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PDF ( 数据手册 , 数据表 ) XE900SL10

零件编号 XE900SL10
描述 Miniature Spread Spectrum Transceiver
制造商 Xecom
LOGO Xecom LOGO 


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XE900SL10 数据手册, 描述, 功能
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XE900SL10
June 2005
XE900SL10 Miniature Spread Spectrum Transceiver
Description
The XE900SL10 breaks new ground in Smart Transceiver
Technology. It is a 900 MHz, Spread Spectrum
Transceiver with integral micro-controller, just 1 inch
square. This miniature size combined with low power
consumption make the XE900SL10 perfect for mobile
and battery powered applications.
Xecom did not drop features to reduce size. The
XE900SL10 still supports Xecom’s Count-Off™ feature
enabling a scan of up to 125 remote nodes in under 10
seconds. SensorOnAir™ allows sensors and control
lines to utilize the embedded communications controller
in place of a host micro-controller .
Xecom also offers a high power spread spectrum model,
the XE900S-500, for applications that require greater
range. The XE900S-500 has an obstructed range of up
to 1000 feet in a larger but still small package.
The XE900SL10 transmits at up to 10 milliwatts with a
receive sensitivity of -100 dBm to provide an obstructed
range of 300 feet. All from a 1 inch square transceiver
consuming less than .2W of power.
Features
* Small Size: 1.0” by 1.0” by 0.26”
* Serial Control and Configuration of the Wireless Link.
* Supports a 254 node point-to-multipoint network
* Output Power Programmable from 0 to 10 mW;
* Maximum Receiver Sensitivity -100 dBm
* Obstructed signal range to 300 feet;
* Wireless Data Rate 76.8K bps, half-duplex;
* Power Consumption:
55 mA @ 3.3 Volts when transmitting at 10 mW
less than 1 mA in Sleep Mode or Power-Down modes
* SensorOnAirallows direct connection of sensors to
the Smart Transceiver
* Count-Offallows the master node to download the
status of all nodes in under 10 seconds.
* Operating Temperature Range of -40 to +85 C
* FCC Part 15 Registered
Antenna
XE900SL10 Block Diagram
ROM
SAW
FILTER
MUX
UHF
TRANSCEIVER
Serial
I/F
Analog
Inputs
Digital
I/O
XECOM
(1) XE900SL10







XE900SL10 pdf, 数据表
XE900SL10 COMMUNICATIONS CONTROLLER
The XE900SL10 uses an internal micro-controller to
control communications. This micro-controller manages
the interface to the host system, determines when the
communications link is available, and formats data for
the RF communications.
HOSTINTERFACE
There are two primary interfaces between the XE900SL10
and the system host; the serial interface and the direct
sensor interface supported by the SensorOnAir™
feature. Management of both interfaces is the
responsibility of the communications controller.
Serial Interface
A 4-signal serial interface links the host to the XE900SL10.
For most applications the XE900SL10 acts as a DCE.
Control and configuration of the XE900SL10 takes place
through the serial interface using modem-like AT
commands. Serial data rates from 1200 bits per second to
115.2K bits per second are supported. The serial interface
signals are listed below.
/TXD - Transmit Data; the input to the XE900SL10 for
AT commands and Data to be transmitted on the
wireless network.
/RXD - Received Data; the output from the XE900SL10
for received RF data and responses to AT
commands.
/RTS -
Request to Send, provides the hardware flow
control input to the XE900SL10. The DTE
deactivates /RTS to stop the XE900SL10 from
sending more data on the RXD line.
/CTS - Clear to Send, is the hardware flow control output
from the XE900SL10. The XE900SL10 deactivates
/CTS to advise the host to stop inputting data
on the TXD lead.
XE900SL10AT Command Format
AT commands issued to the XE900SL10 follow a strict
format. Each command begins with the prefix AT and
ends with a carriage return. The XE900SL10
communications controller accepts commands at data
rates from 1200 to 115,200 bps. The default serial data
rate is 9600 bps and can be changed using register S23.
The communications controller uses the AT command
prefix to automatically determine the parity of the
incoming characters.
Command Prefix - Each command, except the A/
command, begins with the AT prefix. The "A" and "T"
may be either both upper case or both lower case but
cannot be of different cases. The prefix identifies parity of
the commands sent to the XE900SL10 by comparing the
parity bits of the "A" and the "T" characters.
Command Line - Commands may be strung together in a
single command line of up to 30 characters. Commands in
the command string are executed in the sequence they
appear.
Omitted Parameters - Most commands include a
parameter which determines the function setting. When
the command parameter is omitted from the command
string, it is assumed to be a 0.
Result Codes - A result code is normally issued after each
action. Result codes may be provided as full words, one
or two digit numeric codes, or may be disabled all
together. Each result code ends with a carriage return
when numeric result codes are chosen. When full word
result codes are chosen, a Line Feed and Carriage Return
precede and follow each result code.
Disconnect Sequence - A three character sequence
initiates a disconnect of the wireless link. The sequence
“~~~” is assigned to disconnect the link.
DIRECT CONNECTION OF SENSORS:
SensorOnAir
Sensors can be connected directly to the XE900SL10
without requiring an applications controller. In this
SensorOnAirconfiguration the XE900SL10
communications controller controls the operation of the
sensors.
Sensor I/O Lines
SensorOnAir controls the operation of 6 I/O lines to the
XE900SL10. This includes 2 analog inputs, ADC0 and
ADC1, and 4 digital I/O lines, DIO0, DIO1, DIO2, and DIO3.
ADC0 andADC1 are connected to a 12-bit analog to digital
converter and using a 2.5 volt reference derived from VCC
as their reference voltage. The digital I/O lines can be
programmed to act as either inputs or outputs.
XECOM
(8) XE900SL10







XE900SL10 equivalent, schematic
Terms of Sale
Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM makes no war-
ranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of the de-
scribed devices from patent infringement. XECOM makes no warranty of merchantability or fitness for any purposes.
XECOM reserves the right to discontinue production and change specifications and prices at any time and without notice. This
product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual envi-
ronmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are
specifically not recommended without additional processing and authorization by XECOM for such application.
Xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xecom product. No other cir-
cuits, patents, or licenses are implied.
Life Support Policy
Xecom's products are not authorized for use as Critical Components in Life Support Devices or Systems.
Life Support Devices or Systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) sup-
port or sustain life, and whose failure to perform, when properly used in accordance with instructions provided in the labeling,
can be reasonably expected to result in significant injury to the user.
A Critical Component is any component of a life support device or system whose failure to perform can be reasonably ex-
pected to cause failure of the life support device or system, or to affect its safety or effectiveness.
Copyright, Xecom © 2005
While Xecom, Inc. has made every effort to ensure that the information presented here is accurate, Xecom will not be liable for any damages arising from errors or
omission of fact. Xecom reserves the right to modify specifications and/or prices without notice. Product mentioned herein are used for identification purposes
only and may be trademarks and/or registered trademarks of their respective companies.
XECOM
Xecom Incorporated
374 Turquoise Street, Milpitas, CA 95035
Ph:408-942-2200 Fax:408-942-1346 E-Mail: [email protected]
(16) XE900SL10










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