Eurotech Titan User manual

Issue B – December 2012 – ETH_TITAN_V2_USM
DIGITAL TECHNOLOGIES FOR A BETTER WORLD
www.eurotech.com
USER MANUAL
TITAN
Single Board Computer

TITAN - user manual
2 ETH
_
TITAN
_
V2
_
USM
WARRANTY
For Warranty terms and conditions users should contact their local Eurotech Sales Office.
TRADEMARKS
All trademarks both marked and not marked appearing in this document are the property of their respective owners.
REVISION HISTORY
Issue no. PCB Date Comments
A
V2 Issue 1 13th April 2012 First release of manual for TITAN V2.
B V2 Issue 1 17th December 2012 Corrected CV_REG table in Appendix A
© 2012 Eurotech Ltd. All rights reserved.
See Eurotech Worldwide Presence (on the back cover) for full contact details.

Table of Contents
3
Table of contents
Important user information............................................................................................................................. 5
Safety notices and warnings .......................................................................................................................... 5
Life support policy .......................................................................................................................................... 6
CE notice........................................................................................................................................................ 6
WEEE............................................................................................................................................................. 6
RoHS.............................................................................................................................................................. 7
Technical assistance...................................................................................................................................... 7
Introduction...................................................................................................................................................... 8
TITAN ‘at a glance’......................................................................................................................................... 9
TITAN features ............................................................................................................................................. 10
TITAN support products ............................................................................................................................... 13
Getting started ............................................................................................................................................... 14
Using the TITAN........................................................................................................................................... 14
Detailed hardware description ..................................................................................................................... 16
TITAN block diagram ................................................................................................................................... 16
TITAN address map ..................................................................................................................................... 17
Translations made by the MMU ................................................................................................................... 18
PXA270 processor ....................................................................................................................................... 18
PXA270 GPIO pin assignments ................................................................................................................... 20
Interrupt assignments................................................................................................................................... 25
Real time clock ............................................................................................................................................. 26
Watchdog timer ............................................................................................................................................ 27
Memory ........................................................................................................................................................ 28
SDIO............................................................................................................................................................. 29
PC/104 interface .......................................................................................................................................... 30
Flat panel display support ............................................................................................................................ 37
Audio ............................................................................................................................................................ 43
Touchscreen controller................................................................................................................................. 43
USB .............................................................................................................................................................. 44
Ethernet........................................................................................................................................................ 45
Serial COMs ports ........................................................................................................................................ 46
I²C................................................................................................................................................................. 50
Quick Capture camera interface .................................................................................................................. 51
General purpose I/O..................................................................................................................................... 52
Temperature sensor..................................................................................................................................... 52
JTAG and debug access.............................................................................................................................. 53
Power and power management.................................................................................................................... 54
Power supplies ............................................................................................................................................. 54
Processor power management .................................................................................................................... 56
Peripheral devices power management....................................................................................................... 58

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Connectors, LEDs and jumpers ................................................................................................................... 63
Connectors ................................................................................................................................................... 64
Status LEDs ................................................................................................................................................. 75
Jumpers........................................................................................................................................................ 75
Appendix A - Board version / issue ............................................................................................................. 78
Appendix B - Specification ........................................................................................................................... 80
Appendix C - Mechanical diagram ............................................................................................................... 82
Appendix D – TITAN V1I1 to V2I1 design changes .................................................................................... 83
Appendix E - Reference information ........................................................................................................... 84
Appendix F - ZEUS-FPIF details................................................................................................................... 86
Appendix G - ZEUS-FPIF-CRT details.......................................................................................................... 91
Appendix H - Ethernet Breakout details...................................................................................................... 94
Appendix I - Acronyms and abbreviations.................................................................................................. 96
Appendix J - RoHS-6 Compliance - Materials Declaration Form .............................................................. 98
Eurotech Worldwide Presence..................................................................................................................... 99

