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北京时间2007年10月27日，国外一家名为compulab的网站推出了一项全新、有趣同时又是众望所归的业务——智能手机DIY（Do It Yourself）。这项服务允许用户像购买DELL电脑那样定制自己手机的硬件配置，需要哪种功能就可以添加相关的模块，甚至连操作系统也有完全开放源代码的Linux以及美国“微软”的Windows CE两种可选。笔者之所以形容这项业务是广大消费者们的“众望所归”，最主要的原因就在于手机究竟拥有什么样的功能、采用什么样的配置，终于可以由用户自己来决定，而无需再向那些花里胡哨、平日里根本就使用不到的附加功能花冤枉钱了。

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图为Compulab公司最新推出的产品代号为EM-X270的手机DIY解决方案

Compulab公司本次为消费者所推出的这套解决方案代号为EM-X270，最低起始价格为122美金，也就是人民币900元左右。用户付出这不足千元的代价却可以得到一个能插SIM卡与MMC/SD存储卡，镶嵌有Wi-Fi（IEEE 802.11b）、蓝牙、GPS模块以及一颗200万像素摄头，同时还拥有128MB可存储内存以及512MB可存储空间的绿色PCB板，性价比可谓相当高。而用户接下来要做的事情就是，选择一个800×600分辨率以下的STN或TFT触摸屏幕，考虑究竟是要312MHz还是520MHz的Intel XScale PXA270中央处理器，挑选一个自己喜欢，同时又能够装入一张97×66毫米大小手机主板的外壳，不仅在一定程度上实现了DIY的精神，同时又可以大幅度地节约自己的开支。

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图为Compulab公司最新推出的产品代号为EM-X270的手机DIY解决方案

图片点击可在新窗口打开查看

图为Compulab公司最新推出的产品代号为EM-X270的手机DIY解决方案

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EM-X270 Prices

Last updated on 06-Aug-2007

Minimal configuration P/N: EM-X270-C312
1K-unit price	$ 122
10K-unit price	$ 110

Optional Extensions
(the first line of each option specifies its content in minimal configuration)

Feature	Options	P/N code	Add ($)
CPU speed	312 MHz 520 MHz	C312 C520	- 12
WiFi Interface	No Yes	- W	- 26
GPS receiver	No Yes	- H	- 59
GPRS & cell phone	No Yes	- K	- 94
Temperature range	Commercial Extended Industrial	- TE TI	- 20 100
Software Preloading	No Yes	- X	- $1/10MB

Off-board Devices

Part Name	Description	Price $
LCD35	3.5" 480 x 640 LCD panel	77
KEYPAD	8-keys pad	6
BAT10	Lithium polymer battery, 97 x 55 mm, 10 W/h	10

> For features' descriptions, see the EM-X270 Datasheet

Prices are periodically updated according to variations in component costs. Prices are subject to change without advance notice. To review recent changes click here.
Prices are specified in U.S. Dollars.

Small Quantity Orders

Prices specified above are for 1K unit orders. In order to calculate the price for another quantity, multiply the unit price (with options selected) by the factor listed in the table below:

QTY	Factor
100K	0.8
10K	0.9
1K	1.0
500	1.2
100	1.5
10	2.0
1	2.5

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EM-X270 - Embedded Mobile Device


with LCD	Top	Bottom

EM-X270 Highlights

Full-featured handheld computer board for embedded applications
Price starting from $122
Intel's XScale PXA270 CPU, up to 520 MHz, 32+32 KB cache, WMMX
128 Mbyte SDRAM
512 Mbyte Flash Disk
Cellular voice and GPRS modem
Integrated 3.5" 480 x 640 VGA display with touchscreen (optional)
Graphics controller supporting STN and TFT panels with 800 x 600 max resolution
see LCD panel support

WiFi 802.11b interface
Bluetooth interface
GPS receiver, Sirf-III chipset
Expansion connector
Camera Interface
SD / SDIO / MMC socket
Sound codec with integrated speaker and microphone
Slave and host USB port, serial port, GPIO's
Main and backup batteries, and battery charger
Very low standby and active power consumption
Size - 97 x 66 mm

EM-X270 is a full-featured computer board, designed specifically for handheld / mobile implementations. Its functional contents are similar to the latest generation of Pocket PC's and smartphones, including all types of wireless, satellite and cellular connectivity found in today's state-off-the-art mobile devices. Yet, it is designed to serve custom implementations, retaining the flexibility expected from an embedded computer board. Available with an optional display, battery with charger and keypad, the EM-X270 offers a self-contained solution requiring just an enclosure for implementing the final custom product.

