SPNS174
–
SEPTEMBER 2011
5.6
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.
5.6.1
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
PRODUCT PREVIEW
132
Peripheral Information and Electrical Specifications
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