Phytec phyCORE-AM335x User manual

A product of a PHYTEC Technology Holding company
phyCORE-AM335x
Hardware Manual
Document No: L-771e_1
SOM Product No:PCM-051
SOM PCB No:1358.2
Carrier Board Product No:PCM-953
Carrier Board PCB No:1359.2
GPIO Expansion Board Product No: PCM-957
Edition November 2012

phyCORE-AM335x
© PHYTEC Messtechnik GmbH 2012 L-771e_1
In this manual are descriptions for copyrighted products that are not explicitly indicated as such. The absence
of the trademark (™), registered trademark (®) and copyright (©) symbols does not imply that a product is not
protected. Additionally, registered patents and trademarks are similarly not expressly indicated in this manual.
The information in this document has been carefully checked and is believed to be entirely reliable. However,
PHYTEC Messtechnik GmbH assumes no responsibility for any inaccuracies. PHYTEC Messtechnik GmbH neither
gives any guarantee nor accepts any liability whatsoever for consequential damages resulting from the use of
this manual or its associated product. PHYTEC Messtechnik GmbH reserves the right to alter the information
contained herein without prior notification and accepts no responsibility for any damages which might result.
Additionally, PHYTEC Messtechnik GmbH offers no guarantee nor accepts any liability for damages arising from
the improper usage or improper installation of the hardware or software. PHYTEC Messtechnik GmbH further
reserves the right to alter the layout and/or design of the hardware without prior notification and accepts no
liability for doing so.
© Copyright 2012 PHYTEC Messtechnik GmbH, D-55129 Mainz.
Rights - including those of translation, reprint, broadcast, photomechanical or similar reproduction and stor-
age or processing in computer systems, in whole or in part - are reserved. No reproduction may occur without
the express written consent from PHYTEC Messtechnik GmbH.
First Edition November 2012
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phyCORE-AM335x Table of content
L-771e_1 © PHYTEC Messtechnik GmbH 2012
Table of Contents
1 Conventions, Abbreviations and Acronyms .............................................. 1
2 Preface............................................................................................... 4
3 Part I: PCM-051/phyCORE-AM335x System on Module ............................... 8
3.1 Introduction ................................................................................. 8
3.1.1Block Diagram.......................................................................10
3.1.2Component Placement Diagram ................................................11
3.1.3Minimum Requirements to Operate the phyCORE-AM335x...............13
3.2 Pin Description.............................................................................14
3.3 Jumpers......................................................................................25
3.4 Power .........................................................................................30
3.4.1Primary System Power (VDD_5V_IN) ..........................................30
3.4.2Backup Power (VBAT_IN_4RTC).................................................30
3.4.3Power Management IC (U4)......................................................30
3.4.3.1 Power Domains............................................................31
3.4.3.2 Real Time Clock (RTC)....................................................32
3.4.3.3 Power Management ......................................................33
3.4.3.4 External Battery Charging..............................................33
3.4.4Reference Voltages.................................................................33
3.5 Real-Time Clock Options (RTC) .........................................................34
3.5.1PMIC RTC ..............................................................................34
3.5.2External RTC..........................................................................34
3.5.3AM335x RTC ..........................................................................34
3.5.4Power-On Wake .....................................................................34
3.6 System Configuration and Booting ...................................................35
3.7 System Memory ............................................................................37
3.7.1DDR3-SDRAM (U7, U9) ............................................................37
3.7.2NAND Flash Memory (U10) .......................................................37
3.7.2.1 NAND Flash Lock Control (J2) .........................................38
3.7.3I2C EEPROM (U6) ...................................................................38
3.7.3.1 Setting the EEPROM Lower Address Bits (J7, J8).................39
3.7.3.2 EEPROM Write Protection Control (J9) ..............................39
3.7.4SPI Flash Memory (U5)............................................................40
3.7.4.1 SPI Write-Protect Control (J4) ........................................40
3.7.4.2 SPI Hold Control (J3)....................................................40
3.7.5Memory Model.......................................................................40

