GRCANFD is a VHDL IP core implementing a CAN-FD controller compatible with both CAN 2.0B and CAN-FD. It consists of an internal CAN-FD codec and a top layer handling the configuration and control of the IP. GRCANFD features a generic bus master interface to fetch and store frames from/to external memory. Wrappers for adapting the generic bus master to AMBA 2.0 AHB and AXI4 are available. The IP core also features an AMBA 2.0 APB slave interface for accessing the configuration registers.