seeed studio BeagleBone Green User manual

REF: BBONEGRN_SRM BeagleBone Green
System Reference Manual Rev v1
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BeagleBone Green
System
Reference Manual
Revision v1
July 22, 2015
Reference to the BBB_SRM
THIS DOCUMENT

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System Reference Manual Rev v1
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This work is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported
License. To view a copy of this license, visit http://creativecommons.org/licenses/by-
sa/3.0/ or send a letter to Creative Commons, 171 Second Street, Suite 300, San
Francisco, California, 94105, USA.
All derivative works are to be attributed to Gerald Coley of BeagleBoard.org.
For more information, see http://creativecommons.org/license/results-
one?license_code=by-sa
This document is derived from work by Gerald Coley ([e-mail]), for
hardware questions, please send your email to XiangNan Qu ([email protected]),
for software and ecosystem questions, please direct to Jason Kridner
([email protected]rg) and http://beagleboard.org/discuss.
Send all comments and errors concerning this document to the author at
[email protected]
All information in this document is subject to change without notice.
For an up to date version of this document refer to:
http://www.seeedstudio.com/wiki/beaglebone_green

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BEAGLEBONE DESIGN
These design materials referred to in this document are *NOT SUPPORTED* and DO
NOT constitute a reference design. Only “community” support is allowed 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/OR OTHER PARTIES PROVIDE THE DESIGN MATERIALS “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 OR CORRECTION.
This board was designed as an evaluation and development tool. It was not designed with
any other application in mind. As such, the design materials that are provided which
include schematic, BOM, and PCB files, may or may not be suitable for any other purposes.
If used, the design material becomes your responsibility as to whether or not it meets
your specific needs or your specific applications and may require changes to meet your
requirements.

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Table of Contents
1.0 Introduction 6
2.0 Change History 6
2.1 Document Change History ................................................................................6
3.0 Connecting Up Your BeagleBone Green 7
3.1 What’s In the Box..........................................................................................7
3.2 Main Connection Scenarios ...........................................................................8
3.3 Tethered To A PC ...........................................................................................8
3.3.1 Connect the Cable to the Board ..................................................................... 9
3.3.2 Accessing the Board as a Storage Drive........................................................ 11
4.0 BeagleBone Green Overview 11
4.1 BeagleBone Black Compatibility ..................................................................11
4.2 BeagleBone Green Features and Specification .............................................12
4.3 Board Component Locations .......................................................................13
4.3.1 Connectors, LEDs, and Switches................................................................. 13
4.3.2 Key Components......................................................................................... 14
5.0 BeagleBone Green High Level Specification 15
5.1 Block Diagram...........................................................................................15
5.2 Processor....................................................................................................16
5.3 Memory......................................................................................................16
5.3.1 512MB DDR3L............................................................................................... 16
5.3.2 4KB EEPROM................................................................................................. 16
5.3.3 4GB Embedded MMC ................................................................................... 16
5.3.4 MicroSD Connector ...................................................................................... 16
5.3.5 Boot Modes .................................................................................................. 17
5.4 Power Management....................................................................................17
5.5 PC USB Interface .........................................................................................18
5.6 Serial Debug Port ........................................................................................18
5.7 USB1 Host Port ...........................................................................................18
5.8 Power Sources ............................................................................................18
5.9 Reset Button...............................................................................................19
5.10 Power Button..............................................................................................19

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5.11 Indicators .................................................................................................19
5.12 CTI JTAG Header..........................................................................................20
5.13 Grove Interfaces..........................................................................................20
5.14 Cape Board Support ....................................................................................20
5.15 Expansion Board External Power .................................................................21
6.0 BeagleBone Green Mechanical  22
6.1 Dimensions and Weight ............................................................................22
6.2 Board Dimensions.......................................................................................23
7.0 Pictures 24
8.0 Support Information 26
8.1 Hardware Design ........................................................................................26
8.2 Software Updates .......................................................................................26
Tables
Table 1.Change History 6
Table 2.BeagleBone Green Features 12
Figures
Figure 1. In The Box 7
Figure 2. Tethered Configuration 8
Figure 3. USB Connection to the Board 9
Figure 4. Board Power LED 10
Figure 5. Board Boot Status 10
Figure 6. Connectors, LEDs and Switches 13
Figure 7. Key Components 14
Figure 8. BeagleBone Green Block diagram 15
Figure 9. Board Dimensions 23
Figure 10. Top Side24
Figure 11. Bottom Side 25

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1.0 Introduction
This document is the System Reference Manual for the BeagleBone Green and covers its
use and design. The board will primarily be referred to in the remainder of this document
simply as the board, although it may also be referred to as the BeagleBone Green as a
reminder. There are also references to the original BeagleBone as well, and will be
referenced as simply BeagleBone.
This design is subject to change without notice as we will work to keep improving the
design as the product matures based on feedback and experience. Software updates will
be frequent and will be independent of the hardware revisions and as such not result in a
change in the revision number.
Make sure you check the support Wiki frequently for the most up to date information.
http://www.seeedstudio.com/wiki/beaglebone_green
2.0 Change History
This section describes the change history of this document and board. Document changes
are not always a result of a board change. A board change will always result in a document
change.
2.1 Document Change History
Table 1. Change History
REV
Description
Date
By
V1
Production release
June 3, 2015
QXN

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3.0 Connecting Up Your BeagleBone Green
This section provides instructions on how to hook up your board. Two scenarios will be
discussed:
1) Tethered to a PC and
2) As a standalone development platform in a desktop PC configuration.
3.1 What’s In the Box
In the box you will find three main items as shown in Figure 1.
BeagleBone Green
Micro USB to USB Type A Cable
Instruction card with link to the support WIKI address.
This is sufficient for the tethered scenario and creates an out of box experience where the
board can be used immediately with no other equipment needed.
Figure 1. In The Box

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3.2 Main Connection Scenarios
This section will describe how to connect the board for use. This section is basically a
slightly more detailed description of the Quick Start Guide that came in the box. There is
also a Quick Start Guide document on the board that should also be referred to. The intent
here is that someone looking t purchase the board will be able to read this section and
get a good idea as to what the initial set up will be like.
The board can be configured in several different ways, but we will discuss the most
common scenarios as described in the Quick Start Guide card that comes in the box.
3.3 Tethered To A PC
In this configuration, the board is powered by the PC via the provided USB cable--no other
cables are required. The board is accessed either as a USB storage drive or via the browser
on the PC. You need to use either Firefox or Chrome on the PC, IEx will not work properly.
Figure 2 shows this configuration.
Figure 2. Tethered Configuration

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All the power for the board is provided by the PC via the USB cable. In some instances, the
PC may not be able to supply sufficient power for the board. In that case, an external 5VDC
power supply can be used to power the board through VDD_5V pin in P9 connector, but
this should rarely be necessary.
3.3.1 Connect the Cable to the Board
1. Connect the small connector on the USB cable to the board as shown in Figure 4. The
connector is on the bottom side of the board.
Figure 3. USB Connection to the Board
2. Connect the large connector of the USB cable to your PC or laptop USB port.
3. The board will power on and the power LED will be on as shown in Figure 4 below.

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Figure 4. Board Power LED
4. When the board starts to the booting process started by the process of applying power,
the LEDs will come on in sequence as shown in Figure 5 below. It will take a few
seconds for the status LEDs to come on, so be patient. The LEDs will be flashing in an
erratic manner as it begins to boot the Linux kernel.
Figure 5. Board Boot Status