Important user information
5
Important user information
In order to lower the risk of personal injury, electric shock, fire or equipment damage, users must
observe the following precautions as well as good technical judgment, whenever this product is
installed or used.
All reasonable efforts have been made to ensure the accuracy of this document; however, Eurotech
assumes no liability resulting from any error/omission in this document, or from the use of the
information contained herein.
Eurotech reserves the right to revise this document and to change its contents at any time without
obligation to notify any person of such revision or changes.
Safety notices and warnings
The following general safety precautions must be observed during all phases of operation, service and
repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere
in this manual violates safety standards of design, manufacture and intended use of the equipment.
Eurotech assumes no liability for the customer’s failure to comply with these requirements.
The safety precautions listed below represent warnings of certain dangers of which Eurotech is aware
of. You, as the user of the product, should follow these warnings and all other safety precautions
necessary for the safe operation of the equipment in your operating environment.
Installation in cupboards and safes
In the event that the product is placed within a cupboard or safe, together with other heat generating
equipment, ensure proper ventilation.
Do not operate in an explosive atmosphere
Do not operate the equipment in the presence of flammable gases or fumes. Operation of any
electrical equipment in such an environment constitutes a definite safety hazard.
Alerts that can be found throughout this manual
The following alerts are used within this manual and indicate potentially dangerous situations:
Danger, electrical shock hazard:
Information regarding potential electrical shock hazards:
•Personal injury or death could occur. Also damage to the system, connected peripheral devices, or
software could occur if the warnings are not carefully followed.
•Appropriate safety precautions should always be used, these should meet the requirements set out
for the environment that the equipment will be deployed in.
Warning:
Information regarding potential hazards:
•Personal injury or death could occur. Also damage to the system, connected peripheral devices, or
software could occur if the warnings are not carefully followed.
•Appropriate safety precautions should always be used, these should meet the requirements set out
for the environment that the equipment will be deployed in.
Information and/or Notes:
These will highlight important features or instructions that should be observed.

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Use an appropriate power supply
Only start the product with a power supply that conforms to the voltage requirements as displayed on
the voltage label attached to the system. In case of uncertainty about the required power supply,
please contact your local Eurotech Technical Support Team (see page 7) or the electricity authority.
Use power supplies that are compliant with SELV regulation.
Use certified power cables. The power cable must fit the product, the voltage and the required current.
Position cable with care, Avoid positioning cables in places where they may be trampled on or
compressed by objects placed on it. Take particular care of the plug, power-point and outlet of power
cable.
Antistatic precautions
To avoid damage caused by ESD (Electro Static Discharge), always use appropriate antistatic
precautions when handing any electronic equipment.
Life support policy
Eurotech products are not authorized for use as critical components in life support devices or systems
without the express written approval of Eurotech.
CE notice
The product described in this manual is marked with the label in accordance with the 1999/5/EC
regulation.
Eurotech shall not be liable for use of its products with equipment (i.e. power supplies, personal
computers, etc.) that are not CE marked.
WEEE
The information below is issued in compliance with the regulations as set out in the 2002/96/EC
directive, subsequently superseded by 2003/108/EC. It refers electrical and electronic equipment and
the waste management of such products.
When disposing of a device, including all of its components, subassemblies and materials that are an
integral part of the product, you should consider the WEEE directive.
The symbol to the right has been attached to the equipment or, if this has not been
possible, on the packaging, instruction literature and/or the guarantee sheet. By using this
symbol, it states that the device has been marketed after August 13th 2005 and implies
that you must separate all of its components when possible and dispose of them in
accordance with local waste disposal legislations.
Because of the substances present in the equipment, improper use or disposal of the refuse can cause
damage to human health and to the environment.
With reference to WEEE, it is compulsory not dispose of the equipment with normal urban refuse,
arrangements should be instigated for separate collection and disposal.
Contact your local waste collection body for more detailed recycling information.
In case of illicit disposal, sanctions will be levied on transgressors.

