Laird Connectivity 44249AJ RF Transceiver Module User Manual

AeroComm Corporation RF Transceiver Module Users Manual

UserManual.wiki >

Laird Connectivity >

44249AJ User Manual HTML Version

Users Manual

AC4424

AC4424AC4424

AC4424

2.4 GHz OEM TRANSCEIVERS

2.4 GHz OEM TRANSCEIVERS2.4 GHz OEM TRANSCEIVERS

2.4 GHz OEM TRANSCEIVERS

Specifications Subject to Change

Specifications Subject to ChangeSpecifications Subject to Change

Specifications Subject to Change

User’s Manual

User’s ManualUser’s Manual

User’s Manual

Version 2.1

Version 2.1Version 2.1

Version 2.1

11160 THOMPSON AVENU

11160 THOMPSON AVENU11160 THOMPSON AVENU

11160 THOMPSON AVENUE

LENEXA, KS 66219

LENEXA, KS 66219LENEXA, KS 66219

LENEXA, KS 66219

(800) 492

(800) 492(800) 492

(800) 492-

-2320

23202320

2320

www.aerocomm.com

www.aerocomm.comwww.aerocomm.com

www.aerocomm.com

wireles

wireleswireles

wireless@aerocomm.com

s@aerocomm.coms@aerocomm.com

s@aerocomm.com

/8/2007

8/20078/2007

8/2007

DOCUMENT INFORMATION

DOCUMENT INFORMATIONDOCUMENT INFORMATION

DOCUMENT INFORMATION

Limited Warranty, Disclaimer, Limitation of Liability

Limited Warranty, Disclaimer, Limitation of LiabilityLimited Warranty, Disclaimer, Limitation of Liability

Limited Warranty, Disclaimer, Limitation of Liability

For a period of one (1) year from the date of purchase by the OEM customer,

AeroComm warrants the OEM transceiver against defects in materials and workmanship.

AeroComm will not honor this warranty (and this warranty will be automatically void) if

there has been any (1) tampering, signs of tampering; 2) repair or attempt to repair by

anyone other than an AeroComm authorized technician.

This warranty does not cover and AeroComm will not be liable for, any damage or failure

caused by misuse, abuse, acts of God, accidents, electrical irregularity, or other causes

beyond AeroComm’s control, or claim by other than the original purchaser.

In no event shall AeroComm be responsible or liable for any damages arising: From the

use of product; From the loss of use, revenue or profit of the product; or As a result of

any event, circumstance, action, or abuse beyond the control of AeroComm, whether

such damages be direct, indirect, consequential, special or otherwise and whether such

damages are incurred by the person to whom this warranty extends or third party.

If, after inspection, AeroComm determines that there is a defect, AeroComm will repair

or replace the OEM transceiver at their discretion. If the product is replaced, it may be a

new or refurbished product.

CopyrightCopyright

Information

InformationInformation

Information

The information contained in this manual and the accompanying

software programs are copyrighted and all rights are reserved by

AEROCOMM, Inc. AEROCOMM, Inc. reserves the right to make

periodic modifications of this product without obligation to notify

any person or entity of such revision. Copying, duplicating, selling, or

otherwise distributing any part of this product without the prior consent of

an authorized representative of AEROCOMM, Inc. is prohibited.

All brands and product names in this publication are registered

trademarks or trademarks of their respective holders.

This materi

This materiThis materi

This material is preliminary

al is preliminaryal is preliminary

al is preliminary

Information furnished by AEROCOMM in this specification is believed to be accurate.

Devices sold by AEROCOMM are covered by the warranty and patent indemnification

provisions appearing in its Terms of Sale only. AEROCOMM makes no warranty, express,

statutory, and implied or by description, regarding the information set forth herein.

AEROCOMM reserves the right to change specifications at any time and without notice.

AEROCOMM’s products are intended for use in normal commercial and industrial

applications. Applications requiring unusual environmental requirements such as military,

medical life-support or life-sustaining equipment are specifically not recommended

without additional testing for such application

/8/2007

8/20078/2007

8/2007

DOCUMENT I

DOCUMENT IDOCUMENT I

DOCUMENT INFORMATION

NFORMATIONNFORMATION

NFORMATION

Revision

RevisionRevision

Revision

Description

DescriptionDescription

Description

Version 1.0 11/7/2001 – Initial Release Version

Version 1.1 10/14/2002 – Not Released

Version 1.2 10/18/2002 – Full release of AC4424 specification

Version 1.3 11/19/2002 – Made Full-Duplex incompatible with Stream Mode

Version 1.4 12/09/2002 – Changed Sub Hop Adjust setting recommendations

Version 1.5 1/30/2003 – Removed all references to Commercial and Industrial temperature.

All products are now Industrial temperature. Changed Section 4.2.1 EEPROM

4.2.1 EEPROM 4.2.1 EEPROM

4.2.1 EEPROM

Byte Read

Byte ReadByte Read

Byte Read to allow multiple byte reads.

Version 1.6 4/30/2004 – Added warranty information. Updated agency compliancy. Added

new RSSI plot. Updated Channel Number information. Added configuration flow

chart and timing diagrams. Updated approved antenna table. Added AC4424-

10A information.

Version 1.7 5/5/2004 – Modified references from Table 9 to Table 11.

Version 1.8 5/10/2004 – Changed start-up time to reflect addition of microprocessor

supervisor. Updated Auto Config table.

Version 1.9 5/10/2005 - Added the following CC Commands; Sync Channel, EEPROM Byte

Read/Write and Soft Reset. Added AT Commands. Removed Configuration

command documentation (though the firmware will continue to support their

usage). Added Auto Destination and Random Backoff.

Version 2.0

Version 2.1

3/23/2006 - Removed Stream mode, FEC and Frequency Offset documentation.

Corrected Random backoff byte.

5/8/2007 – Updated RF channel settings and Table 10. Updated EEPROM

parameters section and added descriptions to all fields. Updated the EEPROM

byte write command description.

/8/2007

8/20078/2007

8/2007

TABLE OF CONTENTS

TABLE OF CONTENTS TABLE OF CONTENTS

TABLE OF CONTENTS

1. OVERVIEW ......................................................................................................................................6

2. AC4424 SPECIFICATIONS.............................................................................................................8

3. SPECIFICATIONS .........................................................................................................................10

3.1 INTERFACE SIGNAL DEFINITIONS .......................................................................................................10

3.2 ELECTRICAL SPECIFICATIONS.............................................................................................................11

3.3 SYSTEM TIMING .................................................................................................................................11

3.3.1 Serial Interface Data Rate .........................................................................................................12

3.3.2 Timing Diagrams.......................................................................................................................13

3.3.3 Maximum Overall System Throughput ......................................................................................15

4. CONFIGURING THE AC4424......................................................................................................15

4.1 EEPROM PARAMETERS ....................................................................................................................15

4.2 CONFIGURING THE AC4424 ..............................................................................................................19

4.3 COMMAND REFERENCE ......................................................................................................................20

4.4 AC4424 AT COMMANDS ...................................................................................................................21

4.4.1 Enter AT Command Mode .........................................................................................................21

4.4.2 Exit AT Command Mode............................................................................................................21

4.5 ON-THE-FLY CONTROL COMMANDS (CC COMMAND MODE) ............................................................22

4.5.1 Status Request............................................................................................................................22

4.5.2 Change Channel with Forced Acquisition Sync ........................................................................23

4.5.3 Server/Client..............................................................................................................................23

4.5.4 Sync Channel .............................................................................................................................24

4.5.5 Power-Down..............................................................................................................................25

4.5.6 Power-Down Wake-Up..............................................................................................................25

4.5.7 Broadcast Mode.........................................................................................................................25

4.5.8 Write Destination Address.........................................................................................................26

4.5.9 Read Destination Address..........................................................................................................26

4.5.10 EEPROM Byte Read..................................................................................................................26

4.5.11 EEPROM Byte Write .................................................................................................................27

4.5.12 Reset ..........................................................................................................................................27

5. THEORY OF OPERATION ..........................................................................................................28

5.1 HARDWARE INTERFACE......................................................................................................................28

5.1.1 TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3 respectively).............................28

5.1.2 Hop Frame (pin 6).....................................................................................................................28

5.1.3 CTS Handshaking (pin 7) ..........................................................................................................28

5.1.4 RTS Handshaking (pin 8) ..........................................................................................................28

5.1.5 9600 Baud/Packet Frame (pin 12).............................................................................................29

