XE900S_技术文档

XE900S-500

June 2005

XE900S-500 Smart Spread Spectrum Transceiver

Features

Description

* Small Size: 1.295” by 1.410” by 0.255”

The XE900S-500 combines a spread spectrum

transceiver and micro-controller in a single, easy-to-

use, FCC Part 15 Registered module. The embedded

communications controller manages the Frequency

Hopping Spread Spectrum (FHSS) link and the host

system interface.

* Serial Control and Configuration of the Wireless Link.

* Supports a 254 node point-to-multipoint network

* Programmable Transmit Power Output 100 to 500 mW.

* Typical Receiver Sensitivity -100 dBm

* Obstructed signal range to 1000 feet;

* Wireless Data Rate 76.8K bps, half-duplex

The XE900S-500 supports two unique features to

simplify wireless networking. Count-Off™ allows the

network master to quickly retrieve the status of 125

remote nodes with a single broadcast command.

SensorOnAir^TMeliminates the need for an application

controller by utilizing the communications controller to

directly manage analog inputs and digital control lines.

* Low power Consumption

XE900S-500: 1000 mA@ 3.3Volts; when transmitting

at 500 mW output power; less than 1 mA of current

flows in Sleep Mode or Power-Down modes

* SensorOnAir^TM(patent pending)allows direct

connection of sensors to the Smart Transceiver

* Count-Off^TM(patent pending) allows the host node to

download the status of all nodes in under 10 seconds.

Xecom also offers a low power spread spectrum model,

the XE900SL10, for applications that require less range.

The XE900SL10 has an obstructed range of 300 feet but

is smaller, costs less and uses significantly less power.

* Operating Temperature Range of -40 to +85 C

* FCC Part 15 Registered

XE900S-500 Block Diagram

Antenna

ROM

SAW

FILTER

Serial I/F

MUX

TRANSCEIVER

COMM.

CONTROLLER

Analog

Inputs

Digital I/O

SAW

FILTER

AMP

XECOM

(1)

XE900S-500

XE900S-500 MECHANICAL SPECIFICATIONS

F

E

H

Top View

G

B

I

C

H

A

D

Dimension Description

Inches

MM

32.89

35.81

6.48

A

B

C

D

E

F

ModuleWidth

1.295

1.410

0.255

0.125

0.134

0.995

0.100

0.155

1.100

Module Length

Module Thickness

MinimumLeadLength

AntennaWidth

3.18

3.40

Edge toAntenna

Pin to Pin Spacing

Edge to End of Pin Row

Pin Row Length

25.27

2.54

G

H

I

3.94

27.94

XECOM

(2)

XE900S-500

Layout PCB for XE900S-500 and XE900SL10

Despite the fact that the XE900S-500 is substantially

The XE900SL10 requires a separate pin row for Pins 10

through 14. These pins will be hidden under the XE900S-

500 module when the larger module is installed. The

XE900SL10 also includes one unique signal, Reset.

Reset is an active high signal that can be left

unconnected if no external reset is desired.

larger module than the XE900SL10, a common PCB

layout can be used to support both products. This

makes it easy to accommodate applications which

include nodes with both long range and short range

requirements.

The XE900S-500 and XE900SL10 can share board layout

because of common pin assignments. Pins 1 through 8

of the XE900SL10 are equivalent to Pins 3 through 10 on

the XE900S-500; they have the same functions and are

placed in the same sequence. Pin 9 on the XE900SL10 is

an unused pin and therefore does not conflict with the

ADC1 signal assigned to Pin 11 of the XE900S-500.

The figure below shows the overlapping layout that

supports both modules. The XE900S-500 outline and

pins are shown in green. XE900SL10 pins and outline are

shown in red.

