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CM-X255
Computer-On-Module
Not
recommended for new designs, see expected life
time
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Top View
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Bottom
View
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| CM-X255
Highlights |
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Full-featured Single Board
Computer on module
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Basic
configuration price below $50 ! |
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Intel's
XScale PXA255 CPU, up to 400 MHz, 32+32 KB
cache |
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General
purpose bus and optional PCI, LPC, AC97 busses |
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16
- 64 Mbyte
SDRAM |
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1 -
512 Mbyte Flash Disk |
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Graphics Controller for STN
and TFT panels
see
LCD panel support |
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PCMCIA controller |
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Sound codec with speaker and microphone support (optional) |
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Touchscreen
Controller (optional) |
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Slave and host USB ports
(optional) |
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Standard peripherals: serial ports, LPT port, I/O ports, FDC, PS/2
keyboard and mouse, IrDA, HDD interface (optional) |
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10/100BaseT
Ethernet port (optional) |
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Power consumption below 1W |
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66 x 44 mm size |
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Interchangeable
with other CORE modules via CAMI connectors |
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SB-X255 - turns the CM-X255 module into a
PC/104+ single board computer |
For more information, see Developer
Resources page.
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The CM-X255
module is a tiny "system-on-module" computer, designed to serve as a building
block in embedded applications. CM-X255 is advanced and
backward-compatible version of original ARMCORE module, containing
several significant improvements.
The CM-X255 module has all the components needed to run operating
systems such as Linux and Windows CE. Ready packages for these
operating systems are available from
CompuLab. The CM-X255 is both small and inexpensive. Its
small size allows integration into hand-held and mobile
applications, providing a powerful computing core. Its exceedingly low
price makes it an ideal selection for cost-sensitive
applications. Based on Intel's XScale architecture, the CM-X255 delivers a price/performance ratio significantly better than available
from x86-based counterparts.
The feature set of the CM-X255 module combines a
32-bit CPU, SDRAM, Flash Disk and vital computing peripherals. For embedded
applications, the CM-X255 provides a 32-bit PCI bus, 100Mbit Ethernet,
serial ports, general purpose I/O lines and many
other essential functions.
Standardized CAMI ("CompuLab's
Aggregated Module Interface") connectors of CM-X255 module allow interchangeability with
other CORE modules, enabling the flexibility required in
a dynamic market where application requirements
can change rapidly.
Software support for
the CM-X255 includes ready-to-run packages for:
* Linux
* Windows CE
See O/S Support Coverage Map
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Block Diagram
CM-X255
Features
"Option" column
specifies the configuration code required to have the particular
feature. "+" means that the feature is available always.
CPU & Core logic
| Feature |
Specifications |
Option |
| CPU |
Intel XScale PXA255, 100 - 400 MHz |
+ |
| Address Space |
128 MB |
+ |
| Internal Bus |
32-bit, 100 MHz |
+ |
| Cache |
32 KB I-cache and 32 KB D-cache, WB |
+ |
| Core Logic |
DMA and Interrupt controllers,
Timers |
+ |
| RTC |
Real Time Clock, powered
by external lithium battery |
R |
Memory and Busses
| Feature |
Specifications |
Option |
| DRAM |
16 - 64 MB, SDRAM, 100 MHz,
32-bit |
+ |
| NOR Flash Disk |
1 - 4 Mbytes |
+ |
| NAND Flash Disk |
16 - 512 Mbytes, optional |
N |
| I/O Tolerance |
Local Bus - 3.3V, PCI -
5V |
+ |
| External Busses |
Local bus / PCMCIA, PCI, LPC, AC97 |
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| External local bus |
16-bit,
variable rate up to 100
MHz |
+ |
| AC97 |
AC97 / AMC97 Rev 2.1
compliant |
+ |
| PCI bus |
32-bit, 2.1-compliant, 132 MB/s,
arbiter for 4 masters |
B |
| LPC bus |
Host, 33 MHz, Intel LPC v1.0 compatible |
B |
| JTAG Interface |
Available |
+ |
Peripherals
| Feature |
Specifications |
Option |
| Graphics Controller |
4/8/16 bit color, TFT / STN,
resolution up to 1024 x 768, frame buffer in system SDRAM. |
+ |
| USB |
One Slave port, 12 Mbps
Two Host ports, 1.5 / 12 Mbps, OHCI v1.0 compliant |
+
B |
Serial Ports
(UARTs) |
Up to 5 UART ports, 16550 compatible,
max 230 - 960 kbps
COM-A - RS232 Rx/Tx, partial modem
COM-B - TTL, Rx/Tx
COM-C - TTL, full modem
COM-D - TTL, full modem
COM-E - TTL, Rx/Tx, shared with FIR
COM-F - TTL, partial modem. (shared with other essential funct.) |
+
B
+
B,S
+
+
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| General
Purpose I/O |
5 dedicated lines plus
about 40 lines shared with other functions. Can be also used as interrupt
inputs. |
+ |
| Hard Disk
Interface |
IDE, PIO mode |
+ |
| LPT - Parallel Port |
Bi-directional with EPP
mode. |
B,S |
| Floppy Disk Interface |
Routed through LPT pins |
B,S |
| Keyboard
Interface |
PS/2 or
redirection from COM |
B,S |
| Mouse Interface |
PS/2 |
B,S |
| Infrared (IrDA) Port |
Up to 115Kbps in SIR mode, 4Mbps in FIR
mode |
+ |
| Ethernet |
MAC & PHY, 10/100BaseT,
Activity LED's. The ethernet port is implemented differently than in
the previous version:
Version 2 - Realtek 8139, on PCI bus. Requires Interface Bridge
Version 3 - Davicom DM9000, on local bus |
B,E
E |
| Audio codec |
Crystal CS4299 or Phillips UCB1400, AC97
interface, mono microphone input, stereo line input and 25 mW output for active speakers |
A |
| Touchscreen ctrl. |
A part of the UCB1400 codec chip. Supports
resistive touch panels. (This feature is not available in
the previous version 2 of CM-X255) |
AT |
| PCMCIA controller |
Direct support for 1st slot,
hooks for 2nd slot, 8/16 bit interface |
+ |
Electrical,
Mechanical and Environmental Specifications
| Supply
Voltage |
Single 3.3V or dual 3.3V
/ 5.0V (with Super-I/O) |
| Power
consumption |
0.2 - 2 watt, depending on
configuration and CPU speed |
| Dimensions |
66 x 44 x 7 mm |
| Weight |
25 gram |
| MTBF |
> 100,000 hours |
| Operation
temperature (case) |
| Commercial: |
0o to 70o C |
| Extended: |
-20o to 70o
C |
| Industrial: |
-40o to 85o C. Click for availability
note |
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| Storage
temperature |
-40o to 85o
C |
| Relative
humidity |
10% to 90% (operation)
05% to 95% (storage) |
| Shock |
50G / 20 ms |
| Vibration |
20G / 0 - 600 Hz |
| Connectors |
2 x 140 pin, 0.6 mm |
| Connector
insertion / removal |
50 cycles |
For more information see:
- CM-X255
Reference Guide
- Developer Resources
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