5.1.6 RSSI (pin 13)..............................................................................................................................29

5.1.7 Wr_ENA(EEPROM Write Enable) (pin 14) ..............................................................................30

5.1.8 UP_RESET (pin 15)...................................................................................................................31

5.1.9 Command/Data (pin 17)............................................................................................................31

5.1.10 In Range (pin 20).......................................................................................................................31

5.2 SOFTWARE PARAMETERS ...................................................................................................................32

5.2.1 RF Architecture (Server-Client/Peer-to-Peer) ..........................................................................32

5.2.2 RF Mode ....................................................................................................................................32

5.2.3 Random Back Off.......................................................................................................................33

5.2.4 Duplex Mode .............................................................................................................................33

5.2.5 Interface Timeout/RF Packet Size..............................................................................................34

/8/2007

8/20078/2007

8/2007

5.2.6 Serial Interface Baud Rate.........................................................................................................34

5.2.7 Network Topology......................................................................................................................35

5.2.8 Auto Config................................................................................................................................36

6. DIMENSIONS .................................................................................................................................37

7. ORDERING INFORMATION.......................................................................................................39

7.1 PRODUCT PART NUMBERS..................................................................................................................39

7.2 DEVELOPER KIT PART NUMBERS .......................................................................................................39

8. REGULATORY INFORMATION ................................................................................................40

8.1 FCC ...................................................................................................................................................40

8.2 CE......................................................................................................................................................42

8.3 APPROVED ANTENNA LIST .................................................................................................................43

Figures

FiguresFigures

Figures

Figure 1 - RSSI Voltage vs. Received Signal Strength ................................................................................ 30

Figure 2 – AC4424 with MMCX ................................................................................................................. 37

Figure 3 – AC4424 with Integral Antenna ................................................................................................... 38

Tables

TablesTables

Tables

Table 1 – Pin Definitions.............................................................................................................................. 10

Table 2 – DC Input Voltage Characteristics................................................................................................. 11

Table 3 – DC Output Voltage Characteristics .............................................................................................. 11

Table 4 – Timing Parameters........................................................................................................................ 15

Table 5 – Maximum Overall System Throughputs ...................................................................................... 15

Table 6 – EEPROM Parameters ................................................................................................................... 16

Table 7 – RSSI Board Rev History .............................................................................................................. 30

Table 9 – Baud Rate ..................................................................................................................................... 34

Table 10 – US and International RF Channel Number Settings................................................................... 35

Table 11 – Auto Config Parameters ............................................................................................................. 36

/8/2007

8/20078/2007

8/2007

AC4424 Features

AC4424 FeaturesAC4424 Features

AC4424 Features

 Simple 5V TTL level serial interface for fast integration

 Frequency Hopping Spread Spectrum for security and interference rejection

 Cost Efficient for high volume applications

 Low power consumption for battery powered implementations

 Small size for portable and enclosed applications

 Very Low latency and high throughput

 Industrial temperature (-40°C to 80°C)

1.1.

Overview

OverviewOverview

Overview

The AC4424 is a member of AeroComm’s ConnexRF OEM transceiver family. It is designed

for integration into OEM systems operating under FCC part 15.247 regulations for the 2.4

GHz ISM band.

The AC4424 is a cost-effective, high performance, 2.4 GHz frequency hopping spread

spectrum transceiver. It provides an asynchronous TTL level serial interface for OEM Host

communications. Communications include both system and configuration data. The Host

supplies system data for transmission to other Host(s). Configuration data is stored in an on-

board EEPROM. All frequency hopping, synchronization, and RF system data

transmission/reception is performed by the transceiver.

The AC4424 transceivers can be used as a direct serial cable replacement – requiring no

special Host software for operation. They also feature a number of On-the-Fly Control

Commands providing the OEM Host with a very versatile interface for any situation.

AC4424 transceivers operate in a Point-to-Point or Point-to-Multipoint, Client-Server or Peer-

to-Peer architecture. One transceiver is configured as a Server and there can be one or many

Clients. To establish synchronization between transceivers, the Server emits a beacon. Upon

detecting a beacon, a Client transceiver informs its Host and a RF link is established.

There are two data rates the OEM should be aware of:

• Serial Interface Data Rate – All transceivers can be configured to common PC

serial port baud rates from 110 bps to 288,000 bps.

• Effective Data Transmission Rate – The AC4424 is a highly efficient, low-latency

transceiver. The RF baud rate of the AC4424 is fixed at 576kbps and is

independent of the serial interface data rate.

This document contains information about the hardware and software interface between an

AeroComm AC4424 transceiver and an OEM Host. Information includes the theory of

operation, specifications, interface definition, configuration information and mechanical

drawing.

/8/2007

8/20078/2007

8/2007

The OEM is responsible for ensuring the final product meets all FCC and/or appropriate

regulatory agency requirements listed herein before selling any product.

/8/2007

8/20078/2007

8/2007

2.2.

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

GENERAL

GENERALGENERAL

GENERAL

Interface 20 pin mini-connector

Serial Interface Data Rate PC baud rates from 110 bps to 288,000 bps

Power Consumption (typical)

Duty Cycle (TX=Transmit; RX=Receive)

Duty Cycle (TX=Transmit; RX=Receive)Duty Cycle (TX=Transmit; RX=Receive)

Duty Cycle (TX=Transmit; RX=Receive)

10%TX

10%TX10%TX

10%TX

50%TX

50%TX50%TX

50%TX

100%TX

100%TX100%TX

100%TX

100%RX

100%RX100%RX

100%RX

PwPw

Pwr

-Down

DownDown

Down

AC4424-9AJ: 100mA 160mA 235mA 85mA

15mA AC4424-10: 90mA 115mA 140mA

85mA 15mA

AC4424-100: 100mA 160mA 235mA 85mA

15mA

AC4424-200: 115mA 235mA 385mA 85mA

15mA

Channels (used to create independent

networks)

US/Canada (10mW, 100mW, 200mW): 16

Europe & Japan Low Band(100mW, 9AJ): 20

Europe & Japan High Band(100mW, 9AJ): 20

Security One byte System ID

Interface Buffer Size Input/Output: 256 bytes each

RADIO

RADIORADIO

RADIO

Frequency Band US/Canada (10mW, 100mW, 200mW): 2.402 – 2.478

GHz

Europe & Japan Low Band(100mW, 9AJ): 2.406 – 2.435

GHz

Europe & Japan High Band(100mW, 9AJ): 2.444 – 2.472

GHz

Radio Type Frequency Hopping Spread Spectrum

Output Power (conducted, no antenna) AC4424-9AJ: 9mW typical

AC4424-10: 10mW typical

AC4424-100: 50mW typical

AC4424-200: 200mW typical

Effective Isotropic Radiated Power (EIRP with

3dBi gain antenna)

AC4424-9AJ: 9mW typical (integral antenna)

AC4424-10: 20mW typical

AC4424-100: 100mW typical

AC4424-200: 400mW typical

Voltage 5V nominal ±2%, ±50mV ripple

Sensitivity -90dBm typical @ 576kbps

Range (based on 3dBi gain antenna)

AC4424-9AJ: Indoors to 150 ft., Outdoors to 1000 ft.

AC4424-10: Indoors to 300 ft., Outdoors to 3000 ft.

AC4424-100: Indoors to 400 ft., Outdoors to 6000 ft.

AC4424-200: Indoors to 500 ft., Outdoors to 10000 ft.

ENVIRONMENTAL

ENVIRONMENTALENVIRONMENTAL

ENVIRONMENTAL

Temperature (Operating) Industrial: -40°C to 80°C

Temperature (Storage) -50°C to +85°C

Humidity (non-condensing) 10% to 90%

PHYSICAL

PHYSICALPHYSICAL

PHYSICAL

Dimensions 1.65” x 2.65” x 0.20”

Antenna AC4424-9AJ: Integra Antenna

AC4424-10: MMCX Jack or Integral Antenna

/8/2007

8/20078/2007

8/2007

AC4424-100: MMCX Jack

AC4424-200: MMCX Jack

Weight Less than 0.7 ounce

/8/2007

8/20078/2007

8/2007

1010

3.3.