Table of content phyCORE-AM335x
© PHYTEC Messtechnik GmbH 2012 L-771e_1
3.8 SD / MMC Card Interfaces................................................................ 41
3.9 Serial Interfaces ........................................................................... 42
3.9.1Universal Asynchronous Receiver/Transmitter Interfaces (UARTs) ... 42
3.9.2USB OTG Interface.................................................................. 43
3.9.3Ethernet Interfaces ................................................................ 44
3.9.3.1 Ethernet1 .................................................................. 44
3.9.3.1.1 Configuring the Ethernet1 Interface Mode ................. 45
3.9.3.2 Ethernet 2.................................................................. 46
3.9.4Profibus............................................................................... 47
3.9.5I2C Interface ........................................................................ 48
3.9.6SPI Interfaces ....................................................................... 48
3.9.7Controller Area Network (CAN) Interfaces ................................... 49
3.9.8Multichannel Audio Serial Ports (McASP) .................................... 50
3.10 General Purpose I/Os..................................................................... 51
3.11 Analog Inputs .............................................................................. 52
3.12 Debug Interface (X2)..................................................................... 53
3.13 Display Interface .......................................................................... 55
3.13.1Parallel Display Interface....................................................... 55
3.13.2Touch Screen Controller ........................................................ 56
3.14 Technical Specifications................................................................. 57
3.15 Hints for Integrating and Handling the phyCORE-AM335x ..................... 59
3.15.1Integrating the phyCORE-AM335x ........................................... 59
3.15.2Handling the phyCORE-AM335x .............................................. 61
4 Part II: PCM-953 / phyCORE-AM335x Carrier Board ..................................62
4.1 Introduction................................................................................ 62
4.1.1Concept of the phyCORE-AM335x Carrier Board ............................ 63
4.2 Overview of the phyCORE-AM335x Carrier Board Peripherals .................. 64
4.2.1Connectors and Pin Headers..................................................... 65
4.2.2Switches .............................................................................. 66
4.2.3LEDs ................................................................................... 68
4.2.4Jumpers .............................................................................. 70
4.2.5Carrier Board Bus Enable Decoder ............................................. 75
4.3 Functional Components of the phyCORE-AM335x Carrier Board .............. 78
4.3.1phyCORE-AM335x SOM Connectivity (X1 and X2) .......................... 78
4.3.2Power.................................................................................. 80
4.3.2.1 Wall Adapter Input (X3) ................................................ 81
4.3.2.2 Power Management...................................................... 82

phyCORE-AM335x Table of content
L-771e_1 © PHYTEC Messtechnik GmbH 2012
4.3.2.3 VBAT .........................................................................82
4.3.3Ethernet Connectivity .............................................................82
4.3.3.1 Ethernet 1 (X12)..........................................................83
4.3.3.2 Ethernet 2 (X9)............................................................84
4.3.4EtherCAT (X10 and X11)...........................................................85
4.3.5Profibus (X19).......................................................................86
4.3.6RS-232 (X18) ........................................................................87
4.3.7CAN (X13) ............................................................................88
4.3.8Universal Serial Bus (USB) (X7 and X8).......................................89
4.3.8.1 USB0 (X7) ..................................................................89
4.3.8.2 USB1 (X8) ..................................................................90
4.3.9I2C......................................................................................91
4.3.10SPI (X5) .............................................................................92
4.3.11JTAG (X21)..........................................................................93
4.3.12Display / Touch (X4 and X31) ..................................................94
4.3.12.1PHYTEC Display Interface (PDI) Data Connector (X4) ..........96
4.3.12.2PHYTEC Display Interface (PDI) Power Connector (X31).......99
4.3.12.3AM335x LCD Interface Display (X40) ............................. 100
4.3.12.4Touch Screen Connectivity .......................................... 100
4.3.13Secure Digital Memory (SD) / MultiMedia Card (MMC) Slot (X20) .. 101
4.3.14Audio (X14, X15, X16, X17) .................................................. 102
4.3.15WiFi (X27)......................................................................... 103
5 Part III: PCM-957 GPIO Expansion Board ..............................................106
5.1 GPIO Expansion Board Analog Signals ............................................. 106
5.2 GPIO Expansion Board Control Signals............................................. 107
5.3 GPIO Expansion Board GPIO Signals ................................................ 108
5.4 GPIO Expansion Board GPMC Signals ............................................... 109
5.5 GPIO Expansion Board Power Signals .............................................. 109
5.6 GPIO Expansion Board Serial Interfaces ........................................... 110
5.7 Signals Not Connected to the GPIO Expansion Board .......................... 111

