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BeagleBone CANBus Cape 

System  Reference Manual 

Revision A1 

 

  

 

Page 9 of 21 

 

 

 

1.0

 

Introduction 

 
This  document  is  the  System  Reference  Manual  for  the  BeagleBone  CANBus  Cape,  an 
add-on board for the BeagleBone. 
 
This document is intended as a guide to assist anyone purchasing or who are considering 
purchasing  the  board  to  understand  the  overall  design  and  usage  of  the  BeagleBone 
CANBus Cape from the system level perspective. 
 
The  design  is  subject  to  change  without  notice  as  we  will  work  to  keep  improving  the 
design as the product matures. 
  
The key sections in this document are: 
 

Section 2.0 – Change History

 

Provides tracking for the changes made to the System Reference Manual. 

Section 3.0 – Overview

 

 

This is a high level overview of the BeagleBone CANBus Cape. 

Section 4.0 – Features and Specification

 

 

Provided here are the features and electrical specifications of the board. 

Section 5.0 – System Architecture and Design

 

This  section  provides  information  on  the  overall  architecture  and  design  of  the 
BeagleBone  CANBus  Cape.  This  is  a  very  detailed  section  that  goes  into  the 
design of each circuit on the board. 

Section 6.0 – Mechanical

 

 

Information  is  provided  here  on  the  dimensions  of  the  BeagleBone  CANBus 

Cape. 

Section 7.0 – Design Materials

 

This section provides information on where to get the design files. 
 
 
 
 
 
 
 
 
 
 
 
 

 

Summary of Contents for CANBus Cape

Page 1: ...BeagleBone CANBus Cape System Reference Manual Revision A1 September 28th 2012...

Page 2: ...license results one license_code by sa For any questions concerns or issues submit them to support beagleboardtoys com BEAGLEBONE CANBUS CAPE DESIGN These design materials referred to in this document...

Page 3: ...ICULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR O...

Page 4: ...R STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods Further the user...

Page 5: ...problems occurring as a result of improper use modifications exposure to water excessive voltages abuse or accidents All boards will be returned via standard mail if an issue is found If no issue is...

Page 6: ...3 REPAIRS 12 4 0 FEATURES AND SPECIFICATIONS 13 4 1 KEY COMPONENT LOCATIONS 14 4 2 CAN BUS INTERFACE 14 4 3 POWER INDICATOR 15 4 4 MECHANICAL SPECIFICATIONS 15 4 5 ELECTRICAL SPECIFICATIONS 15 5 0 SY...

Page 7: ...e 2 Key Components 14 Figure 3 BeagleBone CANBus Cape High Level Block Diagram 16 Figure 4 CAN Transceiver Circuit 17 Figure 5 UART Selection Circuit 18 Figure 6 BeagleBone CANBus Cape EEPROM 19 Figur...

Page 8: ...BeagleBone CANBus Cape System Reference Manual Revision A1 Page 8 of 21 NOTES...

Page 9: ...ons in this document are Section 2 0 Change History Provides tracking for the changes made to the System Reference Manual Section 3 0 Overview This is a high level overview of the BeagleBone CANBus Ca...

Page 10: ...em Reference Manual Revision A1 Page 10 of 21 2 0 Change History 2 1 Change History Table 1 tracks the changes made for each revision of this document Table 1 Change History Rev Changes Date By A1 Ini...

Page 11: ...or to provide a Controller Area Network CAN interface that meets the specifications of ISO11898 The CAN Bus interface can be accessed via a standard D Sub 9 female serial connector This connector is l...

Page 12: ...ne CANBus Cape 3 3 Repairs If you feel the board is in need of repair follow the RMA Request process found at http www beagleboardtoys com support rma Do not send the board in for repair until an RMA...

Page 13: ...d provides a high level description of the major components and interfaces that make up the board Table 2 provides a list of the BeagleBone CANBus Cape s features Table 2 BeagleBone CANBus Cape Featur...

Page 14: ...Cape uses an RSZ 3 305HP to provide isolated power sources for the CAN transceiver ISO1050 ISO1050 is a galvanically isolated CAN transceiver that isolates grounds and prevents noise currents from en...

Page 15: ...D is green when lit 4 4 Mechanical Specifications Size 4 00 x 2 50 Layers 4 PCB thickness 062 RoHS Compliant Yes 4 5 Electrical Specifications Table 3 is the electrical specification of the external i...

Page 16: ...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 insul...

Page 17: ...Cape Figure 4 CAN Transceiver Circuit 5 3 Isolated Power and Ground The CANBus Cape uses an isolated DC DC converter RSZ 3 305HP to convert 3 3V to 5 0V for the CAN transceiver RSZ 3 305HP features a...

Page 18: ...lection circuit on the CANBus Cape Figure 5 UART Selection Circuit 5 5 EEPROM The BeagleBone CANBus Cape has an EEPROM containing information that will allow the SW to identify the board and to config...

Page 19: ...rd Address line A2 is always tied high This sets the allowable address range for the expansion cards to 0x54 to 0x57 All other I2C addresses can be used by the user in the design of their Capes But th...

Page 20: ...evision A1 Page 20 of 21 6 0 Mechanical Information This section provides information on the mechanical aspect of the BeagleBone CANBus Cape Figure 7 is the dimensions of the BeagleBone CANBus Cape Fi...

Page 21: ...wed via resources at BeagleBoard org discuss THERE IS NO WARRANTY FOR THE DESIGN MATERIALS TO THE EXTENT PERMITTED BY APPLICABLE LAW EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND O...

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