Eurotech Titan User manual

Rev. 4.0 - April 2009 - ETH_TITAN_USM
DIGITAL TECHNOLOGIES FOR A BETTER WORLD
www.eurotech.com
USER MANUAL
TITAN
PXA270 RISC based PC/104
Single Board Compute
r

DISCLAIMER
The information in this document is subject to change without notice and should not be construed as a commitment
by any Eurotech company. While reasonable precautions have been taken, Eurotech assumes no responsibility for
any error that may appear in this document.
WARRANTY
This product is supplied with a 3 year limited warranty. The product warranty covers failure of any Eurotech
manufactured product caused by manufacturing defects. The warranty on all third party manufactured products
utilised by Eurotech is limited to 1 year. Eurotech will make all reasonable effort to repair the product or replace it
with an identical variant. Eurotech reserves the right to replace the returned product with an alternative variant or
an equivalent fit, form and functional product. Delivery charges will apply to all returned products. Please check
www.eurotech.com for information about Product Return Forms.
TRADEMARKS
ARM and StrongARM are registered trademarks of ARM Ltd.
Intel and XScale are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United
States and other countries.
Windows CE is a trademark of the Microsoft Corporation.
CompactFlash is the registered trademark of SanDisk Corp.
Linux is a registered trademark of Linus Torvalds.
RedBoot and Red HatTM is a registered trademark of Red Hat Inc.
Bluetooth is a registered trademark of Bluetooth SIG, Inc.
All other trademarks recognised.
REVISION HISTORY
Issue no. PCB Date Comments
AV0 Issue 2 30th August 2007 Draft release of manual for TITAN and TITAN-Lite.
B V0 Issue 2 1st October 2007 Moved ZEUS-FPIF and Ethernet Breakout details to Appendices
and added details of ZEUS-FPIF-CRT; Eurotech rebranding.
C V1 Issue 1 16th April 2008 Release for TITAN V1I1.
D V1 Issue 1 2nd April 2009 Minor updates and new branding.
© 2009 Eurotech. All rights reserved.
For contact details, see page 101.

Contents
Issue D 3
Contents
Introduction...............................................................................................................................5
TITAN ‘at a glance’ .......................................................................................................6
TITAN features .............................................................................................................7
TITAN support products..............................................................................................10
Product handling and environmental compliance.......................................................11
Conventions................................................................................................................12
Getting started ........................................................................................................................13
Using the TITAN .........................................................................................................13
Detailed hardware description ................................................................................................15
TITAN block diagram ..................................................................................................15
TITAN address map....................................................................................................16
Translations made by the MMU..................................................................................17
PXA270 processor......................................................................................................17
PXA270 GPIO pin assignments .................................................................................19
Interrupt assignments .................................................................................................24
Real time clock ...........................................................................................................25
Watchdog timer...........................................................................................................26
Memory.......................................................................................................................27
SDIO...........................................................................................................................28
PC/104 interface.........................................................................................................29
Flat panel display support...........................................................................................36
Audio ..........................................................................................................................42
Touchscreen controller ...............................................................................................42
USB ............................................................................................................................43
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...................................................................................57
Peripheral devices power management .....................................................................59
Connectors, LEDs and jumpers..............................................................................................64
Connectors .................................................................................................................65
Status LEDs ................................................................................................................78
Jumpers......................................................................................................................78
Appendix A - Board version / issue .........................................................................................82
Appendix B - Specification......................................................................................................84
Appendix C - Mechanical diagram..........................................................................................86
Appendix D - Reference information ......................................................................................87
Appendix E - ZEUS-FPIF details ............................................................................................88
Appendix F - ZEUS-FPIF-CRT details....................................................................................93

TITAN user manual
Appendix G - Ethernet Breakout details................................................................................. 96
Appendix H - Acronyms and abbreviations ............................................................................ 98
Appendix I - RoHS-6 Compliance - Materials Declaration Form.......................................... 100
Eurotech Group Worldwide Presence.................................................................................. 101

Introduction
Issue D 5
Introduction
The TITAN is an ultra low power PC/104 compatible single board computer based on the
Intel 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 board is available in two standard variants:
•TITAN.
•TITAN-Lite (TITANL).
The TITAN is available with a choice CPU frequency and memory configurations 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.
TITAN-Lite TITANL-312-M64-F16-R6 PXA270 312MHz CPU, 64MB SDRAM,
16MB Flash No SRAM, PC/104, Audio or
COM 4 & 5, Commercial temperature
range.
TITANL-312-M64-F16-I-R6 PXA270 312MHz CPU, 64MB SDRAM,
16MB Flash No SRAM, PC/104, Audio or
COM 4 & 5, Industrial temperature range.
The TITAN board is RoHS compliant.
For alternative memory configurations, please contact Eurotech (see Eurotech Group
Worldwide Presence, page 101, for details). Eurotech can provide custom configurations
(subject to a minimum order quantity) for the TITAN / TITAN-Lite. Please contact our
Sales team to discuss your requirements.