Specifications

SpecificationsSpecifications

Specifications

3.1

3.13.1

3.1

IIINTERFACE

NTERFACE NTERFACE

NTERFACE S

SIGNAL

IGNAL IGNAL

IGNAL D

DEFINITIONS

EFINITIONSEFINITIONS

EFINITIONS

The AC4424 has a simple interface that allows OEM Host communications with the

transceiver. Table 1

Table 1 Table 1

Table 1 –

––

– Pin Definitions

Pin Definitions Pin Definitions

Pin Definitions, shows the connector pin numbers and associated

functions. The I/O direction is with regard to the transceiver. All I/O is 5VDC TTL level signals

except for RSSI. All inputs are weakly pulled High and may be left floating during normal

operation.

Table

Table Table

Table 1

–

––

–

Pin Definitions

Pin DefinitionsPin Definitions

Pin Definitions

PinPin

Type

TypeType

Type

Signal Name

Signal NameSignal Name

Signal Name

Function

FunctionFunction

Function

1 NC No Connect

2 O TXD Transmitted data out of the transceiver

3 I RXD Data input to the transceiver

4 NC No Connect

5 GND GND Signal Ground

6 O Hop Frame HOP FRAME – Active Low when the transceiver is hopping.

7 O CTS Clear to Send – Active Low when the transceiver is ready to accept data for

transmission.

8 I RTS Request to Send – When enabled in EEPROM, active Low when the OEM Host is ready

to accept data from the transceiver. NOTE: Keeping RTS High for too long can cause

data loss.

9 NC No Connect

10 PWR VCC 5V ± 2%, ± 50mV ripple

11 PWR VCC 5V ± 2%, ±50 mV ripple

12 I/O 9600_BAUD/

Packet Frame

9600_BAUD – When pulled logic Low before applying power or resetting the

transceiver’s serial interface is forced to a 9600, 8, N, 1 rate. To exit, transceiver

must be reset or power-cycled with 9600_Baud logic High.

*Note:

*Note:*Note:

*Note: 9600_BAUD should only be used to recover the radio from an unknown baud

rate and should not be used during normal operation.

Packet Frame – When programmed in EEPROM, Packet Frame will transition logic Low

at the start of a received RF packet and transition logic High at the completion of the

packet.

13 O RSSI Received Signal Strength Indicator - An analog output giving a relative indication of

received signal strength while in Receive Mode.

14 I WR_ENA EEPROM Write Enable – When pulled logic Low, it allows the Host to write the on-board

EEPROM. Resetting the transceiver with this pin pulled Low may corrupt EEPROM

data.

15 I UP_RESET RESET – Controlled by the AC4424 for power-on reset if left unconnected. After a

Stable power-on (250ms) a 50us logic High pulse will reset the AC4424. Do not

power up the transceiver with this pin tied Low.

16 GND GND Signal Ground

17 I Command/Dat

When logic Low, transceiver interprets Host data as command data. When logic High,

transceiver interprets Host data as transmit data.

18 NC No Connect

/8/2007

8/20078/2007

8/2007

1111

19 NC No Connect

20 O IN_RANGE In Range – Active Low when a Client radio is in range of a Server on same Channel with the

same System ID.

I = Input to the transceiver O = Output from the transceiver

3.2

3.23.2

3.2

ELECTRICAL

LECTRICAL LECTRICAL

LECTRICAL S

SPECIFICATIONS

PECIFICATIONSPECIFICATIONS

PECIFICATIONS

Table

Table Table

Table 2

–

––

– DC Input Voltage Characteristics

DC Input Voltage Characteristics DC Input Voltage Characteristics

DC Input Voltage Characteristics

PinPin

Type

TypeType

Type

Name

NameName

Name

High Min.

High Min.High Min.

High Min.

High Max.

High Max.High Max.

High Max.

Low Min.

Low Min.Low Min.

Low Min.

Low Max.

Low Max.Low Max.

Low Max.

Unit

UnitUnit

Unit

3 I RXD 0.2Vcc+0.9 Vcc+0.5 -0.5 0.2Vcc-

0.1

8 I RTS 0.2Vcc+0.9 Vcc+0.5 -0.5 0.2Vcc-

0.1

12 I 9600_Baud 0.2Vcc+0.9 Vcc+0.5 -0.5 0.2Vcc-

0.1

14 I WR_ENA 0.7Vcc Vcc+1 -0.3 0.5 V

15 I UP_RESET 0.7Vcc Vcc+0.5 -0.5 0.2Vcc-

0.1

17 I Command/Data 0.2Vcc+0.9 Vcc+0.5 -0.5 0.2Vcc-

0.1

Table

Table Table

Table 3

–

––

– DC Output Voltage Characteristics

DC Output Voltage Characteristics DC Output Voltage Characteristics

DC Output Voltage Characteristics

PinPin

Type

TypeType

Type

Name

NameName

Name

High Min.

High Min.High Min.

High Min.

Low Max.

Low Max.Low Max.

Low Max.

Unit

UnitUnit

Unit

2 O TXD Vcc-0.7 @ -

30µA

0.4 @

1.6mA

6 O Hop Frame Vcc-0.7 @ -

30µA

0.4 @

1.6mA

7 O CTS Vcc-0.7 @ -

30µA

0.4 @

1.6mA

12 O Packet Frame Vcc-0.7 @ -

30µA

0.4 @

1.6mA

13 O RSSI See Figure 1 See Figure 1 V

20 O IN_RANGE Vcc-0.7 @ -

30µA

0.4 @

1.6mA

3.3

3.33.3

3.3

SYSTEM

YSTEM YSTEM

YSTEM T

TIMING

IMINGIMING

IMING

Care should be taken when selecting transceiver architecture as it can have serious effects

on data rates, latency timings, and Overall System Throughput. The importance of these

three characteristics will vary from system to system and should be a strong consideration

when designing the system.

/8/2007

8/20078/2007

8/2007

1212

3.3.1

3.3.13.3.1

3.3.1

Seri

SeriSeri

Serial Interface Data Rate

al Interface Data Rateal Interface Data Rate

al Interface Data Rate

The Serial Interface Data Rate is programmable by the Host. This is the rate the Host and

transceiver communicate over the serial bus. Possible values range from 110 bps to 288,000

bps. The only supported mode is asynchronous

The only supported mode is asynchronous The only supported mode is asynchronous

The only supported mode is asynchronous –

––

– 8

8 8

-b

bit, No Parity, 1 Start Bit, and 1 Stop Bit

it, No Parity, 1 Start Bit, and 1 Stop Bitit, No Parity, 1 Start Bit, and 1 Stop Bit

it, No Parity, 1 Start Bit, and 1 Stop Bit.

/8/2007

8/20078/2007

8/2007

1313

3.3.2

3.3.23.3.2

3.3.2

Timing Diagrams

Timing DiagramsTiming Diagrams

Timing Diagrams

Addressed Acknowledge Mode with Interface Timeout:

Addressed Acknowledge Mode with Interface Timeout:Addressed Acknowledge Mode with Interface Timeout:

Addressed Acknowledge Mode with Interface Timeout:

Addressed Acknowledge Mode with No Interface Timeout:

Addressed Acknowledge Mode with No Interface Timeout:Addressed Acknowledge Mode with No Interface Timeout:

Addressed Acknowledge Mode with No Interface Timeout:

Broadcast Acknowledge Mode with No Interface Timeout:

Broadcast Acknowledge Mode with No Interface Timeout:Broadcast Acknowledge Mode with No Interface Timeout:

Broadcast Acknowledge Mode with No Interface Timeout:

Local_RXD

Local_RF_TXD

Remote_RF_TXD

Remote_TXD

Hop_Fr a me

Packet Data

RF Pac ket

Rec eiv ed Da ta

Hop Time

Wait f or Hop

Hop Period

Local_RXD

Local_RF_TXD

Remote_RF_TXD

Remote_TXD

Hop_Fr a me

Packet Data

RF Pac ket

Rec eiv ed Da ta

RF Acknow ledge

Hop Time

Wait f or Hop

Hop Period

Local_RXD

Local_RF_TXD

Remote_RF_TXD

Remote_TXD

Hop_Fr a me

Packet Data

RF Pac ket

Receiv ed Data

RF Acknow ledge

Hop Time

Hop Period

Interface Timeout

Wait f or Hop

/8/2007

8/20078/2007

8/2007

1414

Broadcast Acknowledge M

Broadcast Acknowledge MBroadcast Acknowledge M

Broadcast Acknowledge Mode with Interface Timeout:

ode with Interface Timeout:ode with Interface Timeout:

ode with Interface Timeout:

Local_RXD

Local_RF_TXD

Remote_RF_TXD

Remote_TXD

Hop_Frame

Packet Data

RF Packet

Received Data

Hop Time

Hop Period

Interface Timeout

Wait for Hop

/8/2007

8/20078/2007

8/2007

1515

Table

Table Table

Table 4

–

––

– Timing Parameters

Timing Parameters Timing Parameters

Timing Parameters

3.3.3

3.3.33.3.3

3.3.3

Maximum Overall System Throughput

Maximum Overall System ThroughputMaximum Overall System Throughput

Maximum Overall System Throughput

When configured as shown in the table below, an AC4424 transceiver is capable

capable capable

capable of achieving

the listed throughput. However, in the presence of interference or at longer ranges, the

transceiver may not be able to meet these specified throughputs.