XE900S-500/XE900SL10 Overlay

Gnd

Vcc

1

XE900S-500

2

/TXD

3/1

4/2

5/3

6/4

7/5

8/6

9/7

10/8

11/9

12

XE900SL10

/RXD

/CTS

/RTS

Reset

ADC0

ADC1

Vcc

DIO3

14

13

12

11

10

DIO2

DIO1

DIO0

Gnd

ADC1/NC

ADC0

XECOM

(3)

XE900S-500

Using the XE900S-500 Power Saving Modes

The XE900S-500 includes three low power operating

RF Monitor Mode: The XE900S-500 includes 4 RF

monitor modes. In each of these RF Monitor modes the

transceiver sits in power down mode for a prescribed

period of time. The transceiver then wakes up, turns on

its receiver and checks for incoming messages. If no

messages are received the transceiver returns to power

down mode after about 200 milliseconds. If a carrier is

detected, the transceiver completes the transaction

before returning to power down mode. Intervals of 2

seconds (#P3, 4 seconds (#P4), 8 seconds (#P5) and 16

seconds (#P6) can be selected.

modes (Sleep, Power-Down and RF Monitor) to allow

the host application to make maximum use of the

available power. The #P command determines how the

transceiver will operate when not being asked to

transmit or receive an RF signal. Below are descriptions

of all of the XE900S-500 operating modes.

IDLE: In Idle Mode all circuits within the XE900S-500 are

powered and available for immediate action. This

includes the RF receiver which actively monitors the air

for an incoming communications request. Current draw

in Idle Mode is typically 23 milliamps.

RF Receive Mode: In RF Receive Mode the XE900S-500

is actively receiving an incoming 900 MHz data signal.

Current draw in RF Receive Mode is typically 35

milliamps.

SLEEP: In Sleep Mode all circuits within the XE900S-500

are powered-down to reduce consumption. The

XE900S-500 will not accept commands or respond to

incoming RF communications requests. Any input on

the TXD line will wake the transceiver and return it either

the Idle or Power-Down Mode which ever mode it was

last in before being put into Sleep Mode. Current draw in

Sleep Mode is less than 100 microamps.

RFTransmit Mode: In RF Transmit Mode the XE900-500

is actively transmitting a 900 MHz data signal. Current

draw in Transmit mode is no more than 1000 milliamps

with the transmit output power set to maximum, 500

milliwatts.

Power-Down: In Power-Down Mode all RF circuitry is

shut down but the communications controller remains

active to accept AT commands. In this mode the

XE900S-500 cannot respond to incoming RF

communications requests. If a transmit RF or Receive RF

command is received, the XE900S-500 can activate the

RF section in under 200 microseconds. Current draw in

Power-Down Mode is less than 800 microamps.

AT Command Control

The power saving modes are controlled by the AT#Pn

command, see below.

AT#P0 - Sets the transceiver to Idle mode.

AT#P1 - Sets the transceiver to Sleep Mode.

AT#P2 - Sets the transceiver for Power-Down Mode.

AT#P3 - RF Monitor Mode (2 second interval)

AT#P4 - RF Monitor Mode (4 second interval)

AT#P5 - RF Monitor Mode (8 second interval)

AT#P6 - RF Monitor Mode (16 second interval)

XECOM

(4)

XE900S-500

XE900S-500 PIN CONFIGURATION

GND

VCC

1

XE900S-500

Top View

2

/TXD

/RXD

/CTS

/RTS

3

4

5

6

DIO3

DIO2

DIO1

DIO0

ADC1

ADC0

7

8

9

10

11

12

SIGNAL PINS

DESCRIPTION

Ground

VCC

1

2

3

4

5

Common voltage reference for the XE900S-500.

3.3 Volt power for the XE900S-500.

/TXD

/RXD

/CTS

Transmit Data is the data input to the XE900S-500

Received Data is the data output from the XE900S-500.

Clear to Send provides hardware flow control from the XE900S-500. The XE900S-500

drives /CTS high to signal the host to temporarily stop the flow of data on the /TXD.

/RTS

6

Request to Send provides hardware flow control from the host system. The host system

drives /RTS high to signal the XE900S-500 to temporarily stop the flow of data on /RXD.

DIO3

DIO2

DIO1

DIO0

ADC1

7

8

DIO3 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900S-500.

DIO2 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900S-500.

9

DIO1 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900S-500.

10

11

DIO0 may be programmed as either a digital input or digital output. It connects directly to

the communications controller in the XE900S-500.

Analog Input 1 to the XE900S-500 communications controller. ADC1 connects to an

internal 12-bitAnalog to Digital Convertor. ADC0 may also be configured as a digital

input if no analog inputs are required.

ADC0

12

Analog Input 0 to the XE900S-500 communications controller. ADC0 connects to an

internal 12-bitAnalog to Digital Convertor. ADC0 may also be configured as a digital

input if no analog inputs are required.