TITAN user manual
Issue D
6
TITAN ‘at a glance’
SDIO socket
10/100 Base-T Ethernet Audio - In/Out/MIC/AMP
LVDS [optional] TFT/STN panel
Quick Capture
camera
Digital I/O
Touchscreen
Five serial ports
Battery
Jumpers
Jumpers
Powe
r
(inc battery input)
Ethernet LEDs
JTAG
Intel PXA270
XScale 520MHz
processo
r
AMD Mirrorbit
Flash
8/16-bit PC/104
interface
USB hosts / client

Introduction
Issue D 7
TITAN features
Microprocessor
•PXA270 312MHz (TITAN-Lite only) 416/520MHz XScale processor (520MHz as
standard option).
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: 16MB Flash (TITAN-Lite only) or 32/64MB 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.
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TITAN user manual
Issue D
8
Date/time support
•Real time clock – battery backed on-board (external to PXA270).
•± 1 minute/month accuracy.
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
•Intel®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
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Introduction
Issue D 9
Temperature sensor
•I2C temperature sensor.
Battery backup
•On-board battery holder containing a lithium-ion non-rechargeable CR2032, 3V,
220mAh battery.
•Battery disconnect jumper.
Test support
•JTAG interface (10-pin 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).
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TITAN user manual
Issue D
10
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 88, 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 93, 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 96, for further details.
Contact Eurotech (see Eurotech Group Worldwide Presence, page 101) for further
information about any of these products.

Introduction
Issue D 11
Product handling and environmental compliance
Anti-static handling
This board contains CMOS devices that could be damaged in the event of static
electricity being discharged through them. At all times, please observe anti-static
precautions when handling the board. This includes storing the board in appropriate anti-
static packaging and wearing a wrist strap when handling the board.
Packaging
Please ensure that, should a board need to be returned to Eurotech, it is adequately
packed (preferably in the original packing material).
Electromagnetic compatibility (EMC)
The TITAN is classified as a component with regard to the European Community EMC
regulations and it is the user’s responsibility to ensure that systems using the board are
compliant with the appropriate EMC standards.
RoHS compliance
The European RoHS Directive (Restriction on the Use of Certain Hazardous Substances
– Directive 2002/95/EC) limits the amount of six specific substances within the
composition of the product. The ZEUS and associated accessory products are available
as RoHS-6 compliant options and are identified by an -R6 suffix in the product order
code. A full RoHS Compliance Materials Declaration Form is included in Appendix I -
RoHS-6 Compliance - Materials Declaration Form. Further information about RoHS
compliance is available on the Eurotech web site at www.eurotech-
ltd.co.uk/RoHS_and_WEEE.

TITAN user manual
Issue D
12
Conventions
The following symbols are used in this guide:
Symbol Explanation
Note - information that requires your attention.
Caution – proceeding with a course of action may damage
your equipment or result in loss of data.
Jumper is fitted.
Jumper provided, but not fitted.
Jumper is not fitted.
Tables
With tables such as that shown below, the white cells show information relevant to the
subject being discussed. Grey cells are not relevant in the current context.
Byte lane Most significant byte Least significant byte
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Field - - - - - - - - - - - - - RETRI
G
AUTO
_
CLR R_DIS
Reset X X X X X X X X 0 0 0 0 0 0 0 0