Table

Table Table

Table 5

–

––

– Maximum Overall System Throughputs

Maximum Overall System Throughputs Maximum Overall System Throughputs

Maximum Overall System Throughputs

RF Mode

RF ModeRF Mode

RF Mode

Interface Ba

Interface BaInterface Ba

Interface Baud

ud ud

Rate

RateRate

Rate

Duplex

DuplexDuplex

Duplex

Direction

DirectionDirection

Direction

Throughput

Throughput Throughput

Throughput

(bps)

(bps)(bps)

(bps)

Acknowledge 115,200 Half One way 80k

Acknowledge 115,200 Full Both ways 40k

4.4.

Configuring the AC4424

Configuring the AC4424Configuring the AC4424

Configuring the AC4424

4.1

4.14.1

4.1

EEPROM P

EEPROM PEEPROM P

EEPROM PARAMETERS

ARAMETERSARAMETERS

ARAMETERS

A Host can program various parameters that are stored in EEPROM and become active after a

power-on reset. Table 6

Table 6 Table 6

Table 6 -

- EEPROM Parameters

EEPROM Parameters EEPROM Parameters

EEPROM Parameters, gives the locations and descriptions of the

parameters that can be read or written by a Host. Factory default values are also shown.

Do Do

not write to any EEPROM addresses other than those listed below. Do not co

not write to any EEPROM addresses other than those listed below. Do not conot write to any EEPROM addresses other than those listed below. Do not co

not write to any EEPROM addresses other than those listed below. Do not copy a

py a py a

py a

transceiver’s EEPROM data to another transceiver. Doing so may cause the transceiver to

transceiver’s EEPROM data to another transceiver. Doing so may cause the transceiver to transceiver’s EEPROM data to another transceiver. Doing so may cause the transceiver to

transceiver’s EEPROM data to another transceiver. Doing so may cause the transceiver to

malfunction.

malfunction.malfunction.

malfunction.

Parameter

ParameterParameter

Parameter

Typical Time (ms)

Typical Time (ms)Typical Time (ms)

Typical Time (ms)

Hop Time 1

Hop Period 8

/8/2007

8/20078/2007

8/2007

1616

Table

Table Table

Table 6

–

––

– EEPROM Parameters

EEPROM Parameters EEPROM Parameters

EEPROM Parameters

Parameter

ParameterParameter

Parameter

EEPROM

EEPROM EEPROM

EEPROM

Address

AddressAddress

Address

Length

Len

th Len

Length

(Bytes

(Bytes(Bytes

(Bytes

)

))

)

Range

RangeRange

Range

Default

DefaultDefault

Default

Description

DescriptionDescription

Description

Product ID 00H 40 40 bytes - Product identifier string.

Includes revision information for

software and hardware.

Channel

Number

40H 1 00 – 27h 00h Refer to Table 10

Server/Client

Mode

41H 1 01 – 02h 02h 01h = Server

02h = Client

Baud Rate

Low

42H 1 00 – FFh 05h

Low Byte of the interface baud rate.

Baud Rate

High

43H 1 00 – FFh 00h

High Byte of the interface baud rate.

Control 0 45H 1 00010100

b (14h)

Settings are:

Bit 7 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 6 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 5 – Sync to Channel

0 = Don't Sync to Channel

1 = Sync to Channel

Bit 4 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 3 – Packet Frame

0 = Disable Packet Frame

1 = Use pin 12 as Packet Frame

Bit 2 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 1 – RF Delivery

0 = Addressed

1 = Broadcast

Bit 0 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Transmit

Retries

4CH 1 01 - FFh 10h Maximum number of times a packet is

sent out when using Addressed

packets.

Broadcast

Attempts

4DH 1 01 – FFh 04h Maximum number of times a packet is

sent out when using Broadcast

packets.

API Control 56H 1 01000011

b = 43h

Settings are:

Bit 7 – AeroComm Use

AeroComm Use AeroComm Use

AeroComm Use Only

OnlyOnly

Only

Bit 6 – RF Architecture

0 = Server-Client

1 = Peer-to-Peer

Bit 5 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 4 – Auto Destination

/8/2007

8/20078/2007

8/2007

1717

0 = Use Destination Address

1 = Automatically set Destination

to Server

Bit 3 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 2 – RTS Enable

0 = RTS Ignored

1 = Transceiver obeys RTS

Bit 1 – Duplex Mode

0 = Half Duplex

1 = Full Duplex

Bit 0 – Auto Config

0 = Use EEPROM values

1 = Auto Configure Values

Parameter

ParameterParameter

Parameter

EEPROM

EEPROM EEPROM

EEPROM

Address

AddressAddress

Address

Length

Len

th Len

Length

(Bytes

(Bytes(Bytes

(Bytes

)

))

)

Range

RangeRange

Range

Default

DefaultDefault

Default

Description

DescriptionDescription

Description

Transmit

Retries

4CH 1 01 - FFh 10h Maximum number of times a packet is

sent out when Addressed packets are

selected.

Broadcast

Attempts

4DH 1 01 – FFh 04h Maximum number of times a packet is

sent out when Broadcast packets are

selected.

API Control 56H 1 01000011

b = 43h

Settings are:

Bit 7 – AeroCo

AeroCoAeroCo

AeroComm Use Only

mm Use Onlymm Use Only

mm Use Only

Bit 6 – RF Architecture

0 = Server-Client

1 = Peer-to-Peer

Bit 5 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 4 – Auto Destination

0 = Use Destination Address

1 = Automatically set Destination

to Server

Bit 3 – AeroComm Use Only

AeroComm Use OnlyAeroComm Use Only

AeroComm Use Only

Bit 2 – RTS Enable

0 = RTS Ignored

1 = Transceiver obeys RTS

Bit 1 – Duplex Mode

0 = Half Duplex

1 = Full Duplex

Bit 0 – Auto Config

0 = Use EEPROM values

1 = Auto Configure Values

Interface

Timeout

58H 1 01 – FFh F0h Specifies a byte gap timeout, used in

conjunction with RF Packet Size to

determine when a packet coming over

the interface is complete (160 us per

/8/2007

8/20078/2007

8/2007

1818

increment).

Sync Channel 5AH 1 00 – 3Fh 01h Used to synchronize the hopping of

collocated systems to minimize

interference.

RF Packet Size 5BH 1 01 – 40h 40h Used in conjunction with Interface

Timeout; specifies the maximum size

of an RF packet.

CTS On 5CH 1 01 – FFh C0h CTS will be deasserted (High) when

the transmit buffer contains at least

this many characters.

CTS On

Hysteresis

5DH 1 01 – FFh 80h Once CTS has been deasserted, CTS

will be reasserted (Low) when the

transmit buffer is contains this many

or less characters.

Destination ID 70H 6 6 Bytes Specifies destination for RF packets

System ID 76H 1 00 – FFh 01h Similar to network password. Radios

must have the same system ID to

communicate with each other.

MAC ID 80H 6 6 Bytes Unique IEEE MAC Address

Parameter

ParameterParameter

Parameter

EEPROM

EEPROM EEPROM

EEPROM

Address

AddressAddress

Address

Length

Len

th Len

Length

(Bytes

(Bytes(Bytes

(Bytes

)

))

)

Range

RangeRange

Range

Default

DefaultDefault

Default

Description

DescriptionDescription

Description

Random

Backoff

C3h 1 00 - FFh 00h 00h = Disable Random Backoff

01h = Wait 1-2 packet times, then

retry

03h = Wait 1-4 packet times, then

retry

07h = Wait 1-8 packet times, then

retry

0Fh = Wait 1-16 packet times, then

retry

1Fh = Wait 1-32 packet times, then

retry

3Fh = Wait 1-64 packet times, then

retry

7Fh = Wait 1-128 packet times, then

retry

FFh = Wait 1-256 packet times, then

retry

/8/2007

8/20078/2007

8/2007

1919

4.2

4.24.2

4.2

CONFIGURING THE

ONFIGURING THE ONFIGURING THE

ONFIGURING THE AC4424

AC4424 AC4424

AC4424 1

1 Resetting the AC4424 at any time will exit Configuration or CC Command mode.

Send CC

Command

Send “Enter AT” Command

(Software Configuration)

Take Pin

17 High

Receive

Mode

Send CC

Commands?

