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BeagleBone A6 System Reference Manual

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Table Of Contents

Table of Contents

Table of Contents
Figures
Tables
Introduction
Change History
Table 1. Change History
Rev A5 Vs. A6
PCB Changes
Design Changes
Rev A4 Vs. A5
PCB Changes
Design Changes
Production Changes
Rev A3 Vs. A4
PCB Changes
Design Changes
Known Issues
Beaglebone Overview
Beaglebone Expansion
Beaglebone Design Material
In the Box
Beaglebone Features and Specification
Table 2. Beaglebone Features
Board Component Locations
Figure 1. Top Side Components
Figure 2. Bottom Side Components
Board Connector and Indicator Locations
Figure 3. Board Connector and Indicators
Beaglebone Design Specification
Processor
Memory
Power Management
Pc Usb Interface
Serial Debug Port
JTAG Port
USB0 Port
Microsd Connector
Usb1 Port
Usb Client Port
Power Sources
Reset Button
Indicators
Cti Jtag Header
Expansion Interface
Main Board Expansion Header
Cape Expansion Boards
Figure 4. Main Board Expansion Connector
Exposed Functions
Lcd
Gpmc
Mmc1
Spi
I2C
Serial Ports
A/D Converters
Gpio
CAN Bus
5.3.10 Timers
5.3.11 Pwm
Detailed Board Design
System Block Diagram
Processor
Figure 5. System Block Diagram
Processor Block Diagram
Figure 6. Processor Block Diagram
System Power
Tps65217B Pmic
Figure 7. Power Subsection Block Diagram
Figure 8. TPS65217B Block Diagram
5V DC Power Input
USB Power
Figure 9. 5V DC Power Input
Power Source Selection
Power Consumption
Figure 10. USB Power Input
Table 3. Beaglebone Power Consumption(Ma@5V)
Power Sequencing
TPS65217B Power up
Figure 11. Power Sequencing
Voltage Rails
Figure 12. RTC_PORZ Control
Power Indicator LED
6.3.10 Expansion 3.3V LDO
Current Measurement
SYS_5V Connection
Figure 13. Expansion 3.3V Regulator
SYS_VOLT Connection
MUX_OUT Connection
Current Calculation
Figure 14. Current Measurement
Two Port Usb Hub
Processor USB Port
HUB Power
Figure 15. USB HUB Design
Crystal and Reset
FT2232H Serial Adapter
Processor USB Port
Ft2232H Usb to Serial Adapter
Eeprom
Figure 16. FT2232H Design
Jtag
Serial Port
256Mb Ddr2 Memory
Table 4. DDR Addressing
DDR 2 Design
Figure 17. DDR Device Block Diagram
Figure 18. DDR Design
DDR VTP Termination Resistor
User Leds
Figure 19. User LEDS
10/100 Ethernet
Ethernet PHY Design
Table 5. User LED Control
Processor Signal Description
Figure 20. 10/100 Ethernet PHY Design
Table 6. Processor Ethernet Signals
Clocking Mode
PHY Mode
Figure 21. 10/100 Ethernet PHY Default Settings
MDIO Interface
PHY Reset
Status Leds
Power
Usb Host
USB Host Design
Figure 22. USB Host Design
Sd Connector
Eeprom
Figure 23. SD Connector Design
Figure 24. EEPROM Design Rev A3,A4, and A5
Table 7. EEPROM Contents
Adc Interface
6.12.1 ADC Inputs
6.12.2 VDD_ADC Interface
Figure 25. EEPROM Design Rev A6
Expansion Headers
6.13.1 Expansion Header P8
Table 8. Expansion Header P8 Pinout
6.13.2 P8 Signal Pin Mux Options
Table 9. P8 Mux Options Modes 0-3
Table 10. P8 Mux Options Modes 4-7
6.13.3 Expansion Header P9
Table 11. Expansion Header P9 Pinout
Table 12. P9 Mux Options Modes 0-3
Table 13. P9 Mux Options Modes 4-7
6.13.4 PMIC Expansion Header
6.13.5 Backlight Interface
Figure 26. PMIC Expansion Header
Figure 27. Backlight Circuitry
6.13.6 Battery Interface
Figure 28. Battery Circuitry
Cape Board Support
Eeprom
EEPROM Address
I2C Bus
Figure 29. Expansion Board EEPROM no Write Protect
EEPROM Write Protect
Figure 30. Expansion Board EEPROM Write Protect
EEPROM Data Format
Table 14. Expansion Board EEPROM
Pin Usage
Table 15. EEPROM Pin Usage
Pin Usage Consideration
Boot Pins
Figure 31. Expansion Boot Pins
Expansion Connectors
Non-Stacking Headers-Single Cape
Figure 32. Single Expansion Connector
Battery Connector- Single
Figure 33. Single Cape Expansion Connector
Table 16. Single Cape Connectors
Main Expansion Headers-Stacking
Figure 34. Battery/Backlight Expansion Connector
Figure 35. Expansion Connector
Table 17. Single Cape Backlight Connectors
Battery Connector Stacking
Figure 36. Stacked Cape Expansion Connector
Table 18. Stacked Cape Connectors
Stacked Capes W/Signal Stealing
Retention Force
Figure 37. Stacked Battery Expansion Connector
Figure 38. Stacked W/Signal Stealing Expansion Connector
Table 19. Stacked Cape Connectors
Beaglebone Female Connectors
Signal Usage
Figure 39. Connector Pin Insertion Depth
Cape Power
Main Board Power
Table 20. Expansion Voltages
Expansion Board External Power
Mechanical
Standard Cape Size
Extended Cape Size
Figure 40. Cape Board Dimensions
Enclosures
Board Setup
Creatinga Sd Card
Usb Powered Setup
DC Powered Setup
Advanced Test
Equipment Needed
Procedure
Debugging
Software Support
Tutorials
Reinstalling the Angstrom Image
Rebuilding the Angstrom Image
10.0 Beaglebone Mechanical Specification
Figure 41. Board Top Profile
Figure 42. Board Bottom Profile
11.0 Design Information

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BeagleBone System Reference

REF: BBONE_SRM

Rev A6.0.0

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BeagleBone Rev A6

System Reference Manual

Revision 0.0

May 9, 2012

Send all comments and errors to the author:

Gerald Coley

gerald@beagleboard.org

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