Important user information
7
RoHS
This device, including all it components, subassemblies and the consumable materials that are an
integral part of the product, has been manufactured in compliance with the European directive
2002/95/EC known as the RoHS directive (Restrictions on the use of certain Hazardous Substances).
This directive targets the reduction of certain hazardous substances previously used in electrical and
electronic equipment (EEE).
Technical assistance
For any technical questions, or if you cannot isolate a problem with your device, or for any enquiry
about repair and returns policies, feel free to contact your local Eurotech Technical Support Team.
See Eurotech Worldwide Presence (the back cover) for full contact details.
Transportation
When transporting any module or system, for any reason, it should be packed using anti-static material
and placed in a sturdy box with enough packing material to adequately cushion it.
Any product returned to Eurotech that is damaged due to inappropriate packaging will not be covered by the
warranty!
Device labelling
The TITAN board name label is affixed to the PC/104 connector J13. A second label containing the
TITAN serial number is affixed to the PC/104 connector J14. This label contains the Eurotech part
number, the version and issue of this product and the serial number which is unique to each individual
TITAN.

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Introduction
The TITAN is an ultra low power PC/104 compatible single board computer based on the Marvell
520MHz PXA270 XScale processor. The PXA270 is an implementation of the Intel XScale micro
architecture combined with a comprehensive set of integrated peripherals, including:
•Flat panel graphics controller.
•Interrupt controller.
•Real time clock.
•Various serial interfaces.
The TITAN board offers a wide range of features making it ideal for power sensitive embedded
communications and multimedia applications.
The TITAN is available with a choice of CPU frequencies and memory configuration options, as shown
below:
Variant Memory configuration Details
TITAN TITAN-FRx-Mx-Fx-R6 PXA270, FRx=520/416MHz
microprocessor, Mx=64/128MB SDRAM,
Fx=32/64MB Flash,
Commercial temperature range.
TITAN -FRx-Mx-Fx-I-R6 PXA270, FRx=520/416MHz
microprocessor, Mx=64/128MB SDRAM,
Fx=32/64MB Flash,
Industrial temperature range.
The TITAN board is RoHS compliant.
For alternative memory configurations, please contact Eurotech (see Eurotech Worldwide Presence for
details). Eurotech can provide custom configurations (subject to a minimum order quantity) for the
TITAN. Please contact our Sales team to discuss your requirements.
This manual details the TITAN V2I1 versions. For details of the changes between TITAN V1I1 and
V2I1 please refer to Appendix D – TITAN V1I1 to V2I1 design changes, page 83.

Introduction
9
TITAN ‘at a glance’
SDIO socket
10/100 Base-T Ethernet Audio - In/Out/MIC/AMP
LVDS TFT/STN panel
Jumper
Power
(inc battery input)
Ethernet LEDs
JTAG
Intel PXA270
XScale 520MHz
processor
AMD Mirrorbit
Flash
8/16-
bit PC/104
interface
USB hosts / client
Qu
ick capture camera
Digital I/O
Touchscreen
Five serial ports
Battery
Jumpers
Backlight power

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TITAN features
Microprocessor
•520MHz (commercial operating temperature) / 416MHz (industrial operating temperature)
PXA270 processor.
Cache
•32K data cache, 32K instruction cache, 2K mini data cache.
System memory
•Fixed on-board memory: 64/128MB SDRAM (32-bit wide SDRAM data bus).
Silicon disk
•Fixed on-board memory: 32 or 64MB Flash.
SRAM
•256KB of SRAM battery backed on-board.
Serial ports
•Five UART fast serial ports, 16550 compatible (921.6Kbaud):
- One RS422/485 interface (software selectable).
- Four RS232 interfaces.
•Two channels with 128 byte Tx/Rx FIFO.
•40-pin boxed header.
USB support
•Two USB 1.1 host controller ports supporting 12Mbps and 1.5Mbps speeds.
•One USB 1.1 client controller port supporting 12Mbps and 1.5Mbps speeds (software
selectable on Host 2).
•Short circuit protection with 500mA current limit protection.
•10-pin header.
Network support
•One IEEE 802.3u 10/100 Base-T Ethernet controller.
•One 10/100BaseTX NIC port on 8-pin header.
•Factory build option for external Power-over-Ethernet (PoE).
Expansion interfaces
•SDIO socket to support MMC/SD/SDIO cards.
•PC/104 expansion bus - 8/16-bit ISA bus compatible interface.
Date/time support
•Real time clock – battery backed on-board (external to PXA270).
•± 1 minute/month accuracy.