Exit

Command

Mode?

Send another

Use AT

Commands?

Take Pin 17 Low

(Hardware Configuration)

Receive

Mode

In AT

Command

Mode?

Send

“Exit AT”

Command

/8/2007

8/20078/2007

8/2007

2020

4.3

4.34.3

4.3

COMMAND

OMMAND OMMAND

OMMAND R

REFERENCE

EFERENCEEFERENCE

EFERENCE

Command

CommandCommand

Command Command (All Bytes in Hex)

Command (All Bytes in Hex) Command (All Bytes in Hex)

Command (All Bytes in Hex) Return (All Bytes in Hex)

Return (All Bytes in Hex) Return (All Bytes in Hex)

Return (All Bytes in Hex)

AT Enter

Command

Mode

41h 54h 2Bh 2Bh 2Bh 0Dh CCh 43h 4Fh 4Dh

Exit AT

Command

Mode

CCh 41h 54h 4Fh 0Dh CCh 44h 41h 54h

Status

Request CCh 00h 00h - CCh Firmware

Version

00h: Server In Range

01h: Client In Range

02h: Server Out of Range

03h: Client Out of Range

Change

Channel with

Forced

Acquisition

CCh 02h New

Channel - CCh New

Channel - -

Server/Client CCh 03h

00h – Server in Normal Operation

01h – Client in Normal Operation

02h – Server in Acquisition Sync

03h – Client in Acquisition Sync

CCh Firmware

Version

00h – Server in Normal

Operation

01h – Client in Normal

Operation

02h – Server in

Acquisition Sync

03h – Client in Acquisition

Sync

Channel CCh 05h New Sync

Channel - CCh

New Sync

Channel - -

Power-Down CCh 06h - - CCh Channel - -

Power-Down

Wake-Up CCh 07h - - CCh Channel - -

Broadcast

Mode CCh 08h 00h: Addressed

01h: Broadcast CCh 00h or 01h - -

Write

Destination

Address

CCh 10h

Byte 4 of

destination’s

MAC

Byte 5 of

destination’s

MAC

Byte 6 of

destination’s

MAC

CCh

Byte 4 of

destination’s

MAC

Byte 5 of

destination’s

MAC

Byte 6 of

destination’s

MAC

Read

Destination

Address

CCh 11h - - CCh

Byte 4 of

destination’s

MAC

Byte 5 of

destination’s

MAC

Byte 6 of

destination’s

MAC

EEPROM

Byte Read CCh C0h Start

Address

Length

(01h – 80h) CCh Start

Address Length Data at

Addresses

EEPROM

Byte Write CCh C1h Address Length

(01h)

Data to be

Written Address Length

(01h) Last byte of Data Written

Soft Reset CCh FFh - - - - - -

/8/2007

8/20078/2007

8/2007

2121

4.4

4.44.4

4.4

AC4424 AT C

AC4424 AT CAC4424 AT C

AC4424 AT COMMANDS

OMMANDSOMMANDS

OMMANDS

The AT Command mode implemented in the AC4424 creates a virtual version of the

Command/Data pin. The “Enter AT Command Mode” Command asserts this virtual pin Low

(to signify Command Mode) and the “Exit AT Command Mode” Command asserts this virtual

pin High (to signify Data). Once this pin has been asserted Low, all On-the-Fly CC Commands

documented in the manual are supported.

When in AT Command Mode, the user cannot send or receive RF packets. However, an

ambiguity of approximately 10ms exists where, if the “Enter AT Command Mode” command

has been sent to the transceiver at the same time an RF packet is being received, the RF

packet could be sent to the OEM Host before the “Enter AT Command Mode” command

response is sent to the OEM Host.

NOTE: The RF packet size must be set to a minimum of 6 bytes in order to enter Command

NOTE: The RF packet size must be set to a minimum of 6 bytes in order to enter Command NOTE: The RF packet size must be set to a minimum of 6 bytes in order to enter Command

NOTE: The RF packet size must be set to a minimum of 6 bytes in order to enter Command

mode us

mode usmode us

mode using the Enter AT Command mode command.

ing the Enter AT Command mode command.ing the Enter AT Command mode command.

ing the Enter AT Command mode command.

4.4.1

4.4.14.4.1

4.4.1

Enter AT Command Mode

Enter AT Command ModeEnter AT Command Mode

Enter AT Command Mode

Prior to sending the “Enter AT Command Mode” command to the transceiver, the OEM Host

must ensure that the RF transmit buffer of the transceiver is empty (if the buffer is not

empty, the ”Enter AT Command Mode” command will be interpreted as packet data and will

be transmitted out over the RF). This can be accomplished by waiting up to one second

between the last transmit packet and the AT Command. The OEM Host must also ensure

The OEM Host must also ensure The OEM Host must also ensure

The OEM Host must also ensure

that the RF Packe

that the RF Packethat the RF Packe

that the RF Packet Size for the transceiver is set to a minimum of six.

t Size for the transceiver is set to a minimum of six.t Size for the transceiver is set to a minimum of six.

t Size for the transceiver is set to a minimum of six. The Enter AT

Command mode command is as follows:

OEM Host Command:

OEM Host Command:OEM Host Command:

OEM Host Command:

41h 54h 2Bh 2Bh 2Bh 0Dh

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

CCh 43h 4Fh 4Dh

4.4.2

4.4.24.4.2

4.4.2

Exit AT Command Mode

Exit AT Command ModeExit AT Command Mode

Exit AT Command Mode

To exit AT Command Mode, the OEM Host should send the following command to the

transceiver:

OEM Host Command:

OEM Host Command:OEM Host Command:

OEM Host Command:

CCh 41h 54h 4Fh 0Dh

/8/2007

8/20078/2007

8/2007

2222

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

CCh 44h 41h 54h

4.5

4.54.5

4.5

N-

-THE

THETHE

THE-

-F

FLY

LY LY

LY C

CONTROL

ONTROL ONTROL

ONTROL C

COMMANDS

OMMANDS OMMANDS

OMMANDS (CC C

(CC C(CC C

(CC COMMAND

OMMAND OMMAND

OMMAND M

MODE

ODEODE

ODE)

))

)

The AC4424 transceiver contains static memory that holds many of the parameters that

control the transceiver operation. Using the “CC” command set allows many of these

parameters to be changed during system operation. Because the memory these commands

affect is static, when the transceiver is reset, these parameters will revert back to the

settings stored in the EEPROM.

While in CC Command mode using pin 17 (Command/Data), the RF interface of the

transceiver is still active. Therefore, it can receive packets from remote transceivers while in

CC Command mode and forward these to the OEM Host. While in CC Command mode using

AT Commands, the RF interface of the transceiver is active, but packets sent from other

transceivers will not be received. The transceiver uses Interface Timeout/RF Packet Size

Interface Timeout/RF Packet SizeInterface Timeout/RF Packet Size

Interface Timeout/RF Packet Size to

determine when a CC Command is complete. Therefore, there should be no delay between

each character as it is sent from the OEM Host to the transceiver or the transceiver will not

recognize the command. If the OEM Host has sent a CC Command to the transceiver and an

RF packet is received by the transceiver, the transceiver will send the CC Command response

to the OEM Host before sending the packet. However, if an RF packet is received before the

Interface Timeout expires on a CC Command, the transceiver will send the packet to the OEM

Host before sending the CC Command response.

When an invalid command is sent, the radio scans the command to see if it has a valid

command followed by bytes not associated with the command, in which case the radio

discards the invalid bytes and accepts the command. In all other cases, the radio returns the

first byte of the invalid command back to the user and discards the rest.

The EEPROM parameters and a Command Reference are available in Section 4, Configuring

Section 4, Configuring Section 4, Configuring

Section 4, Configuring

the AC4424

the AC4424the AC4424

the AC4424, of this manual.

