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Configurable CAN Bus Controller with Flexible Data-Rate

All Silicon IP


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. That's why Digital Core Design developed a unique IP Core, which delimits the highest quality standards. 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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