phyCORE-AM335x List of tables
L-771e_1 © PHYTEC Messtechnik GmbH 2012
List of Tables
Table 1: Abbreviations and Acronyms used in this Manual .................................................. 2
Table 2: Types of Signals ............................................................................................. 3
Table 3: Pinout of the phyCORE-Connector X3, Row A .......................................................16
Table 4: Pinout of the phyCORE-Connector X3, Row B .......................................................18
Table 5: Pinout of the optional phyCORE-Connector X1, Row A ...........................................20
Table 6: Pinout of the optional phyCORE-Connector X1, Row B ...........................................23
Table 7: SOM Jumper Settings .....................................................................................27
Table 8: External Supply Voltages.................................................................................31
Table 9: PMIC Generated Voltages ................................................................................31
Table 10: Power Management Signals .............................................................................33
Table 11: Boot Device Order of AM335x Module ................................................................36
Table 12: NAND GPMC Signal Map...................................................................................37
Table 13: NAND Flash Lock Control via J2.........................................................................38
Table 14: U6 EEPROM I2C Address via J7 and J8 ................................................................39
Table 15: EEPROM Write Protection States Via J9...............................................................39
Table 16: SPI Flash Write-Protection via J4 ......................................................................40
Table 17: SPI Hold Control via J3 ...................................................................................40
Table 18: SD / MMC0 Interface Signal Locations................................................................41
Table 19: UART Signal Locations....................................................................................42
Table 20: USB OTG Signal Locations................................................................................43
Table 21: Ethernet1 Signal Locations..............................................................................44
Table 22: Ethernet1 TTL Signal Locations.........................................................................45
Table 23: Jumper Configurations for MII and RMII modes ...................................................45
Table 24: Resistor Configurations for MII and RMII modes...................................................46
Table 25: Crystal Configurations for MII and RMII modes ....................................................46
Table 26: Ethernet 2 Signal Locations.............................................................................47
Table 27: Profibus Signal Location Options ......................................................................47
Table 28: I2C Interface Signal Locations..........................................................................48
Table 29: I2C Addresses in Use ......................................................................................48
Table 30: SPI0 Interface Signal Locations........................................................................48
Table 31: DCAN0 and DCAN1 Signal Locations...................................................................49
Table 32: McASP Signal Locations ..................................................................................50