4.5.1

4.5.14.5.1

4.5.1

Status Request

Status RequestStatus Request

Status Request

The Host issues this command to request the status of the transceiver.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 00h

Byte 3 = 00h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Firmware version number

Byte 3 = Data1

/8/2007

8/20078/2007

8/2007

2323

Where:

Where:Where:

Where:

Data1 =

00 for Server in Normal Operation

01 for Client in Normal Operation

02 for Server in Acquisition Sync

03 for Client in Acquisition Sync

4.5.2

4.5.24.5.2

4.5.2

Change Channel with Forced Acquisition Sync

Change Channel with Forced Acquisition SyncChange Channel with Forced Acquisition Sync

Change Channel with Forced Acquisition Sync

The Host issues this command to change the channel of the transceiver and force the

transceiver to actively begin synchronization.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 02h

Byte 3 = RF Channel Number (Hexadecimal)

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = RF Channel Number (Hexadecimal)

4.5.3

4.5.34.5.3

4.5.3

Server/Client

Server/ClientServer/Client

Server/Client

The Host issues this command to change the mode (Server or Client) of the transceiver and

can force the transceiver to actively begin synchronization.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 03h

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 =

00 for Server in Normal Operation

01 for Client in Normal Operation

02 for Server in Acquisition Sync

03 for Client in Acquisition Sync

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Firmware Version Number

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = Data1 from Host Command

/8/2007

8/20078/2007

8/2007

2424

4.5.4

4.5.44.5.4

4.5.4

Sync Channel

Sync ChannelSync Channel

Sync Channel

The Sync Channel command can be sent to a Server that already has Sync-to-Channel

enabled. This will change the Server’s Sync Channel setting.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 05h

Byte 3 = New Channel to Synchronize to

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = New Channel to Synchronize to

/8/2007

8/20078/2007

8/2007

2525

4.5.5

4.5.54.5.5

4.5.5

Power

PowerPower

Power-

-Down

DownDown

Down

After the Host issues the power-down command to the transceiver, the transceiver will de-

assert the In_Range line after entering power-down. A Client transceiver in power-down will

remain in sync with a Server for a minimum of 2 minutes. To maintain synchronization with

the Server, this Client transceiver should re-sync to the Server at least once every 2 minutes.

This re-sync is accomplished by issuing the Power

PowerPower

Power-

-Down Wake

Down WakeDown Wake

Down Wake-

-Up Command

Up CommandUp Command

Up Command and waiting for

the In Range line to go active. Once this occurs, the Client transceiver is in sync with the

Server and can be put back into power-down.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 06h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = RF Channel Number (Hexadecimal)

4.5.6

4.5.64.5.6

4.5.6

Power

PowerPower

Power-

-Down Wake

Down WakeDown Wake

Down Wake-

-Up

UpUp

The Power-Down Wake-Up Command is issued by the Host to bring the transceiver out of

power-down mode.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 07h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = RF Channel Number (Hexadecimal)

4.5.7

4.5.74.5.7

4.5.7

Broadcast Mode

Broadcast ModeBroadcast Mode

Broadcast Mode

The Host issues this command to change the transceiver operation between Addressed Mod

Addressed ModAddressed Mod

Addressed Mode

and Broadcast Mode

Broadcast ModeBroadcast Mode

Broadcast Mode. If addressed mode is selected the transceiver will send all packets to

the radio designated by the Destination Address

Destination AddressDestination Address

Destination Address programmed in the transceiver.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 08h

Byte 3 = 00 for addressed mode, 01 for broadcast mode

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = 00 for addressed mode, 01 for broadcast mode

/8/2007

8/20078/2007

8/2007

2626

4.5.8

4.5.84.5.8

4.5.8

Write Destination Address

Write Destination AddressWrite Destination Address

Write Destination Address

The Host issues this command to the transceiver to change the Destination Address. This is

a very powerful

very powerful very powerful

very powerful command that provides the OEM Host with a means for ad-hoc networking.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 10h

Bytes 3 – 5 = 00 – FFh corresponding to the three LSB’s of the destination MAC

Address

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Bytes 2 – 4= 00 – FFh corresponding to the three LSB’s of the destination MAC

Address

4.5.9

4.5.94.5.9

4.5.9

Read Destination Address

Read Destination AddressRead Destination Address

Read Destination Address

The Host issues this command to the transceiver to read the Destination Address. This is a

veve

very powerful

ry powerful ry powerful

ry powerful command that provides the OEM Host with a means for ad-hoc networking.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Only the three Least Significant Bytes of the MAC Address are used for packet delivery.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 11h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Bytes 2 – 4= 00 – FFh corresponding to the three LSB’s of the destination MAC

Address

4.5.10

4.5.104.5.10

4.5.10

EEPROM Byte Read

EEPROM Byte ReadEEPROM Byte Read

EEPROM Byte Read

Upon receiving this command, a transceiver will respond with the desired data from the

address requested by the OEM Host.

OEM Host Command:

OEM Host Command:OEM Host Command:

OEM Host Command:

Byte 1 = CCh

Byte 2 = C0h

Byte 3 = Start Address

Byte 4 = Length (01 - 80h)

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

/8/2007

8/20078/2007

8/2007

2727

Byte 1 = CCh

Byte 2 = Start Address

Byte 3 = Length

Byte 4…n = Data at requested addresses

4.5.11

4.5.114.5.11

4.5.11

EEPROM Byte Write

EEPROM Byte WriteEEPROM Byte Write

EEPROM Byte Write

Upon receiving this command, a transceiver will write the data byte to the address

specified but will not echo it back to the OEM Host until the EEPROM write cycle is

complete. The write can take as long as 10ms to complete. Following the write

cycle, a transceiver will transmit the data byte to the OEM Host. Multiple byte

EEPROM writes are not allowed. Caution: The maximum number of write cycles that

Caution: The maximum number of write cycles that Caution: The maximum number of write cycles that

Caution: The maximum number of write cycles that

can be performed is 100,000.

can be performed is 100,000.can be performed is 100,000.

can be performed is 100,000.

OEM Host Command:

OEM Host Command:OEM Host Command:

OEM Host Command:

Byte 1 = CCh

Byte 2 = C1h

Byte 3 = Address

Byte 4 = Length (01h)

Byte 5…n = Data to store at Address

Transceiver Respo

Transceiver RespoTransceiver Respo

Transceiver Response:

nse:nse:

nse:

Byte 1 = Address

Byte 2 = Length (01h)

Byte 3 = Last byte of data byte written by this command

4.5.12

4.5.124.5.12

4.5.12

Reset

ResetReset

Reset

The OEM Host issues this command to perform a soft reset of the transceiver (same effect

as using the Reset pin). Any transceiver settings modified by CC Commands (excluding

EEPROM writes) will be overwritten by values stored in the EEPROM.

OEM Host Command:

OEM Host Command:OEM Host Command:

OEM Host Command:

Byte 1 = CCh

Byte 2 = FFh

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = FFh

/8/2007

8/20078/2007

8/2007

2828

5.5.

Theory of Operation

Theory of OperationTheory of Operation

Theory of Operation

5.1

5.15.1

5.1

HARDWARE INTERFACE

ARDWARE INTERFACEARDWARE INTERFACE

ARDWARE INTERFACE

Below is a description of all hardware pins used to control the AC4424.

5.1.1

5.1.15.1.1

5.1.1

TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3

TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3 TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3

TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3

respectively)

respectively) respectively)

respectively)

The AC4424 accepts 5V TTL level asynchronous serial data in the RXD pin and interprets

that data as either Command Data or Transmit Data. Data is sent from the transceiver to

the OEM Host via the TXD pin. The data must be of the format 8-N-1 (8 data bits, No Parity

bits, One stop bit).

5.1.2

5.1.25.1.2

5.1.2

Hop Frame (pin 6)

Hop Frame (pin 6)Hop Frame (pin 6)

Hop Frame (pin 6)

The AC4424 is a frequency hopping spread spectrum radio. Frequency hopping allows the

system to hop around interference in order to provide a better wireless link. Hop Frame

transitions logic Low at the start of a hop and transitions logic High at the completion of a

hop. The OEM Host is not required to monitor Hop Frame.

