BeagleBone CANBus Cape
System Reference Manual
Revision A1
Page 16 of 21
5.0
System Architecture and Design
This section provides a high level description of the design of the BeagleBone CANBus
Cape and its overall architecture.
5.1
System Block Diagram
Figure 3 is the high level block diagram of the BeagleBone CANBus Cape.
Figure 3. BeagleBone CANBus Cape High Level Block Diagram
5.2
CAN Transceiver
ISO1050 is a galvanically isolated CAN transceiver. The input and output buffers are
isolated by a silicon oxide insulation barrier that provides galvanic isolation of up to 2500
V
RMS
. The device is powered by 3.3V supply that comes from the expansion connectors.
It also has an isolated secondary power source of 5V. The bus side is connected to bus
signals; therefore, 5V is required to provide a high signal-to-noise ratio. The controller