phyCORE-AM335x
L-771e_1 © PHYTEC Messtechnik GmbH 2012
Table 33: Dedicated GPIO Signal Locations ......................................................................51
Table 34: Analog Input Signals......................................................................................52
Table 35: JTAG Connector X2 Signal Assignment ...............................................................54
Table 36: Location of the JTAG Signals on the optional phyCORE-Connector X1 .......................54
Table 37: Parallel Display Interface Signal Locations..........................................................55
Table 38: AIN[3:0] Signal Locations ...............................................................................56
Table 39: phyCORE-AM335x Carrier Board Connectors and Pin Headers..................................65
Table 40: phyCORE-AM335x Carrier Board push-buttons Descriptions....................................67
Table 41: Carrier Board Boot Configuration Switch S5 ........................................................68
Table 42: phyCORE-AM335x Carrier Board LEDs Descriptions................................................69
Table 43: phyCORE-AM335x Carrier Board Jumper Descriptions............................................72
Table 44: Interfaces Enabled with JP3 and JP4 .................................................................77
Table 45: Bus Switch Enable Status LEDs .........................................................................77
Table 46: Specifically used Pins on the phyCORE-Connector.................................................79
Table 47: VCC_3V3 Jumper Settings................................................................................81
Table 48: Voltage Domains on the Carrier Board................................................................81
Table 49: JP3 and JP4 settings ......................................................................................82
Table 50: JP3 and JP4 settings ......................................................................................86
Table 51: Profibus Jumpers ..........................................................................................87
Table 52: USB Connectors for Different Operating Modes ....................................................90
Table 53: I2C Interface Signals......................................................................................91
Table 54: I2C0 Reserved Addresses.................................................................................92
Table 55: JTAG Connector X1 Pin Descriptions ..................................................................94
Table 56: JP3 and JP4 settings ......................................................................................96
Table 57: PDI Data Connector X4 Signal Description...........................................................97
Table 58: Auxiliary Interfaces at PDI Data Connector X4......................................................98
Table 59: PDI Power Connector X31 Signal Description .......................................................99
Table 60: AM335x LCD Interface Display Connector X40 ....................................................100
Table 61: Audio Connectors ........................................................................................103
Table 62: JP3 and JP4 settings ....................................................................................104
Table 63: WiFi Module Signals (X27) .............................................................................104
Table 64: GPIO Expansion Board Analog Signal Map.........................................................106
Table 65: GPIO Expansion Board Control Signal Map ........................................................107
Table 66: GPIO Expansion Board GPIO Signal Map............................................................108

phyCORE-AM335x
© PHYTEC Messtechnik GmbH 2012 L-771e_1
Table 67: GPIO Expansion Board GPMC Signal Map ...........................................................109
Table 68: GPIO Expansion Board Power Signal Map ..........................................................109
Table 69: GPIO Expansion Board Serial Interfaces Signal Map ............................................110
Table 70: AM335x SOM Signals Not Routed to the GPIO Expansion Connector X5 ....................111

phyCORE-AM335x List of figures
L-771e_1 © PHYTEC Messtechnik GmbH 2012
List of Figures
Figure 1: Block Diagram of the phyCORE-AM335x..............................................................10
Figure 2: phyCORE-AM335x Component Placement (top view) .............................................11
Figure 3: phyCORE-AM335x Component Placement (bottom view)........................................12
Figure 4: Pinout of the phyCORE-Connector (top view, with cross section insert).....................15
Figure 5: Typical Jumper Pad Numbering Scheme..............................................................25
Figure 6: SOM Jumper Locations (top view) .....................................................................26
Figure 7: Power Supply Diagram....................................................................................32
Figure 8: JTAG Interface at X2 (top view) ........................................................................53
Figure 9: Physical Dimensions.......................................................................................57
Figure 10: Footprint of the phyCORE-AM335x ....................................................................60
Figure 11: phyCORE-AM335x Carrier Board Overview of Connectors and Buttons (top view).........64
Figure 12: Carrier Board Buttons.....................................................................................66
Figure 13: Switch S5 Location ........................................................................................67
Figure 14: Carrier Board LEDs.........................................................................................69
Figure 15: Jumper Numbering Scheme .............................................................................70
Figure 16: Carrier Board Jumper Locations........................................................................71
Figure 17: Bus Enable Jumpers and LEDs ..........................................................................76
Figure 18: phyCORE-AM335x SOM Connectivity to the Carrier Board .......................................78
Figure 19: +5 VDC Power Input Connector .........................................................................80
Figure 20: Ethernet1 Connector......................................................................................83
Figure 21: Ethernet 2 Connector .....................................................................................84
Figure 22: EtherCAT Connectors ......................................................................................85
Figure 23: Profibus Connector ........................................................................................86
Figure 24: RS-232 Connector..........................................................................................87
Figure 25: CAN Connector and Jumpers ............................................................................88
Figure 26: USB Connectors and Jumpers...........................................................................89
Figure 27: X5 GPIO Expansion Board Connectors ................................................................92
Figure 28: JTAG Connector.............................................................................................93
Figure 29: Display Connectors ........................................................................................95
Figure 30: SD / MMC Connector (X20) ............................................................................101
Figure 31: Audio Connectors (X14, X15, X16, X17)............................................................102
Figure 32: WiFi Connector............................................................................................103