XECOM

(5)

XE900S-500

ABSOLUTE MAXIMUM RATINGS

VCC

Storage Temperature

3.9 Volts

-55^OC to +125^OC

-40^OC to +85^OC

Operating Temperature Range

WARNING: Exceeding any of these ratings will void the warranty and may damage the device

XE900S-500 ELECTRICAL SPECIFICATIONS

Parameter

Min

Typ

Max

Units

Comments

VCC

2.7

3.3

3.6

Volts

mA

Transceiver power

ICC

1000

Transmit (500 mW output)

35

23

mA

Receive Mode

Idle Mode

2.2

1.1

0.6

0.3

Avg; 2-sec RF Monitor interval

Avg; 4-sec RF Monitor interval

Avg; 8-sec RF Monitor interval

Avg; 16-sec RF Monitor interval

Power-Down Mode

0.8

0.10

Sleep Mode

Output Power:

100

500

mW

dBm

feet

50 Ohm Load

Wireless Receive Sensitivity

-100

1000

50

Range thru Physical Obstructions

500 mW output

Frequency Hopping Channels

Frequency Band

902

2.25

928

MHz

Ohms

Volts

Antenna Output Impedance

50

Voh

Vol

Vih

Vil

VCC =3.3 Volts

0.75

XECOM

(6)

XE900S-500

XE900S-500 TYPICAL CONNECTION DIAGRAM

3.3V

Antenna

C1 C2 C3

C4 C5

L1

GND

VCC

/TXD

/RXD

/CTS

/RTS

DIO3

DIO2

DIO1

DIO0

ADC1

ADC0

Host

Serial

I/F

Parts List for XE900S-500 Typical Connection Diagram

Reference

Designation

Qty

1

Description

C1

Capacitor, Electrolytic, 100 ufd, 10 Volts

Capacitor 0.1 ufd, 10 Volts

Capacitor 47 pfd, 10 Volts

Coilcraft 0603HC-7N5XJB

50 Ohm, 1/4 Wave;

C2, C4

C3, C5

L1

2

1

Antenna *

1

* TheAntenna connector on XE900S-500 models is a Male MMCX

connector. An female MMCX to Female SMA adapter is needed for

the antenna connection

XECOM

(7)

XE900S-500

XE900S-500 COMMUNICATIONS CONTROLLER

Command Prefix - Each command, except the A/

The XE900S-500 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.

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 XE900S-500 by comparing the

parity bits of the "A" and the "T" characters.

HOSTINTERFACE

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.

The XE900S-500 has two primary interfaces to 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.

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.

RS232 Interface

The XE900S-500 supports a 4-signal serial interface. For

most applications the XE900S-500 will act as a DCE. Control

and configuration of the XE900S-500 takes place through

the serial interface using modem-likeAT commands. The

serial data rate is configurable from 1200 bits per second

to 115.2K bits per second. The supported serial interface

signals are listed below.

Result Codes - Aresult 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.

/TXD - Transmit Data; the input to the XE900S-500 for

AT commands and Data to be transmitted on the

wireless network.

Disconnect Sequence - A three character sequence

initiates a disconnect of the wireless link. The sequence

“~~~” is assigned to disconnect the link.

/RXD - Received Data; the output from the XE900S-500

for received RF data and responses to AT

commands.

DIRECTCONNECTIONOFSENSORS:

SensorOnAir^™

/RTS - Request to Send, provides the hardware flow

control input to the XE900S-500. The DTE

removes RTS to stop the XE900S-500 from

sending more data on the RXD line.

Sensors can be connected directly to the XE900S-500

without requiring an applications controller. In this

SensorOnAir™ configuration the XE900S-500

communications controller controls the operation of the

sensors.

/CTS - Clear to Send, is the hardware flow control output

from the XE900S-500. The XE900S-500

deactivates Clear to Send to advise then host to

stop inputting data on the TXD lead.

Sensor I/O Lines

SensorOnAir controls the operation of 6 I/O lines to the

XE900S-500. 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 use 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.

XE900S-500ATCommand Format

AT commands issued to the XE900S-500 follow a strict

format. Each command begins with the prefix AT and

ends with

a carriage return. The XE900S-500

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.

