AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 601

• Manufacturer Part Number: AT32UC3C2512C Automotive
• Manufacturer: Atmel Corporation

25.6.9
25.6.9.1
25.6.9.2
25.6.9.3
25.6.9.4
25.6.9.5
9166C–AVR-08/11
LIN Mode
Modes of operation
Baud Rate Configuration
Receiver and Transmitter Control
Character Transmission
Character Reception
The LIN Mode provides Master node and Slave node connectivity on a LIN bus.
The LIN (Local Interconnect Network) is a serial communication protocol which efficiently sup-
ports the control of mechatronic nodes in distributed automotive applications.
The main properties of the LIN bus are:
LIN provides cost efficient bus communication where the bandwidth and versatility of CAN are
not required.
The LIN Mode enables processing LIN frames with a minimum of action from the
microprocessor.
The USART can act either as a LIN Master node or as a LIN Slave node.
The node configuration is chosen by setting the MODE field in the Mode Register (MR):
In order to avoid unpredicted behavior, any change of the LIN node configuration must be fol-
lowed by a software reset of the transmitter and of the receiver (except the initial node
configuration after a hardware reset). (See
See Section “25.6.1.1” on page 566.
See Section “25.6.2” on page 570.
See Section “25.6.3.1” on page 571.
See Section “25.6.3.7” on page 579.
• Single Master/Multiple Slaves concept
• Low cost silicon implementation based on common UART/SCI interface hardware, an
• Self synchronization without quartz or ceramic resonator in the slave nodes
• Deterministic signal transmission
• Low cost single-wire implementation
• Speed up to 20 Kbit/s
• LIN Master Node (MODE=0xA)
• LIN Slave Node (MODE=0xB)
• LIN Master Node: the baud rate is configured in the Baud Rate Generator Register (BRGR).
• LIN Slave Node: the initial baud rate is configured in BRGR, this configuration is
equivalent in software, or as a pure state machine.
automatically copied in the LIN Baud Rate Register (LINBRR) when writing BRGR. After
synchronization procedure, the baud rate is updated in LINBRR.
Section
25.6.9.3)
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