202
ATmega16M1/32M1/64M1 [DATASHEET]
8209E–AVR–11/2012
20.5.7.5
Data length after error
Figure 20-11. Tx Response - error.
Note:
Information on response (ex: error on byte) is only available at the end of the serialization/de-serialization of the byte.
20.5.7.6
Data length in UART mode
The UART mode forces LRXDL and LTXDL to 0 and disables the writing in LINDLR register
Note that after reset, LRXDL and LTXDL are also forced to 0
20.5.8
xxOK flags
There are three xxOK flags in LINSIR register:
LIDOK: LIN IDentifier OK
It is set at the end of the header, either by the Tx Header function or by the Rx Header. In LIN 1.3, before
generating LIDOK, the controller updates the LRXDL & LTXDL fields in LINDLR register.
It is not driven in UART mode.
LRXOK: LIN RX response complete
It is set at the end of the response by the Rx Response function in LIN mode and once a character is received
in UART mode.
LTXOK: LIN TX response complete
It is set at the end of the response by the Tx Response function in LIN mode and once a character has been
sent in UART mode.
These flags can generate interrupts if the corresponding enable interrupt bit is set in the LINENIR register (see
20.5.9
xxERR flags
LBERR = LIN Bit ERRor
A unit that is sending a bit on the bus also monitors the bus. A LIN bit error will be flagged when the bit value
that is monitored is different from the bit value that is sent. After detection of a LIN bit error the transmission is
aborted.
LCERR = LIN Checksum ERRor
A LIN checksum error will be flagged if the inverted modulo-256 sum of all received data bytes (and the
protected identifier in LIN 2.1) added to the checksum does not result in 0xFF.
DATA-0
DATA-1
LCMD2..0=000b
LIN bus
LBUSY
1st Byte
2 nd Byte
3 rd Byte
LERR
1
40
LRXDL
2
LCMD=Tx Response
LTXDL
4
DATA-2
ERROR