XECOM

(8)

XE900S-500

XE900S-500 COMMUNICATIONS CONTROLLER

Configuring the XE900S-500 for Sensor Operation

All SensorOnAir control functions for the analog inputs

and digital I/O’s are performed by the communications

controller within the XE900S-500. Modem-like AT

commands loaded through the serial interface, program

the functions of the analog and digital I/O lines. The AT

commands used to program the SensorOnAir functions

are then stored in the XE900S-500 Flash memory. This

allows the XE900S-500 to be first programmed and then

installed in the application. The communications

controller uses the information stored in Flash memory to

WIRELESSCOMMUNICATIONS

The communications controller manges the RF Link. This

includes the frequency hopping algorithm for spread

spectrum operation; collision avoidance, node

addressing, and packetizing data. The communications

controller allows support for point-to-point, point-to-

multipoint or multipoint networks.

Carrier Sense MultipleAccess (CSMA)

To prevent collisions between network nodes the

XE900S-500 uses a Carrier Sense MultipleAccess protocol

for each network transceiver. In normal communications

all nodes, including the Master node in a point-to-

Multipoint network, listen for communications activity

before initiating a session. If a wireless link already exists,

the transceiver waits until that session is complete before

initiating a wireless link.

control the analog and digital I/O lines.

SensorOnAir Commands^™

Below is a list of the AT commands used to program the

direct control of sensors using the communications

controller in the XE900S-500.

S107 - Defines the function of the programmable I/O lines.

The two analog input lines, ADC0 and ADC1, can

also be defined as digital I/O lines if needed. The four

programmable digital I/O lines, DIO0, DIO1, DIO2,

and DIO3; can be set as either inputs or outputs. The

value of this command is stored in flash memory within

the XE900S-500.

Data Packets

All data presented by the system host is placed into

packets by the XE900S-500 communications controller

for transmission across the wireless link. These packets

provide addressing and error correction for the wireless

communications. The communications controllers place

the data in packets only for the wireless link. The data is

extracted from the packets before being sent out the serial

interface.

AT&IAn? - This command allows a local host to read the value

of Analog Input “n.”

File TransferMode

AT&IDn? - This command allows a local host to read the

status of Digital I/O “n.”

Xecom’s XE900S-500 incorporates a File Transfer mode

that uses a simplified networking protocol so that the

maximum data transfer rate is achieved. In this mode the

XE900S-500 does not automatically retransmit blocks

containing errors. A CRC 16 checksum is calculated,

transferred at the end of the file, and checked by the

receiving unit. An “ERROR” message is displayed if the

checksum calculated at the receive end does not match

the checksum transmitted with the data.

AT&IDn=z -

This command allows a local host equipment to

set the condition of the local digital output “n.” When

z=0 the output is set to a logic low; when z=1 the

output is set to a logic high.

AT#IxxxAn? - This command allows the value ofAnalog Input

“n” on node address “xxx” to be read remotely.

AT#IxxxDn? - This command allows the status of Digital I/O

“n” on node address “xxx” to be read remotely

The File Transfer Mode is controlled by the AT#T

command. The format of the command isAT#Txx; where

xx is the destination address of the file. Following is a

sample file transfer.

AT#IxxxDn=z -

This command allows the condition of the

local digital output “n” on node address “xxx” to be

set remotely. When z=0 the output is set to a logic

low; when z=1 the output is set to a logic high.

XECOM

(9)

XE900S-500

XE900S-500 COMMUNICATIONS CONTROLLER

Sample File Transfer

Transmitter

Receiver

TXD RXD

TXD

RXD

Description

Initiate File Transfer

Link Established

AT#T01<cr>

:<cr>

FILE<cr>

abc...z

File Data

3 sec pause in data

A718<cr>

OK<cr>

or

Checksum at End of File Transfer

File Transfer Successful

ERROR<cr>

Error Detected in File Transfer

Notes: The above example shows that the file transfer is assumed to be completed if three seconds pass with no data

being presented to the TXD input on the serial port.

File Transfer Mode cannot be used to send binary data.

Multipoint Network

System designers using the XE900S-500 can create a point-to-multipoint network with up to 125 remote nodes. The

master node is assigned address 1. The remote nodes are assigned address from 2 to 126. Xecom created Count-Off

to insure efficient network operation. Count-Off allows the master node to poll the entire network in less than 10

seconds. The Count-Off creates a temporary time division multiplexing scheme which permits each node to report its

status without the handshaking sequence normally required for a wireless data exchange.