Introduction
11
Video
•18-bit flat panel interface for STN and TFT displays on 40-pin boxed connector.
•Up to 800x600 resolution.
•8/16bpp.
•Backlight control.
•Optional LVDS interface.
•LCD voltage (3.3V / 5V) selection jumper.
•LVDS encoding mode selector jumper (for signalling decoding LVDS display receiver).
Audio and touchscreen
•Wolfson WM9712L AC’97 compatible CODEC.
•Line in, line out, microphone in, stereo amp out on 12-pin boxed header.
•Touchscreen support: 4/5-wire analogue resistive on 5-pin boxed header.
Quick Capture camera interface
•Quick Capture technology.
•20-pin boxed header connector to a camera image sensor.
I2C bus
•Multi-master serial bus, header connection.
Configuration PROM
•I2C PROM for storing configuration data.
Watchdog timer
•External to PXA270, generates reset on timeout. Timeout range 1ms-60s.
User configuration
•Three user configurable jumpers on 8-pin header.
General I/O
•Sixteen user configurable general purpose I/O on 20-pin boxed header.
•5V tolerant inputs.
•3.3V outputs, pulled up to 5V.
•PWM outputs for LED intensity control
Temperature sensor
•I2C temperature sensor.
Battery backup
•On-board battery holder containing a lithium-ion non-rechargeable CR2032, 3V, 220mAh
battery.
•Battery disconnect jumper.

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Test support
•JTAG interface (10-pin 1mm pitch header).
•Download data to FLASH memory.
•Debug and connection to In-Circuit Emulator (ICE).
Power requirements
•Typically 1.5W from a single 5V supply.
•Power management features allow current requirements to be as low as 20mA (100mW) in
sleep mode and 2mA (10mW) in deep sleep mode.
Mechanical
•PC/104 compatible footprint 3.8" x 3.6" (96mm x 91mm) www.pc104.org.
Environmental
•Operating temperature:
- Commercial: 20°C (-4°F) to +70°C (+158°F) for speed variants up to 520MHz.
- Industrial: -40°C (-40°F) to +85°C (+185°F) for speed variants up to 416MHz.
•RoHS Directive Compliant (2002/95/EC).

Introduction
13
TITAN support products
The following products support the TITAN:
•ZEUS-FPIF (Flat Panel Interface)
The ZEUS-FPIF is a simple board that enables easy connection between the TITAN and a
variety of LCD flat panel displays.
•See Appendix E - ZEUS-FPIF details, page 86, for further details.
•ZEUS-FPIF-CRT, a board that allows the TITAN to drive a CRT monitor or an analogue LCD
flat panel. Sync on green and composite sync monitors are not supported.
•See Appendix F - ZEUS-FPIF-CRT details, page 91, for further details.
•ETHER-BREAKOUT
The ETHER-BREAKOUT is a simple board that converts the TITAN Ethernet 8-pin header and
Ethernet LEDs 6-pin header to a standard RJ45 connector with LEDs.
•See Appendix G - Ethernet Breakout details, page 94, for further details.
Contact Eurotech (see Eurotech Worldwide Presence) for further information about any of these
products.