5.1.3

5.1.35.1.3

5.1.3

CTS Handshaking (pi

CTS Handshaking (piCTS Handshaking (pi

CTS Handshaking (pin 7)

n 7)n 7)

n 7)

The AC4424 has an interface buffer size of 256 bytes. If the buffer fills up and more bytes

are sent to the transceiver before the buffer can be emptied, data corruption will occur. The

transceiver prevents this corruption by asserting CTS High as the buffer fills up and taking

CTS Low as the buffer is emptied. CTS On

CTS OnCTS On

CTS On in conjunction with CTS On Hysteresis

CTS On HysteresisCTS On Hysteresis

CTS On Hysteresis control the

operation of CTS. CTS On specifies the amount of bytes that must be in the buffer for CTS

to be disabled (High). Even while CTS is disabled, the OEM Host can still send data to the

transceiver, but it should do so carefully. Once CTS is disabled, it will remain disabled until

the buffer is reduced to the size specified by CTS On Hysteresis. The following equation

should always be used for setting CTS On, CTS On Hysteresis and RF Packet Size

RF Packet SizeRF Packet Size

RF Packet Size:

CTS On

CTS On CTS On

CTS On –

––

– CTS On Hysteresis = RF Packet Size

CTS On Hysteresis = RF Packet Size CTS On Hysteresis = RF Packet Size

CTS On Hysteresis = RF Packet Size

5.1.4

5.1.45.1.4

5.1.4

RTS Handshaking (pin 8)

RTS Handshaking (pin 8)RTS Handshaking (pin 8)

RTS Handshaking (pin 8)

With RTS Mode

RTS ModeRTS Mode

RTS Mode disabled, the transceiver will send any received packet to the OEM Host as

soon as the packet is received. However, some OEM Hosts are not able to accept data from

the transceiver all of the time. With RTS Mode Enabled, the OEM Host can keep the

transceiver from sending it a packet by disabling RTS (logic High). Once RTS is enabled (logic

Low), the transceiver can send packets to the OEM Host as they are received. Note:

Note: Note:

Note:

/8/2007

8/20078/2007

8/2007

2929

Leaving RTS disabled for too long can cause data loss once the transceiver’s receive buffer

Leaving RTS disabled for too long can cause data loss once the transceiver’s receive buffer Leaving RTS disabled for too long can cause data loss once the transceiver’s receive buffer

Leaving RTS disabled for too long can cause data loss once the transceiver’s receive buffer

fills up.

fills up.fills up.

fills up.

5.1.5

5.1.55.1.5

5.1.5

9600 Baud/Packet Frame (pin 12)

9600 Baud/Packet Frame (pin 12)9600 Baud/Packet Frame (pin 12)

9600 Baud/Packet Frame (pin 12)

9600_BAUD

9600_BAUD9600_BAUD

9600_BAUD – When pulled logic Low before applying power or resetting, the transceiver’s

serial interface is forced to a 9600, 8-N-1 (8 data bits, No parity, 1 stop bit) rate. To exit,

transceiver must be reset or power-cycled with 9600_Baud logic High.

9600_BAUD should only be used to recover the radio from an unknown baud rate and

should not be used during normal operation. When 9600_BAUD is pulled logic Low,

Broadcast Mode is disabled.

Packet Frame

Packet FramePacket Frame

Packet Frame – When enabled in EEPROM, Packet Frame will transition logic Low at the start

of a received RF packet and transition logic High at the completion of the packet.

5.1.6

5.1.65.1.6

5.1.6

RSSI (pin 13)

RSSI (pin 13)RSSI (pin 13)

RSSI (pin 13)

Received Signal Strength Indicator is used by the Host as an indication of instantaneous signal

strength at the receiver. The Host must calibrate RSSI without a RF signal being presented to

the receiver. Calibration is accomplished by following the steps listed below to find a

minimum and maximum voltage value.

1) Power up only one Client (no Server) transceiver in the coverage area.

2) Measure the RSSI signal to obtain the minimum value with no other signal

present.

3) Power up a Server. Make sure the two transceivers are in close proximity and

measure the Client’s peak RSSI once the Client reports In Range to obtain a

maximum value at full signal strength.

Figure 1 shows approximate RSSI performance. There are two versions of receivers used by

the AC4424. As of January of 2003 forward, only the new revision receiver will be shipped.

The RSSI pin of the former revision requires the Host to provide a 27k pull-down to ground.

A table of board revision history is provided below. No R

No RNo R

No RSSI pull

SSI pullSSI pull

SSI pull-

-down should be used with

down should be used with down should be used with

down should be used with

the new revision.

the new revision. the new revision.

the new revision.

/8/2007

8/20078/2007

8/2007

3030

Figure

Figure Figure

Figure 1

- RSSI Voltage vs. Received Signal Strength

RSSI Voltage vs. Received Signal Strength RSSI Voltage vs. Received Signal Strength

RSSI Voltage vs. Received Signal Strength

Table

Table Table

Table 7

–

––

– RSSI Board Rev History

RSSI Board Rev History RSSI Board Rev History

RSSI Board Rev History

Radio Type

Radio TypeRadio Type

Radio Type

Old RSSI Board

Old RSSI Board Old RSSI Board

Old RSSI Board

Number

NumberNumber

Number

New RSSI Board

New RSSI Board New RSSI Board

New RSSI Board

Number

NumberNumber

Number

AC4424-10 0050-00025 0050-00036

AC4424-10A N/A 0050-00029

AC4424-100 N/A 0050-00037 or

0050-00075

AC4424-200 0050-00030 0050-00045

5.1.7

5.1.75.1.7

5.1.7

Wr_ENA(EEPROM Write Enable) (pin 14)

Wr_ENA(EEPROM Write Enable) (pin 14)Wr_ENA(EEPROM Write Enable) (pin 14)

Wr_ENA(EEPROM Write Enable) (pin 14)

Wr_ENA is a direct connection to the Write Enable line on the EEPROM. When logic Low, the

EEPROM’s contents may be changed. When logic High, the EEPROM is protected from

accidental and intentional modification. It is recommended that this line only be Low when an

EEPROM write is desired to prevent unintentional corruption of the EEPROM.

-20

-25

-30

-35

-40

-45

-50

-55

-60

-65

-70

-75

-80

-85

-90

-95

Input Power (dBm)

Voltage (V)

New Rev is ion Old Revision

/8/2007

8/20078/2007

8/2007

3131

5.1.8

5.1.85.1.8

5.1.8

UP_RESE

UP_RESEUP_RESE

UP_RESET (pin 15)

T (pin 15)T (pin 15)

T (pin 15)

UP_RESET provides a direct connection to the reset pin on the AC4424 microprocessor. To

guarantee a valid power-up reset, this pin should never be tied Low on power-up. For a valid

power-on reset, reset must be High for a minimum of 50us.

5.1.9

5.1.95.1.9

5.1.9

Comm

CommComm

Command/Data (pin 17)

and/Data (pin 17)and/Data (pin 17)

and/Data (pin 17)

When logic High, transceiver interprets Host data as transmit data to be sent to other

transceivers and their Hosts. When logic Low, transceiver interprets Host data as command

data (see Section 4, Configuring the AC4424)

(see Section 4, Configuring the AC4424)(see Section 4, Configuring the AC4424)

(see Section 4, Configuring the AC4424).

5.1.10

5.1.105.1.10

5.1.10

In Range (pin 2

In Range (pin 2In Range (pin 2

In Range (pin 20)

0)0)

The IN_RANGE pin at the connector will be driven logic Low when a Client is in range of a

Server on the same RF Channel

RF ChannelRF Channel

RF Channel and System ID

System IDSystem ID

System ID. If a Client cannot hear a Server for 5s, it will

drive the IN_RANGE pin logic High and enter a search mode looking for a Server. As soon as

it detects a Server, the IN_RANGE pin will be driven logic Low. A Server Host can determine

which Clients are in range by the Server’s Host software polling a Client’s Host.

/8/2007

8/20078/2007

8/2007

3232

5.2

5.25.2

5.2

SOFTWARE

OFTWARE OFTWARE

OFTWARE P

PARAMETERS

ARAMETERSARAMETERS

ARAMETERS

Below is a description of all software parameters used to control the AC4424.

5.2.1

5.2.15.2.1

5.2.1

RF Architecture (Server

RF Architecture (ServerRF Architecture (Server

RF Architecture (Server-

-Client/Peer

Client/PeerClient/Peer

Client/Peer-

-to

toto

to-

-Peer)

Peer)Peer)

Peer)

The Server controls the system timing by sending out regular beacons (transparent to the

transceiver Host), which contain system timing information. This timing information

synchronizes the Client radios to the Server.

Each network should consist of only one Server. There should never be two Servers on the

same RF Channel Number

RF Channel NumberRF Channel Number

RF Channel Number in the same coverage area, as the interference between the two

Servers will severely hinder RF communications.

