SAM3X8C Atmel Corporation, SAM3X8C Datasheet - Page 813
SAM3X8C
Manufacturer Part Number
SAM3X8C
Description
Manufacturer
Atmel Corporation
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35.7.7.7
35.7.8
35.7.8.1
35.7.8.2
35.7.8.3
35.7.8.4
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
LIN Mode
Modes of Operation
Baud Rate Configuration
Receiver and Transmitter Control
Character Transmission
Receiver Timeout
reception but only a low level. However, this low level must be present on the slave select line
(NSS) at least 1 Tbit before the first serial clock cycle corresponding to the MSB bit.
Because the receiver baudrate clock is active only during data transfers in SPI Mode, a receiver
timeout is impossible in this mode, whatever the Time-out value is (field TO) in the Time-out
Register (US_RTOR).
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 USART_MODE field in the USART Mode regis-
ter (US_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 “Baud Rate in Asynchronous Mode” on page 782.
The baud rate is configured in the Baud Rate Generator register (US_BRGR).
See “Receiver and Transmitter Control” on page 786.
See “Transmitter Operations” on page 787.
• 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 (USART_MODE=0xA)
• LIN Slave Node (USART_MODE=0xB)
equivalent in software, or as a pure state machine.
Section
35.7.8.3)
SAM3X/A
SAM3X/A
813
813
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