Configurable CAN Bus Controller IP with Flexible Data-Rate

The DCAN FD is a standalone controller for the Controller Area Network (CAN), widely used in automotive and industrial applications. The DCAN FD was designed in accordance to ISO 11898-1:2015 and conforms to:Bosch CAN 2.0B specification (2.0B Active) andCAN FD (flexible data-rate).Sophisticated error detection functions (which increase communication reliability) and unique fault confinement (which guarantees network-wide data consistency) have decided about CAN's popularity. Because of its fundamental role in all aspects of security and safety, trustworthy implementations are crucial. The improved protocol overcomes standard CAN limits: data can be transmitted faster than with 1 Mbit/s and the payload (data field) is up to 64 byte long and limited to 8 byte anymore. When only one node is transmitting, the bit-rate can be increased, because no nodes need to be synchronized. Of course, before the transmission of the ACK slot bit, the nodes need to be re-synchronized. The core has a simple CPU interface (8/16/32 bit configurable data width), with small or big endian addressing scheme. Hardware message filtering and 128 byte receive FIFO enable back-to-back message reception, with minimum CPU load. The DCAN FD is provided as HDL source code, allowing target use in FPGA and ASIC technologies.

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