The Count-Off sequence is initiated by the AT#C command from the host system. The Master node broadcasts the

Count-Off command to all network nodes. Upon receipt of the Count-Off broadcast each remote node initializes an

internal timer. Then in sequence by address each node sends an 8-byte status message to the Master. The status

message is programmed with theAT#E: orAT#E= command. Due to difficulties in synchronizing the spread spectrum

signals, a node may sometimes miss the Count-Off command. The network administrator should poll any node that

does not respond to the Count-Off request to insure the network integrity

Using Count-Off network reporting will be completed in less than 10 seconds. Based on the status information the host

can then elect to service any of the remote nodes.

COUNT-OFF™ SEQUENCE

Node 1

Node n

Node 2

Node n

Node 2

Node n

Node 2

Node n

Node 2

Node 3

Node 4

Node 3

Node 4

Node 3

Node 4

Node 3

Node 4

Node 9

Node 8

Node 9

Node 8

Node 9

Node 8

Node 9

Node 8

Master

Node 7

Node 5

Node 7

Node 5

Node 7

Node 5

Node 7

Node 5

Node 6

T₁- Node 1 Transmits

8-Byte Status

T_n- Node n Transmits

8-Byte Status

T₀- Master Broadcasts

Count-Off Initiation

T₂- Node 2 Transmits

8-Byte Status

Count-Off Complete

XECOM

(10)

XE900S-500

AT COMMANDS

An asterisk indicates the factory default

&IDn? Read Local Digital Input “n” - This command allows

the host equipment to read the status of the local digital

inputs.

A

Answer Command - forces the smart transceiver

respond to a summons from another wireless device.

n=0 Read input DIO0

Dn Initiate a Wireless Link - attempts to establish a

n=1 Read input DIO1

connection with the transceiver at address n.

n=2 Read input DIO2

En

In

Echo Characters - determines if the XE900S-500 will

echo the characters received on its serial interface during

command mode.

n=3 Read input DIO3

n=4 Read input DIO4 (pin shared with ADC0)

n=5 Read input DIO5 (pin shared with ADC1)

n=0 Characters not Echoed

n=1 Characters Echoed *

&IDn=z Set Local Digital Output “n” - This command

allows the host equipment to set the condition of the

local digital outputs. When z=0 the output is set to a

logic low; when z=1 the output is set to a logic high.

Identification - displays product identification code.

n=0 Display Product Code

n=1 Display Product Name

n=0 Set output DIO0

n=1 Set output DIO1

n=2 Set output DIO2

n=3 Set output DIO3

n=2 Display Model Number

n=3 Display Copyright

n=4 Display Firmware Revision

Qn Result Code Display - determines if result codes will

&Kn Flow Control - selects the type of flow control to be

be displayed.

used between the system host and the XE900S-500

n=0 Display Result Codes *

n=0 Flow Control Disabled

n=1 Do not Display Result Codes

n=3 RTS/CTS, hardware Flow Control

n=4 XON/XOFF, in-band Flow Control

Sn= Set Value of Register Sn

Sn? Read Value of Register Sn

&V View Active Configuration - sends the active

configuration data to the system host.

Vn Response Type - selects Full Word or Numeric

&Wn Store Current Configuration - loads the current

XE900S-500 configuration into either User Profile 0 or

User Profile 1.

responses

n=0 Numeric Responses

n=1 Full Word Responses *

n=0 load configuration into User Profile 0

n=1 load configuration into User Profile 1

Zn

Reset - executes a soft Reset

n=0 Reset to Values Stored in User Profile 0 *.

n=1 Reset to Values Stored in User Profile 1

#B

Wireless Broadcast Mode - initiates wireless broadcast

mode for diagnostic purposes.

&F Restore Factory Settings - returns all configuration

#C Count-Off Request (ASCII) - Initiates a “count-off’

sequence in the network with node status to be reported

in ASCII format.

commands and registers to their factory default values.

&IAn? Read LocalAnalog Input “n” - This command allows

the host equipment to read the values of the local analog

inputs.

#E: Count-Off Response (ASCII) - Programs the nodes 8

byte response to a “count-off’ request from the network

hub in ASCII format.

n=0 Read input ADC0

n=1 Read input ADC1

#E= Count-Off Response (Hex) - Programs the nodes 8

byte response to a “count-off’ request from the network

hub in hexadecimal format.