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Getting started
Depending on the Development Kit purchased, a Quickstart Manual is provided for Windows CE or
embedded Linux to enable users to set up and start using the board. Please read the relevant manual
and follow the steps for setting up the board. Once you have completed this task and have a working
TITAN system, you can start adding further peripherals, enabling development to begin.
Using the TITAN
This section provides a guide to setting up and using of some of the features of the TITAN. For more
detailed information on any aspect of the board see Detailed hardware description, page 16.
Using the SDIO socket
The TITAN is fitted with a SDIO socket mounted on the top side of the board. The socket is connected
to a PXA270 MMC/SD/SDIO controller interface. The TITAN supports hot swap changeover of the
cards and notification of card insertion. See the sections SDIO, page 29 and J7 – SDIO socket, page
69, for further details.
Using the serial interfaces (RS232/422/485)
The five serial port interfaces on the TITAN are fully 16550 compatible. Connection to the serial ports
is made via a 40-way boxed header. The pin assignment of this header has been arranged to enable
9-way IDC D-Sub plugs to be connected directly to the cable. See the sections Serial COMs ports,
page 46 and J1 – COMS ports, page 65, for further details.
Using the audio features
There are four audio interfaces supported on the TITAN: amp out, line out, line in and microphone. The
line in, line out and amp interfaces support stereo signals and the microphone provides a mono input.
The amplified output is suitable for driving an 8Ωload with a maximum power output of 250mW per
channel.
Connections are routed to J6 - see the sections Audio, page 42 and J7 – Audio connector, page 68, for
further details.
Using the USB host
The standard USB connector is a 4-way socket, which provides power and data signals to the USB
peripheral. The 10-way header J10 has been designed to be compatible with PC expansion brackets
that support two USB sockets. See the sections USB, page 44 and J10 – USB connector, page 71, for
further details.
Using the USB client
The TITAN USB host port 2 can be configured under software to be a client and connected to a PC via
a USB cable. The USB cable should be plugged into the 10-way header J10. See the sections USB,
page 44 and J10 – USB connector, page 71, for further details.

Getting started
15
Using the Ethernet interface
The SMSC LAN9221i 10/100BaseTX Ethernet controller is configured by the RedBoot boot loader for
embedded Linux and by Windows CE once it has booted. Connection is made via connector J11. A
second connector J12 provides link and speed status outputs for control LEDs. See the sections
Ethernet, page 45; J11 – 10/100BaseTX Ethernet connector, page 71; and J12 – Ethernet status LEDs
connector, page 71, for further details.
Using the PC/104 expansion bus
PC/104 modules can be used with the TITAN to add extra functionality to the system. This interface
supports 8/16-bit ISA bus style peripherals.
Eurotech has a wide range of PC/104 modules that are compatible with the TITAN. These include
modules for digital I/O, analogue I/O, motion control, video capture, CAN bus, serial interfaces, etc.
Please contact the Eurotech sales team if a particular interface you require does not appear to be
available as these modules are in continuous development. Contact details are provided in Eurotech
Worldwide Presence.
To use a PC/104 board with the TITAN, plug it into J13 for 8-bit cards and J13/J14 for 8/16-bit cards.
See the sections PC/104 interface, page 30 and J14 & J15 – PC/104 connectors, page 72, for further
details.
The ISA interface on the TITAN does not support DMA, shared interrupts and some access modes.
See the section PC/104 interrupts, page 31, for details about PC/104 interrupt use.
The TITAN provides +5V to a PC/104 add-on board via the J13 and J14 connectors. If a PC/104 add-
on board requires a +12V supply, then +12V must be supplied to the TITAN power connector J15 pin
4. If –12V or –5V are required, these must be supplied directly to the PC/104 add-on board.
The TITAN is available with non-stack through connectors by special order. Contact Eurotech for more
details (see Eurotech Worldwide Presence).

