interrupt setting
LAMCR : LAMEN
H : assist mode processing enable
LAMSR : LAHC
LIN auto header : transmission
complete flag
complete flag
H : ID register use
Response
space
checksum
Data N
Data (N-1)
LAMSR : LCSC
H : reception interrupt disable
Checksum operation complete
ID Field value
LAMRID
L : transmission disable
L : transmission interrupt disable
SACSR : BST
BGR
L : no auto baud rate adjustment H : auto baud rate adjustment
Baud rate value after it updates
H : transmission interrupt enable
H : transmission enable
Transmission interrupt
generation :data write
generation :data write
: Don’t care
TDR
RDR
Data 1
Data N
Data (N-1)
Data 2
Data 3
Data 4
LAMCR : LDL3-0
Data length setting
H : reception disable
Figure 7-63 LIN bus timing (DATA Field
transmission: FIFO unused, AUTE=1 and ID register
unused).
LIN bus
LIN Break
LIN Break
delimiter
SCR : RXE
SSR : RDRF
Sync Field
SCR : TIE
SCR : RIE
SCR : TXE
SSR : TDRE
ID Field
Data 1
Data 2
Data 3
Data (N-2)
LAMCR : LIDEN
TDR write
ID Field value is
RDR use
Transmission/re
ception interrupt
setting
RDR use
Transmission/re
ception interrupt
setting
LAMCR : LAMEN
H : assist mode processing enable
LAMSR : LAHC
LIN auto header : transmission
complete flag
complete flag
L : RDR use
Response
space
checksum
Data N
Data (N-1)
LAMSR : LCSC
L : reception interrupt disable
Checksum operation complete
LAMRID
L : transmission disable
L : transmission interrupt disable
SACSR : BST
BGR
L : no auto baud rate adjustment H : auto baud rate adjustment
Baud rate value after it updates
H : transmission interrupt enable
H : transmission enable
Transmission interrupt
generation:data write
generation:data write
: Don’t care
RDR
TDR
Data 1
Data 2
Data 3
Data N
Data (N-1)
LAMCR : LDL3-0
Data length setting
Data 4
L : reception disable
ID Field value
MB91520 Series
MN705-00010-1v0-E
1620