XECOM

(11)

XE900S-500

AT COMMANDS

#IxxxAn? Read Analog Input “n” at Node Address xxx -

This command allows analog input values at any node

to be read remotely.

#IxxxDn=z Set Digital Output “n” at Node Address xxx

- This command allows the condition of the digital

outputs to be modified remotely. When z=0 the

output is set to a logic low; when z=1 the output is set

to a logic high.

n=0 Read input ADC0

n=1 Read input ADC1

n=0 Set output DIO0

n=1 Set output DIO1

n=2 Set output DIO2

n=3 Set output DIO3

#IxxxDn? Read Digital Input “n” at Node Address xxx -

This command allows the status of the digital inputs at

any node to be read remotely.

n=0 Read input DIO0

n=1 Read input DIO1

#Pn Low Power Operation - Allows the XE900S-500 to

n=2 Read input DIO2

operate in reduced power modes.

n=3 Read input DIO3

n=0 Selects Normal Power Mode

n=4 Read input DIO4 (pin shared with ADC0)

n=5 Read input DIO5 (pin shared with ADC1)

n=1 Places Transceiver in Sleep Mode;

n=2 Places Transceiver in Power-Down Mode

#R

Receive Broadcast - Allows XE900S-500 to receive a

broadcasted message and present it on the serial

interface.

#Txx File Transfer - initiates a file transfer to the

destination address xx.

XE900S-500 Responses

Numeric

Full Word

Description

0

OK

Successfully executed command line

1

2

3

4

6

7

8

9

CONNECT RF

RING

Wireless Connection Established

Wireless Link Request Detected

Lost Wireless Link

DISCONNECT

ERROR

Error in command line, or file transfer

Failed to Establish Wireless Link

Link Request Time Out has occurred

No Response to Count-Off Request

Wireless Link is not available

File Transfer Mode

NO CONNECTION

BUSY

SORRY

WAIT

FILE

XECOM

(12)

XE900S-500

XE900S-500 Configuration Registers

S0

Answer Wireless Link Request: S0 determines if the S23 Serial Interface Data Rate - S23 stores the serial

XE900S-500 will automatically respond to a wireless

link request.

interface data rate.

Range 1-10

S0=0

S0=1

No Automatic response to link requests

Automatically respond to link requests

1 = Set serial data rate to 1200 BPS

2 = Set serial data rate to 2400 BPS

3 = Set serial data rate to 4800 BPS

4 = Set serial data rate to 9600 BPS*

5 = Set serial data rate to 14400 BPS

6 = Set serial data rate to 19200 BPS

7 = Set serial data rate to 28800 BPS

8 = Set serial data rate to 38400 BPS

9 = Set serial data rate to 57600 BPS

10 = Set serial data rate to 115200 BPS

S0=128 Enter Broadcast mode on power-up. The

command must be stored in nonvolatile

memory using the AT&W command.

S2 Wireless Disconnect Character - S2 sets the ASCII

character to be used in the link disconnect sequence.

The default character is the tilde “~”.

Range: 0-255

Default: 126

S7 Link Set-up Timer - S7 sets the length of time in

seconds that the transceiver will attempt to create a link

with the destination node.

Default: 4

S39 Bit-mapped Register - S39 stores the value of the AT&K

Range: 0-60

Default: 10

command.

S104 Group ID Number - S104 sets the Group ID number for

the XE900S-500. Up to “n” groups may be active in the

same area. Only transceivers with the same Group ID

number can communicate.

S10 Link Recovery Timer - S10 sets the length of time in

seconds that the transceiver tries to recover a broken

link.

Range: 0-255

Default: 0

Range: 0-60

Default: 10

S105 XE900S-500 ID Number - S105 sets the ID number for

the XE900S-500. Each unit on the Base Access Network is

required to have a unique ID number.

S12 Disconnect Guard Timer - S12 sets the guard timer in

milliseconds before and after the disconnect sequence.

If any characters other than the disconnect sequence are

received within the window defined by S12 the

disconnect request will be ignored..

Range: 1-254

Range: 0-255

Default: 20

Units:

Milliseconds

S14 Bit-mapped Register - S14 stores the values of the

ATE, ATQ and ATV commands.