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Detailed hardware description
The following section provides a detailed description of the functions provided by the TITAN. This
information may be required during development after you have started adding extra peripherals or are
starting to use some of the embedded features.
TITAN block diagram
The diagram below illustrates the functional organization of the TITAN PC/104 SBC:
256 KB
SRAM
DUART
Comms
Header
J1
COM 1
RS232
Transceiver
COM 2
COM 4
COM 3 RS232
Transceiver
CPLD
Ethernet
Controller
Ethernet
Headers
J11/J12
Serial
EEPROM
2xUSB
Header
J10
JTAG
Audio
Header
J6
AC'97
Codec
250mW
Audio Amp
LCD
Conn.
J4
PC/104
J13/J14
JTAG
Header
J9
PXA270
416MHz industrial /
520MHz commercial
MEMORY CONTROLLER BUS
PERIPHERALS / GPIO
I/O
Expander
LCD
USB B 1.1 Host
USB A 1.1 Host
GPIO
Header
J3
PSUs
CPU_CORE (+0.85V - +1.55V)
TSC
Header
J5
Power
Conn.
J15
Reset /
Watchdog
Circuit
RESET#
COM 5
RS232
Transceiver
FFUART
BTUART
STUART
TITAN
Power Management I2C
USB A 1.1 Client
SD
Socket
J7
SDIO
LVDS
Transmitter
LVDS
Conn.
J8
Camera
Header
J2
Quick Capture Camera
AC97
I2C
I2C
LINE IN R+L
LINE OUT R+L
MIC IN
AMP R+L
LVDS
Config
PROM
Temp
Sensor
I2C
I2C
I2C
IN[0:7] /
OUT[0:7]
ISA
Touch Screen
JP4
JP1
JP3
VCC_SRAM (+1.1V)
VCC_PLL (+1.3V)
VCC_BATT (+3V - +3.3V)
+3V3 (+3.3V)
+3V3_RAM (+3V - +3.3V)
BLKSAFE (+5V)
+2V8_CIF (+2.8V)
USBVCC1 (+5V)
USBVCC2 (+5V)
POSBIAS (+22V)
NEGBIAS (-22V)
Transformer
+3V3
+3V3_RAM
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3
+3V3 +3V3
+5V +12V
+3V3
+3V3
+3V3
+2V5_TRANS
+3V3
+3V3
+3V3 VCC_PLL VCC_CORE VCC_BATT VCC_SRAM
+5V
+3V3
+3V3
+3V3 +5V
+3V3 +2V8_CIF
+3V3
+3V3
USBVCC1 USBVCC2
+3V3
LCDSAFE
POSBIAS
NEGBIAS
Clock
Generation 25MHz
8MHz (PC/104)
14.318MHz (PC/104)
14.7456MHz (DUART)
24.576MHz (AC’97 Codec)
25MHz (Ethernet Controler)
+3V3
RTC
I2C
32.768kHz (PXA270)
+3V3
32.768kHz
JP5
Manual
Reset
Jumper
Battery
Disconnect
Jumper
13MHz
+5V
VBAT_E
RESET_SW#
VBAT_I
VBAT
LVDS Mode
Select Jumper
User Config
Jumpers
JP2
LCD Logic
Supply Jumper
+3V3 +5V
VCC_BATT
Transceivers
RS422/485
Transceiver
32/64 MB
FLASH
64 MB /
128 MB
SDRAM
VBAT
JP6
Backlight
Header
J16
BLKSAFE
Backlight control