Conventions, Abbreviations and Acronyms phyCORE-AM335x
1©PHYTEC Messtechnik GmbH 2012 L-771e_1
1 Conventions, Abbreviations and Acronyms
This hardware manual describes the PCM-051 System on Module in the following referred to as
phyCORE-AM335x. The manual specifies the phyCORE-AM335x's design and function. Precise specifications for
the Texas Instruments AM335x microcontrollers can be found in Texas Instrument's AM335x Data Sheet and
Technical Reference Manual.
Conventions
The conventions used in this manual are as follows:
•Signals that are preceded by a "n", "/", or “#” character (e.g.: nRD, /RD, or #RD), or that have a dash on
top of the signal name (e.g.: RD) are designated as active low signals. That is, their active state is when they
are driven low, or are driving low.
•A "0" indicates a logic zero or low-level signal, while a "1" represents a logic one or high-level signal.
•The hex-numbers given for addresses of I2C devices always represent the 7 MSB of the address byte.
The correct value of the LSB which depends on the desired command (read (1), or write (0)) must be added
to get the complete address byte. E.g. given address in this manual 0x41 => complete address byte = 0x83
to read from the device and 0x82 to write to the device
•Tables which describe jumper settings show the default position in bold, blue text
•Text in blue italic indicates a hyperlink within, or external to the document. Click these links to quickly jump
to the applicable URL, part, chapter, table, or figure.
•References made to the phyCORE-Connector always refer to the high density Samtec connectors on the
undersides of the phyCORE-AM335x
Note:
We refrain from providing detailed part specific information within this manual, which can be subject to
continuous changes, due to part maintenance for our products. Please read the paragraph "Product Change
Management and information in this manual on parts populated on the SOM" within the Section 2.
Note:
The BSP delivered with the phyCORE-AM335x usually includes drivers and/or software for controlling all
components such as interfaces, memory, etc.. Therefore programming close to hardware at register level is
not necessary in most cases. For this reason, this manual contains no detailed description of the controller's
registers, or information relevant for software development. Please refer to the AM335x Reference Manual, if
such information is needed to connect customer designed applications.

phyCORE-AM335x Conventions, Abbreviations and Acronyms
L-771e_1 © PHYTEC Messtechnik GmbH 2012 2
Abbreviations and Acronyms
Many acronyms and abbreviations are used throughout this manual. Use the table below to navigate unfamiliar
terms used in this document.
Abbreviation Definition
BSP Board Support Package (Software delivered with the Development Kit including an operating
system (Windows or Linux) preinstalled on the module and Development Tools).
CB Carrier Board; used in reference to the phyCORE-AM335x Development Kit Carrier Board.
DFF D flip-flop
EMB External memory bus
EMI Electromagnetic interference
GPI General purpose input
GPIO General purpose input and output
GPO General purpose output
IRAM Internal RAM; the internal static RAM on the Texas Instruments AM335x microcontroller
J Solder jumper; these types of jumpers require solder equipment to remove and place
JP Solderless jumper; these types of jumpers can be removed and placed by hand with no special
tools
PCB Printed circuit board
PDI PHYTEC Display Interface; defined to connect PHYTEC display adapter boards, or custom
adapters
PEB PHYTEC Extension Board
PMIC Power management IC
PoE Power over Ethernet
PoP Package on Package
POR Power-on reset
RTC Real-time clock
SMT Surface mount technology
SOM System on Module; used in reference to the PCM-051 / phyCORE-AM335x System on Module
Sx User button Sx (e.g. S1, S2, etc.) used in reference to the available user buttons, or DIP
switches on the carrier board
Sx_y Switch y of DIP switch Sx; used in reference to the DIP switch on the carrier board
VBAT SOM standby voltage input
Table 1: Abbreviations and Acronyms used in this Manual

