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
255
7.2.1. List of Interrupts of LIN-UART Interface (v2.1) (assist
mode)
Table 7-2 shows the relationship between the LIN-UART interrupt control bits and the interrupt factors in
the LIN assist mode.
Table 7-2 Interrupt Control Bits and Interrupt Factors for LIN Interface (v2.1) (assist mode)
Interrupt
type
Interrupt
request flag
bit
Flag
register
Interrupt factor
Interrupt
factor
enable bit
How to clear the interrupt
request
Recep-
tion
RDRF
SSR
1-byte reception
SCR:RIE
Reading reception data (RDR)
Reception of as much
data as specified by
FBYTE
Reading reception data (RDR)
until the reception FIFO becomes
empty
Detection of reception
idle for 8-bit time or
more while there is valid
data in the reception
FIFO with the FRIIE bit
set to "1".
ORE
SSR
Overrun error
Writing "1" to the reception error
flag clear bit (SSR:REC)
FRE
SSR
Framing error
LBSER
LAMSER LIN bus error detection
LAMIER:LASE
RIE
Writing "0" to the
LAMESR:LBSER
LPFER
LAMESR LIN Sync Data error
detection
LAMIER:LSFE
RIE
Writing "0" to the
LAMESR:LSFER
LPTER
LAMESR
LIN ID parity error
detection
LAMIER:LPTE
RIE
Writing "0" to the
LAMESR:LPTER
LCSER
LAMESR LIN checksum error
detection
LAMIER:LCSE
RIE
Writing "0" to the
LAMESR:LCSER
Trans-
mission
TDRE
SSR
Transmission register is
empty
SCR:TIE
Writing the transmit data (TDR)
or writing of "1" to the
transmission FIFO operation
enable bit while the transmission
FIFO operation enable bit is "0"
and there is valid data in the
transmission FIFO
(retransmission)*
1
TBI
SSR
No transmission
operation
SCR:TBIE
Write to the transmit data (TDR),
write "1" to the Lin break field set
bit(LBR), or write "1" to the
transmission FIFO operation
enable bit when it is "0" and the
transmission FIFO has valid data
(retransmission)*
1
FDRQ
FCR1
The storage data value
of the transmission
FIFO is FTICR setting
value or less, or the
value is empty.
FCR1:FTIE
Writing of "0" to the FIFO
transmission data request bit
(FCR1:FDRQ), or transmission
FIFO is full
MB91520 Series
MN705-00010-1v0-E
1568