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
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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-
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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.