Conventions, Abbreviations and Acronyms phyCORE-AM335x
3©PHYTEC Messtechnik GmbH 2012 L-771e_1
Different types of signals are brought out at the phyCORE-Connector. The following table lists the abbreviations
used to specify the type of a signal.
Type of Signal Description Abbr.
Power Supply voltage PWR
Ref-Voltage Reference voltage REF
USB-Power USB voltage USB
Input Digital input IN
Output Digital output OUT
Input with pull-up Input with pull-up, must only be connected to GND
(jumper or open-collector output).
IPU
Input / output Bidirectional input / output IO
5 V Input with pull-down 5 V tolerant input with pull-down 5V_PD
5 V Input with pull-up 5 V tolerant input with pull-up 5V_PU
LVDS Differential line pairs 100 Ohm LVDS Pegel LVDS
Differential 90 Ohm Differential line pairs 90 Ohm DIFF90
Differential 100 Ohm Differential line pairs 100 Ohm DIFF100
Analog Analog input or output Analog
Table 2: Types of Signals

phyCORE-AM335x Preface
L-771e_1 © PHYTEC Messtechnik GmbH 2012 4
2 Preface
As a member of PHYTEC's phyCORE product family the phyCORE-AM335x is one of a series of PHYTEC System on
Modules (SOMs) that can be populated with different controllers and, hence, offers various functions and
configurations. PHYTEC supports a variety of 8-/16- and 32-bit controllers in two ways:
1. as the basis for Rapid Development Kits which serve as a reference and evaluation platform
2. as insert-ready, fully functional phyCORE OEM modules, which can be embedded directly into the user’s
peripheral hardware design
Implementation of an OEM-able SOM subassembly as the "core" of your embedded design allows you to focus
on hardware peripherals and firmware without expending resources to "re-invent" microcontroller circuitry.
Furthermore, much of the value of the phyCORE module lies in its layout and test.
Production-ready Board Support Packages (BSPs) and Design Services for our hardware will further reduce your
development time and risk and allow you to focus on your product expertise. Take advantage of PHYTEC products
to shorten time-to-market, reduce development costs, and avoid substantial design issues and risks. With this
new innovative full system solution you will be able to bring your new ideas to market in the most timely and
cost-efficient manner.
For more information go to:
www.phytec.de/de/leistungen/entwicklungsunterstuetzung.html, or
www.phytec.eu/europe/oem-integration/evaluation-start-up.html

Preface phyCORE-AM335x
5©PHYTEC Messtechnik GmbH 2012 L-771e_1
Ordering Information
The part numbering of the phyCORE has the following structure1:
1. The structure shows the ordering options available as of the printing of this manual. Additional ordering options may have been
added. Please contact our sales team to ´get an update on the ordering options available.