Getting started
Issue D 13
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 15.
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 28, and J7 – SDIO socket, page 70, 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 66, for further
details.
A suitable cable for COM1 is provided as part of the Development Kit. The D-Sub
connector on this cable is compatible with the standard 9-way connector on a desktop
computer.
COM4 (RS232) and COM5 (RS422/485) are not available on the standard
TITAN-Lite configuration. Eurotech can provide custom configurations (subject to
a minimum order quantity) for the TITAN-Lite populated with this feature. Please
contact our Sales team to discuss your requirements (see Eurotech Group
Worldwide Presence, page 101).
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 41, and J7 – Audio
connector, page 69, for further details.
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TITAN user manual
Issue D
14
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 43,
and J10 – USB connector, page 72, 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 This feature is standard for the TITAN-Lite. The USB
cable should be plugged into the 10-way header J10. See the sections USB, page 43,
and J10 – USB connector, page 72, for further details.
Using the Ethernet interface
The Davicom DM9000A 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 72; and J12 – Ethernet status LEDs connector, page 73, 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 Group Worldwide Presence, page
101.
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 29,and J14 & J15 – PC/104
connectors, page 74, 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 30, 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 Group Worldwide Presence, page 101).
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Detailed hardware description
Issue D 15
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 and TITAN-Lite
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
312MHz /
416MHz / 520MHz
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 & TITAN-Lite
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
= TITAN-LITE only
= Not avaliable for standard TITAN-LITE
JP4
JP1
JP3
VCC_SRAM (+1.1V)
VCC_PLL (+1.3V)
VCC_BATT (+3V - +3.3V)
+3V3 (+3.3V)
+3V3_RAM (+3V - +3.3V)
LCDSAFE (+3.3V / 5V)
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 +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
POSBIAS
NEGBIAS
BLKSAFE
LCDSAFE
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
OPTIONAL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL
TL TL
TL
RS422/485
Transceiver
32/64 MB
FLASH
16 MB /
64 MB /
128 MB
SDRAM
TL
TL
TL
TL
TL
TL
TL
TL
VBAT
TL
TL
JP6

TITAN user manual
Issue D
16
TITAN address map
PXA270 chip select Physical address Bus width Description
CS0# 0x00000000 – 0x03FFFFFE 16-bit FLASH memory / Silicon disk
CS1# 0x04000000 – 0x07FFFFFE 16-bit Ethernet controller
- 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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Detailed hardware description
Issue D 17
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.intel.com/design/pca/prodbref/253820.htm.
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.

TITAN user manual
Issue D
18
•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.
The design supports 520MHz, 416MHz and 312MHz speed variants of the PXA270
processor. The standard variant of the TITAN board includes the 520MHz version of the
PXA270. The TITAN-LITE board is fitted with the a 312MHz version of the PXA270. The
maximum speed available for extended temperature versions 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
Intel 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).

Detailed hardware description
Issue D 19
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 3Audio
1 0 DS_WAKEUP
Input Deep sleep wakeup Input
3
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 - - -
6 0 PWR_CAP1 Power - - -
7 0 PWR_CAP2 Power - - -
8 0
PWR_CAP3 Power -
To achieve low power in
during sleep
- -
Power and power
management
9 0
COM1OR4_
WAKEUP Input COM1 to COM4 activity Input 3
10 0 COM4_IRQ Input COM 4 interrupt Input
11 0 COM5_IRQ Input COM 5 interrupt Input 3
Serial COMs ports
12 0 OVERTEMP Input Temperature sensor over
temperature IRQ Input 3I²C
13 0 USER_LINKA Input User configurable Input 3External interrupts
14 0 ETH_IRQ# Input Ethernet interrupt Input 3
15 2 ETH_CS1# Output Low Chip select 1 1 -
Ethernet
TL
TL
TL

TITAN user manual
Issue D
20
GPIO
No AF Signal name Dir Active Function Sleep
Wake-up
source See section…
16 2 PWM0 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 3PC/104 interface
18 0 CLK_SHDN# Output Low Shutdown clocks 0 -
-
19 0 BKLEN Output High LCD backlight enable 0 - Flat panel display
support
20 0 RS232_SHDN# Output Low Shutdown COM 1, 2, 3, & 4 0 -
Serial COMs ports
21 0 LVDS_EN Output High
0 = LVDS power down
[default]
1= LVDS enable
0 -
LVDS interface
22 0 USB_PWE2 Output High USB channel 2 power
enable 0 -
USB
23 1 CIF_MCLK Output NA Camera interface master
clock 0 -
24 1 CIF_FV Input NA Camera interface frame
sync - vertical Input -
25 1 CIF_LV Input NA Camera interface line sync -
horizontal Input -
26 2 CIF_PCLK Input NA Camera interface pixel clock Input -
Quick Capture
camera interface
27 0 LVDS_FES# Output Low
0 = LVDS falling edge
strobe
1= LVDS rising edge strobe
[default]
1 -
LVDS interface
28 1 AC97_BITCLK Input AC97 BITCLK Input -
29 1 AC97_DIN Input NA AC97 SDATA_IN0 Input -
30 2 AC97_DOUT Output NA AC97 SDATA_OUT 0 -
31 2 AC97_SYNC Output
AC97 SYNC 0 -
Audio
32 2 MMCLK Output NA SDIO clock 0 - -
33 2 SRAM_CS5# Output Low Chip select 5 1 - Memory
34 1 RXD1 Input NA COM1 receive data Input - Serial COMs ports
35 0 USER_LINKB Input User configurable Input 3External interrupts
TL
TL
TL
TL
TL
TL
TL
TL