The DRE is a hardware accelerator used to route Controller Area Network (CAN) frames and Ethernet frames.

The DRE routes CAN frames between Ethernet interfaces. Additionally, it can assist in routing CAN frames from one CAN interface to another CAN interface or to a user-configured memory location, and in forwarding Ethernet frames between Ethernet interfaces.

The DRE is aligned to the AVTP Control frame format defined by IEEE 1722-2016.

In this chapter the following notations from IEEE 1722-2016 are used:

  • AVTP frame refers to an Ethernet frame containing Audio Video Transport Protocol

  • ACF (AVTP Control Format) frame refers to an AVTP frame containing control frames

  • ACF_CAN_BRIEF message refers to CAN frames contained within an ACF frame



    The following chapters describe the core elements of the DRE, their role in routing/forwarding and the configuration possibilities