Detailed hardware description
17
TITAN address map
PXA270 chip select Physical address Bus width Description
CS0# 0x00000000 – 0x03FFFFFE 16-bit FLASH memory / Silicon disk
CS1# 0x04000000 – 0x040000FE 16-bit Ethernet controller CSRs and FIFOs
CS1# 0x04000100 – 0x04000106 16-bit Ethernet controller TX and RX FIFOs
- 0x08000000 – 0x0FFFFFFF - Reserved
CS4# 0x10000000 – 0x1000000E 16-bit COM4
-
0x10000010 – 0x107FFFFF
-
Reserved
CS4#
0x10800000 – 0x1080000E
16-bit
COM5
- 0x10800010 – 0x10FFFFFF - Reserved
CS4#
0x11000000 – 0x11000001
16-bit
BV_REG (Board version / issue)
-
0x11000002 – 0x117FFFFF
-
Reserved
CS4#
0x11800000 – 0x11800001
16-bit
I2_REG (PC104 IRQ status)
-
0x11800002 – 0x11FFFFFF
-
Reserved
CS4#
0x12000000 – 0x12000001
16-bit
CV_REG (CPLD version / issue)
-
0x12000002 – 0x127FFFFF
-
Reserved
CS4#
0x12800000 – 0x12800001
16-bit
I1_REG (PC104 IRQ status)
-
0x12800002 – 0x12FFFFFF
-
Reserved
CS4#
0x13000000 – 0x13000001
16-bit
C_REG (PC104 reset)
-
0x13000002 – 0x13FFFFFF
-
Reserved
CS5#
0x14000000 – 0x17FFFFFE
16-bit
SRAM
-
0x18000000 – 0x1FFFFFFF
-
Reserved
NA
0x30000000 – 0x300003FF
8/16-bit
PC/104 I/O space
-
0x30000400 – 0x3BFFFFFF
-
Reserved
NA
0x3C000000 – 0x3C1FFFFF
8/16-bit
PC/104 memory space
-
0x3C200000 – 0x3FFFFFFF
-
Reserved
NA
0x40000000 – 0x43FFFFFF
32-bit
PXA270 peripherals1
NA
0x44000000 – 0x47FFFFFC
32-bit
LCD control registers1
NA
0x48000000 – 0x4BFFFFFC
32-bit
Memory controller registers1
NA
0x4C000000 – 0x4FFFFFFC
32-bit
USB host registers1
NA
0x50000000 – 0x53FFFFFC
32-bit
Capture Interface registers1
-
0x54000000 – 0x57FFFFFC
-
Reserved
NA
0x58000000 – 0x5BFFFFFC
32-bit
Internal memory control1
NA
0x5C000000 – 0x5C00FFFC
32-bit
Internal SRAM bank 0
NA
0x5C010000 – 0x5C01FFFC
32-bit
Internal SRAM bank 1
NA
0x5C020000 – 0x5C02FFFC
32-bit
Internal SRAM bank 2
NA
0x5C030000 – 0x5C03FFFC
32-bit
Internal SRAM bank 3
-
0x5C040000 – 0X7FFFFFFF
-
Reserved
SDCS0#
0x80000000 – 0x8FFFFFFF
32-bit
SDRAM
-
0x90000000 – 0xFFFFFFFF
-
Reserved
1Details of the internal registers are in the Intel Developer’s Manual on the Development Kit CD.

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Translations made by the MMU
For details of translations made by the MMU by Redboot for embedded Linux, please refer to the
TITAN Embedded Linux Quickstart Manual.
For details of translations made by the MMU for Windows CE, please check the Windows CE
documentation for information about memory mapping. One source of this information is on the MSDN
web site (www.msdn.microsoft.com) under Windows CE Memory Architecture.
PXA270 processor
The TITAN board is based on a PXA270 processor,
www.marvell.com/processors/applications/pxa_family/assets/pxa_27x_pb.pdf
The PXA270 processor is an integrated system-on-a-chip microprocessor for high-performance, low-
power portable handheld and handset devices. It incorporates on-the-fly voltage and frequency scaling
and sophisticated power management.
The PXA270 processor complies with the ARM* Architecture V5TE instruction set (excluding floating
point instructions) and follows the ARM* programmer’s model. The PXA270 processor also supports
Intel®Wireless MMX™ integer instructions in applications such as those that accelerate audio and
video processing.
The features of the PXA270 processor include:
•Intel®XScale™ core.
•Power management.
•Internal memory - 256KB of on-chip RAM.
•Interrupt controller.
•Operating system timers.
•Pulse-width modulation unit (PWM).
•Real time clock (RTC).
•General purpose I/O (GPIO).
•Memory controller.
•DMA controller.
•Serial ports:
- 3x UART.
- Fast infrared port.
- I2C bus port.
- AC97 Codec interface.
- I2S Codec interface.
- USB host controller (2 ports).
- USB client controller.
- 3x synchronous serial ports (SSP).
•LCD panel controller.
•Multimedia card, SD memory card and SDIO card controller.
•Memory stick host controller.
•Mobile scalable link (MSL) interface.
•Keypad interface.
•Universal subscriber identity module (USIM) interface.
•Quick Capture camera interface.
•JTAG interface.
•356-pin VF-BGA packaging.

