Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

26.3.7. Clocks

The CAN controller operates on the l4_sp_clk and can_clk clock inputs. The l4_sp_clk clock is used by the L4 slave interface and the can_clk is used to operate the CAN core.

The can_clk clock must be programmed to be at least eight times the CAN bus interface speed. For example, for a CAN bus interface operating at a 1 Mbps baud rate, the can_clk clock must be set to at least 8 MHz. The l4_sp_clk clock can operate at a clock frequency that is equal to or greater than the can_clk frequency.