bosch_can_user guide 2/10 - 2.2 Block Diagram

2.2 Block Diagram

The design consists of the following functional blocks (see figure 1):

CAN Core
CAN Protocol Controller and Rx/Tx Shift Register for serial/parallel conversion of messages.
Message RAM
Stores Message Objects and Identifier Masks.
Registers
All registers used to control and to configure the C_CAN module.
Message Handler
State Machine that controls the data transfer between the Rx/Tx Shift Register of the CAN Core and the Message RAM as well as the generation of interrupts as programmed in the Control and Configuration Registers.
Module Interface
Up to now the C_CAN module is delivered with three different interfaces. An 8-bit interface for the Motorola HC08 controller and two 16-bit interfaces to the AMBA APB bus from ARM. They can easily be replaced by a user-defined module interface
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