Detailed hardware description
19
The design supports 520MHz and416MHz speed variants of the PXA270 processor. The standard
variant of the TITAN board includes the 520MHz version of the PXA270. The maximum speed
available for extended temperature version of the TITAN is 416MHz.
A 13MHz external crystal is used to run the PXA270 processor. All other clocks are generated
internally in the processor.
The PXA270 processor family provides multimedia performance, low power capabilities and rich
peripheral integration. Designed for wireless clients, it incorporates the latest advances in mobile
technology over its predecessor, the PXA255 processor. The PXA270 processor features scalability by
operating from 104MHz up to 520MHz, providing enough performance for the most demanding control
and monitoring applications.
PXA270 is the first Intel®Personal Internet Client Architecture (PCA) processor to include Intel®
Wireless MMX™ technology, enabling high performance, low power multimedia acceleration with a
general purpose instruction set. Intel®Quick Capture technology provides a flexible and powerful
camera interface for capturing digital images and video. Power consumption is also a critical
component. Wireless Intel SpeedStep®technology provides the new capabilities in low power
operation.
The processor requires a number of power supply rails. All voltage levels are generated on-board from
the +5V power input The TITAN uses a specialised power management IC to support Intel
SpeedStep®technology.
The PXA270 processor is a low power device and does not require a heat sink for temperatures up to
70°C (85°C for the industrial variant).

TITAN - user manual
20
ETH_TITAN_V2_USM
PXA270 GPIO pin assignments
The table below summarizes the use of the 118 PXA270 GPIO pins, their direction, alternate function
and active level.
For embedded Linux the GPIO pins are setup by Redboot. For Windows CE, they are setup by the OS
and not by the boot loader.
For details of pin states during reset see the Pin Usage table in the PXA27x Processor Family
Electrical, Mechanical and Thermal Specification.
Key:
AF Alternate function.
Dir Pin direction.
Active Function active level or edge.
Sleep Pin state during sleep mode:
- Hi-Z states are set to ‘1’ during sleep.
- Last states are whatever the last state was before going to sleep.
GPIO
No AF
Signal name
Dir
Active
Function
Sleep
Wake-up
source
See section…
0 0
AC97_IRQ
Input
AC97 interrupt
Input

Audio
1 0
DS_WAKEUP
Input
Deep sleep wakeup
Input

Power and power
management
2 0
SYS_EN
Output
High
Enable 3.3V supplies
1
-
3 0
PWR_SCL
Output
NA
Control PXA270 supplies
1
-
4 0
PWR_SDA
Bidir
NA
Input
-
5 0
PWR_CAP0
Power
-
To achieve low power in
during sleep
-
-
6 0
PWR_CAP1
Power
-
-
-
7 0
PWR_CAP2
Power
-
-
-
8 0
PWR_CAP3
Power
-
-
-
9 0
COM1OR4_
WAKEUP
Input
COM1 to COM4 activity
Input

Serial COMs ports
10 0
COM4_IRQ
Input
COM 4 interrupt
Input
11 0
COM5_IRQ
Input
COM 5
interrupt
Input

12 0
OVERTEMP
Input
Temperature sensor over
temperature IRQ
Input

I
²C
13 0
USER_LINKA
Input
User configurable
Input

External interrupts
14 0
ETH_IRQ#
Input
Ethernet interrupt
Input

Ethernet
15 2
ETH_CS1#
Output
Low
Chip
select 1
1
-
16 2
BRT_CTRL
Output
See
inverter
datasheet
Backlight on/off or variable
brightness if PWM
0
-
Flat panel display
support
17 0
PC104_IRQ
Input
‘OR’ of PC/104 interrupts
Input

PC/104 interface
18 0
CLK_SHDN#
Output
Low
Shutdown clocks
0
-
-
19 0
BKLEN
Output
High
LCD backlight enable
0 = off; 1 = on
0
-
Flat panel display
support