The feature set of the EM-X270 board combines a 32-bit CPU, SDRAM, Flash Disk and vital computing peripherals. On-board wireless interfaces include WiFi, Bluetooth, GPS and cellular Voice/GPRS modem. The last interface enables the device to act essentially as a customized cellular phone.

EM-X270 has several connectors and slots as used in PDA's and also an internal extension connector for application-specific add-on's. Ready-to-run Windows CE and Linux packages are available from CompuLab.

See O/S Support Coverage Map

For more information,
see Developer Resources page

Block Diagram

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EM-X270 Features

"Option" column specifies the configuration code required to have the particular feature.
"+" means that the feature is available always.

CPU, Memory and Busses

Feature	Specifications	Option
CPU	Intel XScale PXA270, 312 / 520 MHz, WMMX 32 KB I-cache and 32 KB D-cache, WB, 128 MB address space DMA and Interrupt controllers, Timers	C
RAM	128 MB, SDRAM, 100 MHz, 32-bit	+
NAND Flash Disk	512 Mbytes, more in future.	+
External local bus	32-bit data, 26-bit address, variable rate up to 100 MHz	+

Peripherals

Feature	Specifications	Option
GPRS / GSM and cellular phone	Telit GE864 module. GSM 850, 900, DCS 1800 or PCS 1900 network communication services. GPRS Class 10, Voice, Circuit Switched Data transfer, Fax, Phone-book and SMS. On-board SIM card socket. Connector for external antenna	K
Bluetooth	Bluetooth V2.0+EDR system. CSR BlueCore4-ROM chipset, 2.4GHz band, up to 3Mbps. On-board ceramic chip antenna and connector for external antenna	+
WiFi Interface	Implements 802.11b wireless connectivity standard. Philips BGW200 chipset, 11 Mbps, 2.4 GHz band. On-board antenna and connector for external antenna	W
GPS	NAVMAN Jupiter32 receiver module, Sirf-III chipset. Supports the NMEA data messages protocol. Connector for external antenna	H
Graphics Controller	4/8/16 bit color, TFT / STN, resolution up to 800 x 600 x 16	+
Camera Interface	Direct camera sensor support, max resolution 2048 x 2048. 30 fps @ 320x240, 15 fps @640x480	+
USB	One USB Host/Slave port, 12 Mbps, 24-endpoints, OHCI v1.1	+
Serial Port (UART)	16550 compatible, max 921 kbps, RS232, full modem	+
General Purpose I/O	Up to 16 dedicated lines. Can also be used as interrupt inputs. Shared with keypad interface	+
Audio codec	Wolfson WM9715L, AC97 interface. On-board microphone and speaker connectors, and external audio jack	+
Touchscreen ctrl.	A part of the Wolfson WM9715L chip. Supports resistive touch panels	+
SD / MMC socket	Supports Multimedia Card, Secure Digital and Secure Digital I/O communications protocols. Data-transfer rates up to 19.5 Mbps for MMC and 1-bit SD/SDIO, and up to 78 Mbps for 4-bit SD/SDIO transfers	+
RTC	Real Time Clock, uninterrupted power supply	+

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Electrical, Mechanical and Environmental Specifications

Battery charger

Charger for board's lithium polymer battery. The power is supplied from a 5V source via the USB connector.

Active consumption

All contents, excluding GPRS: 0.2 - 2 W. GPRS: 1-2 W

Sleep consumption

10 - 20 mW, depending on configuration and mode

Dimensions

97 x 66 mm. Height: board - 6 mm, LCD - 5 mm, battery - 6 mm

Weight

Board - 100 gram, LCD - 80 gram, battery - 90 gram

MTBF

> 100,000 hours

Operation temperature
(specified for board only)
(on component case)

Commercial:	0^o to 70^o C
Extended:	-20^o to 70^o C
Industrial:	-40^o to 85^o C. Click for availability note

Storage temperature

-40^o to 85^o C

Relative humidity

10% to 90% (operation)
05% to 95% (storage)

Shock

50G / 20 ms

Vibration

20G / 0 - 600 Hz

Off-board Devices

LCD Panel	TPO/Philips TD035STEE1 - 3.5" TFT, 480 x 640 VGA, 16-bit parallel RGB interface, transflective, LED backlight, integrated touchscreen, below 1W consumption
Battery	Lithium polymer, 97 x 55 x 6 mm, 10 W/h. Designed for 8-10 hours of continuous operation under normal conditions
Keypad

For more information see:
- EM-X270 Reference Guide
- Developer Resources