XECOM

(13)

XE900S-500

XE900S-500 Configuration Registers

S107 I/O Configuration - S107 is a bit-mapped register

S108 Transmit Level Control - S108 sets the transmit level

which defines the local programmable I/O lines.

Range: 0-3

Bit 0 = 0 -ADC0 andADC1 used as Programmable I/O

= 1 - ADC0 and ADC1 defined for Analog use

0

20 dBm

23 dBm

26 dBm

27 dBm

1

Bit 1 = reserved

2

3

Bit 2 = 0 - DIO0 used as an output

= 1 - DIO0 used as an input

Default: 3

Bit 3 = 0 - DIO1 used as an output

= 1 - DIO1 used as an input

Bit 4 = 0 - DIO2 used as an output

= 1 - DIO2 used as an input

Bit 5 = 0 - DIO3 used as an output

= 1 - DIO3 used as an input

Bit 6 = 0 - DIO4 used as an output (Bit 0 = 0)

= 1 - DIO4 used as an input

Bit 7 = 0 - DIO5 used as an output (Bit 0 = 0)

= 1 - DIO5 used as an input

Default: 193

XECOM

(14)

XE900S-500

FCC PART 15 REGULATIONS

Warning: RF Exposure

Mounting the XE900S-500 in YourAssembly

The XE900S-500 must be mounted horizontally on your

printed circuit board to maintain proper orientation of

the transceiver. Standoffs should also be used on the

side opposite the pin row to maintain clearance

between the XE900S-500 and you printed circuit board.

The XE900S-500 may not be co-located with any other

antenna or transmitter.

The XE900S-500 is approved for mobile, base station

and mobile applications. A minimum separation of 20

centimeters should be maintained between the antenna

and the equipment operator. For mobile applications

check the minimum separation distances defined below.

To ensure compliance, operation at distances closer

than those defined is not recommended.

The Warning message below must be included in the

user Manual for the end product.

XE900S-500Antenna

The XE900S-500 is certified for compliance to FCC Part

15 rules only using the Xecom XE900A500, 1/4 wave

monopole antenna. Use of any other antenna violates

FCC Part 15 rules.

To comply with FCC RF exposure requirements

for mobile transmitting devices, this transmitter

should only be used or installed at locations where

there is at least 20 cm separation distance between

the antenna and all persons.

FCC Part 15 Certification

The XE900S-500 has been certified per FCC Part 15 rules

for integration into OEM products without further

testing or certification. This certification is your

assurance that the XE900S-500 will not cause harmful

interference.

FCC Notifications

The XE900S-500 generates radio frequency energy. It

must be installed according to the manufacturer’s guide-

lines stated in the data sheet or it has the potential to

cause interference with other radio devices. Testing has

been performed to assure that it conforms with the FCC

Part 15 rules for intentional and unintentional radiators.

Labeling Requirements

FCC rules require the Original Equipment Manufacturer

using the XE900S-500 to place an appropriate label on

the outside of the finished equipment. The label must

be clearly visible and include the information shown

below.

No further EMI compliance testing of the transmitter is

required as long as the 20 cm separation and co-location

requirements are observed. Each new use of the module

will, however, need to be scanned for unintentional ra-

diation from digital clocks, etc.

Contains Transmitter Module

FCC ID: DWE-XE900S-500

WARNING:

This device complies with Part 15 of the FCC Rules.

Its operation is subject to the following conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any received interference

including interference that may cause undesired

operation.

All necessary calibration has been performed at the time

of manufacture. Any modification of the device after it

leaves the factory is a violation of FCC rules.

Limitations

The XE900S-500 is registered under FCC Part 15 Rules.

To utilize this registration on your OEM System you

must follow the applications circuit provided in this

data sheet and use one of the listed antennas. Any

changes or modifications to the recommended circuit

must be approved by Xecom. Failure to seek Xecom’s

approval for modifications could void certification of

the end product.

XECOM

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XE900S-500

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.

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 Incorporated

374 Turquoise Street, Milpitas, CA 95035

Ph:408-942-2200 Fax:408-942-1346 E-Mail: info@xecom.com

XECOM

(16)

XE900S-500


型号：	XE900S
厂家：	ETC
描述：	Smart Spread Spectrum Transceiver 智能扩频收发器
文件：	总16页 (文件大小：71K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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