RM46L852
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SPNS185 –SEPTEMBER 2012
5.8 Local Interconnect Network Interface (LIN)
The SCI/LIN module can be programmed to work either as an SCI or as a LIN. The core of the module is
an SCI. The SCI’s hardware features are augmented to achieve LIN compatibility.
The SCI module is a universal asynchronous receiver-transmitter that implements the standard nonreturn
to zero format. The SCI can be used to communicate, for example, through an RS-232 port or over a K-
line.
The LIN standard is based on the SCI (UART) serial data link format. The communication concept is
single-master/multiple-slave with a message identification for multi-cast transmission between any network
nodes.
5.8.1 LIN Features
The following are features of the LIN module:
• Compatible to LIN 1.3, 2.0 and 2.1 protocols
• Multi-buffered receive and transmit units DMA capability for minimal CPU intervention
• Identification masks for message filtering
• Automatic Master Header Generation
– Programmable Synch Break Field
– Synch Field
– Identifier Field
• Slave Automatic Synchronization
– Synch break detection
– Optional baudrate update
– Synchronization Validation
• 2
31
programmable transmission rates with 7 fractional bits
• Error detection
• 2 Interrupt lines with priority encoding
Copyright © 2012, Texas Instruments Incorporated Peripheral Information and Electrical Specifications 143
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