phyCORE-AM335x Preface
L-771e_1 © PHYTEC Messtechnik GmbH 2012 6
In order to receive product specific information on changes and updates in the best way also in the future, we
recommend to register at
www.phytec.de/de/support/registrierung.html, or
www.phytec.eu/europe/support/registration.html
For technical support and additional information concerning your product, please visit the support section of
our web site which provides product specific information, such as errata sheets, application notes, FAQs, etc.
www.phytec.de/de/support/faq/faq-phycore-AM335x.html, or
www.phytec.eu/europe/support/faq/faq-phycore-AM335x.html
Declaration of Electro Magnetic Conformity of the PHYTEC phyCORE-AM335x
PHYTEC System on Modules (henceforth products) are designed for installation in electrical appliances or as
dedicated Evaluation Boards (i.e.: for use as a test and prototype platform for hardware/software development)
in laboratory environments.
PHYTEC products fulfill the norms of the European Union’s Directive for Electro Magnetic Conformity only in
accordance to the descriptions and rules of usage indicated in this hardware manual (particularly in respect to
the pin header row connectors, power connector and serial interface to a host-PC).
Caution:
PHYTEC products lacking protective enclosures are subject to damage by ESD and, hence, may only be
unpacked, handled or operated in environments in which sufficient precautionary measures have been taken
in respect to ESD-dangers. It is also necessary that only appropriately trained personnel (such as electricians,
technicians and engineers) handle and/or operate these products. Moreover, PHYTEC products should not be
operated without protection circuitry if connections to the product's pin header rows are longer than 3 m.
Caution:
Implementation of PHYTEC products into target devices, as well as user modifications and extensions of
PHYTEC products, is subject to renewed establishment of conformity to, and certification of, Electro Magnetic
Directives. Users should ensure conformance following any modifications to the products as well as imple-
mentation of the products into target systems.

Preface phyCORE-AM335x
7©PHYTEC Messtechnik GmbH 2012 L-771e_1
Product Change Management and information in this manual on parts populated on the SOM
When buying a PHYTEC SOM, you will, in addition to our HW and SW offerings, receive a free obsolescence
maintenance service for the HW we provide.
Our PCM (Product Change Management) Team of developers is continuously processing all incoming PCN's
(Product Change Notifications) from vendors and distributors concerning parts which are being used in our
products.
Possible impacts to the functionality of our products, due to changes of functionality or obsolesce of a certain
part, are being evaluated in order to take the right masseurs in purchasing or within our HW/SW design.
Our general philosophy here is: We never discontinue a product as long as there is demand for it.
Therefore we have established a set of methods to fulfill our philosophy:
Avoiding strategies
•Avoid changes by evaluating long-livety of a parts during design in phase
•Ensure availability of equivalent second source parts
•Stay in close contact with part vendors to be aware of roadmap strategies
Change management in case of functional changes
•Avoid impacts on Product functionality by choosing equivalent replacement parts
•Avoid impacts on Product functionality by compensating changes through HW redesign or backward
compatible SW maintenance
•Provide early change notifications concerning functional relevant changes of our Products
Change management in rare event of an obsolete and non replaceable part
•Ensure long term availability by stocking parts through last time buy management according to product
forecasts
•Offer long term frame contract to customers
Therefore we refrain from providing detailed part specific information within this manual, which can be
subject to continuos changes, due to part maintenance for our products.
In order to receive reliable, detailed and up-to-date information concerning parts used for our product,
please contact our support team for through the given contact information within this manual.

