atmega32c1 ATMEL Corporation, atmega32c1 Datasheet - Page 214

• Manufacturer Part Number: atmega32c1
• Description: Atmega32m1 Automotive 8-bit Avr Microcontroller With 32k/64k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

17.5.7.3
17.5.7.4
214
ATmega32/64/M1/C1
Data Length in Rx Response
Data Length in Tx Response
LRXDL (*)
LRXDL (*)
LTXDL (*)
LTXDL (*)
LIN bus
LIN bus
LBUSY
LBUSY
Figure 17-9. LIN2.1 - Rx Response - No error
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Figure 17-10. LIN1.3 - Tx Response - No error
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(*) : LRXDL & LTXDL updated by user
(*) : LRXDL & LTXDL updated by Rx Response or Tx Response task
The user initializes LRXDL field before setting the Rx Response command,
After setting the Rx Response command, LTXDL is reset by hardware,
LRXDL field will remain unchanged during Rx (during busy signal),
LTXDL field will count the number of received bytes (during busy signal),
If an error occurs, Rx stops, the corresponding error flag is set and LTXDL will give the num-
ber of received bytes without error,
If no error occurs, LRXOK is set after the reception of the CHECKSUM, LRXDL will be
unchanged (and LTXDL = LRXDL).
The user initializes LTXDL field before setting the Tx Response command,
After setting the Tx Response command, LRXDL is reset by hardware,
LTXDL will remain unchanged during Tx (during busy signal),
LRXDL will count the number of transmitted bytes (during busy signal),
If an error occurs, Tx stops, the corresponding error flag is set and LRXDL will give the num-
ber of transmitted bytes without error,
If no error occurs, LTXOK is set after the transmission of the CHECKSUM, LTXDL will be
unchanged (and LRXDL = LTXDL).
LIDOK
LIDOK
4
4
4
?
DATA-0
DATA-0
0
0
DATA-1
DATA-1
1
1
DATA-2
DATA-2
2
2
DATA-3
DATA-3
3
3
CHECKSUM
CHECKSUM
4
4
7647A–AVR–02/08
LRXOK
LTXOK