The XKAN module is a communication controller implementing the CAN protocol specification version 2.0 part A, B and CAN with Flexible Data-Rate protocol specification version 1.0. There is a 8Kbyte ram in XKAN subsystem, the ram implements filters for accept CAN base format (2.0 A) and extended format (2.0 B), receive buffers and transmit buffers. The number of this all function components can be configured by XKAN register.