phyCORE-AM335x Part I: PCM-051/phyCORE-AM335x System on Module
L-771e_1 © PHYTEC Messtechnik GmbH 2012 8
3 Part I: PCM-051/phyCORE-AM335x System on Module
Part I of this three part manual provides detailed information on the phyCORE-AM335x System on Module (SOM)
designed for custom integration into customer applications. The information in the following chapters is appli-
cable to the 1358.2 PCB revision of the phyCORE-AM335x SOM.
3.1 Introduction
The phyCORE-AM335x belongs to PHYTEC’s phyCORE System on Module family. The phyCORE SOMs represent the
continuous development of PHYTEC System on Module technology. Like its mini-, micro- and nanoMODUL
predecessors, the phyCORE boards integrate all core elements of a microcontroller system on a subminiature
board and are designed in a manner that ensures their easy expansion and embedding in peripheral hardware
developments.
As independent research indicates that approximately 70% of all EMI (Electro Magnetic Interference) problems
stem from insufficient supply voltage grounding of electronic components in high frequency environments, the
phyCORE board design features an increased pin package. The increased pin package allows dedication of
approximately 20% of all connector pins on the phyCORE boards to ground. This improves EMI and EMC charac-
teristics and makes it easier to design complex applications meeting EMI and EMC guidelines using phyCORE
boards even in high noise environments.
phyCORE boards achieve their small size through modern SMD technology and multi-layer design. In accordance
with the complexity of the module, 0402-packaged SMD components and laser-drilled microvias are used on the
boards, providing phyCORE users with access to this cutting edge miniaturization technology for integration
into their own design.
The phyCORE-AM335x is a subminiature (44 mm x 50 mm) insert-ready System on Module populated with the
Texas Instruments AM335x microcontroller. Its universal design enables its insertion in a wide range of
embedded applications. All controller signals and ports extend from the controller to high-density pitch
(0.5 mm) connectors aligning two sides of the board, allowing it to be plugged like a "big chip" into a target
application.
Precise specifications for the controller populating the board can be found in the applicable controller Technical
Reference Manual or datasheet. The descriptions in this manual are based on the Texas Instruments AM335x.
No description of compatible microcontroller derivative functions is included, as such functions are not relevant
for the basic functioning of the phyCORE-AM335x.
The phyCORE-AM335x offers the following features:
•Insert-ready, sub-miniature (44 mm x 50 mm) System on Module (SOM) subassembly in low EMI design,
achieved through advanced SMD technology
•Populated with the Texas Instruments AM335x microcontroller (ZCZ 324-pin PBGA package)
•Max. 720 MHz core clock frequency
•Boot from NAND Flash or SPI Flash
•Controller signals and ports extend to two high-density (0.5 mm) Samtec connectors aligning two sides of
the board, enabling it to be plugged like a "big chip" into target application
•Single supply voltage of 5 V (max. 600 mA) with on-board power management
•All controller required supplies generated on board
•Improved interference safety achieved through multi-layer PCB technology and dedicated ground pins

Part I: PCM-051/phyCORE-AM335x System on Module phyCORE-AM335x
9©PHYTEC Messtechnik GmbH 2012 L-771e_1
•General-Purpose Memory Controller Bus (GPMC): flexible 8/16-bit asynchronous memory interface with up
to 7 chip-select signals.
•128 MB (up to 512 MB) on-board NAND Flash1
•8 MB (up to 32 MB) on-board SPI Flash1
•256 MB (up to 1 GB) DDR3 SDRAM1
•4 kB (up to 32 kB) I2C EEPROM1
•One serial interface (TTL)
•Two High-Speed USB OTG interfaces
•One 10/100 MBit Ethernet interface. Either with Ethernet transceiver on the phyCORE-AM335x allowing for
direct connection to an existing Ethernet network, or without on-board transceiver and provision of the
RMII signals at TTL-level at the phyCORE-Connector instead2
•One 10/100/1000 RGMII Ethernet interface. The TTL-level inteface is available at the optional phyCORE
connector.
•One I2C interface
•One SPI interface
•Up to two CAN interfaces
•LCD Interface Display Driver with an integrated touch interface and up to 24 data bits
•Up to two multichannel audio serial interfaces (McASP)
•Support of standard 20 pin debug interface through JTAG connector2
•One SD/MMC card interfaces
•On-board power management IC with integrated RTC
•Real-Time Clock2
1. The maximum memory size listed is as of the printing of this manual. Please contact PHYTEC for more information about additional,
or new module configurations available.
2. Please refer to the order options described in the Preface, or contact PHYTEC for more information about additional module
configurations.
Caution:
Samtec connectors guarantee optimal connection and proper insertion of the phyCORE-AM335x. Please make
sure that the phyCORE-AM335x is fully plugged into the matting connectors of the carrier board. Otherwise
individual signals may have bad, or no contact.

phyCORE-AM335x Part I: PCM-051/phyCORE-AM335x System on Module
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3.1.1 Block Diagram
Figure 1: Block Diagram of the phyCORE-AM335x

Part I: PCM-051/phyCORE-AM335x System on Module phyCORE-AM335x
11 © PHYTEC Messtechnik GmbH 2012 L-771e_1
3.1.2 Component Placement Diagram
Figure 2: phyCORE-AM335x Component Placement (top view)