Fujitsu FR81S Manuel D’Utilisation
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
113
[bit2] LSFERT: LIN Sync Field error pseudo trouble setting bit
This bit controls the occurrence of the LIN Sync Field error.
When the LIN assist mode is set as master mode (SCR:MS= "0") and this bit is set to "1" (errors occur)
before the start bit of the Sync Field, all bits of the LIN Sync Field are outputted inverted.
Until the setting of this bit is released (="0"), the pseudo trouble function is effective and the output from
the Sync Field is being kept inverted.
LSFERT
LIN Sync Field error pseudo trouble setting
0
Non occurrence of error
1
Occurrence of error
Notes:
⋅
Function of this register is effective only in the LIN assist mode (LAMCR:LAMEN="1").
⋅
This function is effective only at automatic baud rate adjustment disabled (SACSR:AUTE="0") in slave
mode (SCR:MS="1").
[bit1] LBSERT: LIN bus error pseudo trouble setting bit
This bit controls the occurrence of the LIN bus error.
When the LIN-assist-mode is set as master-mode, the LIN-bus-error will occur and the flag bit
(LAMESR:LBSER) will be set to 1 in the following case:
If this bit is set to "1" (errors occur) before the stop bit of each field (LIN Break, Sync Field, ID Field, data,
and checksum) and LIN frame (LIN Break, Sync Field, ID Field, data, and checksum) is transmitted.
When the LIN assist mode is set as slave mode, if this bit is set to "1" (errors occur) before the stop bit of
each field (data and checksum) that does the response transmission, the LIN bus error will occur, and then
the flag bit (LAMESR:LBSER) is set to "1".
Until the setting of this bit is released (="0"), the pseudo trouble function is effective and generates the
error.
LBSERT
LIN bus error pseudo trouble setting
0
Non occurrence of error
1
Occurrence of error
Notes:
⋅
Function of this register is effective only in the LIN assist mode (LAMCR:LAMEN="1").
⋅
LIN bus error pseudo trouble of LIN Break Field cannot be set.
⋅
When the LIN bus error and the LIN checksum error or the LIN ID parity error are set as a pseudo
trouble at the same time, only the LIN bus error is detected. Neither the LIN checksum error nor the LIN
ID parity error is detected.
⋅
When the LIN bus error and the LIN Sync Data error or the framing error is set as a pseudo trouble
before the LIN transmission start is set (SCR:LBR="1") at the same time, the LIN bus error and the LIN
Sync Data error or the framing error is detected at the same time.
⋅
When the LIN bus error is detected, transmission and reception in the assist mode will stop.
MB91520 Series
MN705-00010-1v0-E
1426