In Server-Client architecture, the Server communicates with the Clients and the Clients only

onlyonly

only

communicate with the Server. Enabling Peer

PeerPeer

Peer-

-to

toto

to-

-Peer Mode

Peer ModePeer Mode

Peer Mode will allow all radios on the network

to communicate with each other. Note: All transc

Note: All transcNote: All transc

Note: All transceivers on the same network must have the

eivers on the same network must have the eivers on the same network must have the

eivers on the same network must have the

same setting for Peer

same setting for Peersame setting for Peer

same setting for Peer-

-to

toto

to-

-Peer and there must still be one, and only one, Server present in a

Peer and there must still be one, and only one, Server present in a Peer and there must still be one, and only one, Server present in a

Peer and there must still be one, and only one, Server present in a

Peer

PeerPeer

Peer-

-to

toto

to-

-Peer network.

Peer network.Peer network.

Peer network.

5.2.2

5.2.25.2.2

5.2.2

RF Mode

RF ModeRF Mode

RF Mode

Acknowledge Mode

Acknowledge ModeAcknowledge Mode

Acknowledge Mode

In Addressed Acknowledge Mode, the RF packet is sent out to the receiver designated by the

Destination Address

Destination AddressDestination Address

Destination Address. Transmit Retries

Transmit RetriesTransmit Retries

Transmit Retries are used to increase the odds of successful delivery to

the intended receiver. Transparent to the OEM Host, the sending transceiver will send the RF

packet to the intended receiver. If the receiver receives the packet free of errors, it will tell

the sender. If the sender does not receive this acknowledge, it will assume the packet was

never received and retry the packet. This will go on until the packet is successfully received

or the transmitter exhausts all of its retries. The received packet will only be sent to the OEM

Host if and when it is received free of errors.

In Broadcast Acknowledge Mode, the RF packet is broadcast out to all eligible receivers on

the network. In order to increase the odds of successful delivery, Broadcast Attempts

Broadcast AttemptsBroadcast Attempts

Broadcast Attempts are

used to increase the odds of successful delivery to the intended receiver(s). Transparent to

the OEM Host, the sending transceiver will send the RF packet to the intended receiver. If the

receiver detects a packet error, it will throw out the packet. This will go on until the packet is

successfully received or the transmitter exhausts all of its attempts. Once the receiver

successfully receives the packet it will send the packet to the OEM Host. It will throw out any

duplicates caused by further Broadcast Attempts. The received packet will only be sent to

the OEM Host if it is received free of errors.

/8/2007

8/20078/2007

8/2007

3333

5.2.3

5.2.35.2.3

5.2.3

Random Back Off

Random Back OffRandom Back Off

Random Back Off

Random Back Off Random Back Off

Random Back Off – If multiple AC4424 transceivers try to send packets out over the RF at

the exact same time, the packets will collide and will not be received by the intended

receiver. In fact, if after a collision occurs, both transceivers retry at the same time, the retry

will also fail. To avoid further collisions, a transceiver can be programmed to wait a random

number of packet times (hops) before resending its data. The amount of randomness is

controlled by this parameter and this feature is not valid in broadcast mode. Keep in mind

that selecting a larger value for Random Back Off will increase the overall latency of the

AC4424. The latency calculation becomes:

Worst Case Latency = 8ms Hop * # of retries * Maximum Random Value

[multiply by 16ms if using Full Duplex mode]

Latency is a very important consideration when using a wireless device. The AC4424 has a

256 byte interface buffer. If, due to latency, the radio cannot send the data out over the RF

as fast as data is coming into the radio over the serial interface, the buffer will eventually fill

up. If data continues coming into the radio once the buffer is full, the buffer will overflow and

the new incoming data will be lost. It is strongly recommended that the radio host monitor

the CTS pin to avoid this situation. The transceiver asserts this pin high as the buffer is filling

to signal the OEM Host to stop sending data. The transceiver will take CTS Low once the

buffer becomes less full.

Random Backoff Settings:

• 00h – Wait 1 packet time, then retry (Random Back Off is disabled)

• 01h – Wait 1 – 2 packet times, then retry

• 03h – Wait 1 – 4 packet times, then retry

• 07h – Wait 1 – 8 packet times, then retry

• 0Fh – Wait 1 – 16 packet times, then retry

• 1Fh – Wait 1 – 32 packet times, then retry

• 3Fh – Wait 1 – 64 packet times, then retry

• 7Fh – Wait 1 – 128 packet times, then retry

• FFh – Wait 1 – 256 packet times, then retry

5.2.5

5.2.55.2.5

5.2.55.2.4

5.2.45.2.4

5.2.4

Duplex Mode

Duplex ModeDuplex Mode

Duplex Mode

In Half Duplex mode, the AC4424 will send a packet out over the RF when it can. This can

cause packets sent at the same time by a Server and a Client to collide with each other over

the RF. To prevent this, Full Duplex Mode can be enabled. This mode restricts Clients to

transmitting on odd numbered frequency “bins” and the Server to transmitting on even

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

/8/2007

8/20078/2007

8/2007

3434

frequency bins. Though the RF hardware is still technically half duplex, it makes the radio

seem full duplex. This can cause overall throughputs to be cut in half. Note: All transceivers

Note: All transceivers Note: All transceivers

Note: All transceivers

on the same network must have the same setting for Full Duplex.

on the same network must have the same setting for Full Duplex. on the same network must have the same setting for Full Duplex.

on the same network must have the same setting for Full Duplex.

5.2.6

5.2.65.2.6

5.2.65.2.5

5.2.55.2.5

5.2.5

Interface Timeout/RF Packet Size

Interface Timeout/RF Packet SizeInterface Timeout/RF Packet Size

Interface Timeout/RF Packet Size

Interface timeout, in conjunction with RF Packet Size

RF Packet SizeRF Packet Size

RF Packet Size, determines when a buffer of data will

be sent out over the RF as a complete RF packet based on whichever condition occurs first.

Interface Timeout

Interface TimeoutInterface Timeout

Interface Timeout – Interface Timeout specifies a maximum byte gap in between consecutive

bytes. When that byte gap is exceeded, the bytes in the transmit buffer are sent out over

the RF as a complete packet. Interface timeout is adjustable in 160uS decrements. The

actual timeout created by Interface Timeout is equal to the 2's complement of Interface

Timeout times 160uS. The default value for Interface Timeout is F0H or 2.56ms.

RF Packet Size

RF Packet Size RF Packet Size

RF Packet Size – When the amount of bytes in the transceiver transmit buffer equals RF

Packet Size, those bytes are sent out as a complete RF packet.

5.2.7

5.2.75.2.7

5.2.75.2.6

5.2.65.2.6

5.2.6

Serial Interface Baud Rate

Serial Interface Baud RateSerial Interface Baud Rate

Serial Interface Baud Rate

This two-byte value determines the baud rate used for communicating over the serial

interface to a transceiver. Table 9

Table 9 Table 9

Table 9 -

- Baud Rate

Baud Rate Baud Rate

Baud Rate lists values for some common baud rates.

Baud rates below 110 baud are not supported. For a baud rate to be valid, the calculated

baud rate must be within ±3% of the OEM Host baud rate. If the 9600_BAUD pin (Pin 12) is

If the 9600_BAUD pin (Pin 12) is If the 9600_BAUD pin (Pin 12) is

If the 9600_BAUD pin (Pin 12) is

pulled logic Low at reset, the baud rate will be forced to 9,600

pulled logic Low at reset, the baud rate will be forced to 9,600pulled logic Low at reset, the baud rate will be forced to 9,600

pulled logic Low at reset, the baud rate will be forced to 9,600.

. .

. For Baud Rate values other

than those shown in Table 9

Table 9 Table 9

Table 9 -

- Baud Rate

Baud Rate Baud Rate

Baud Rate, the following equation can be used:

BAUD = (18.432E+06/(32*d

BAUD = (18.432E+06/(32*dBAUD = (18.432E+06/(32*d

BAUD = (18.432E+06/(32*desired baud rate))

esired baud rate))esired baud rate))

esired baud rate))

BaudH= High 8 bits of BAUD (base16)

BaudH= High 8 bits of BAUD (base16)BaudH= High 8 bits of BAUD (base16)

BaudH= High 8 bits of BAUD (base16)

BaudL = Low 8 bits of BAUD (base16)

BaudL = Low 8 bits of BAUD (base16)BaudL = Low 8 bits of BAUD (base16)

BaudL = Low 8 bits of BAUD (base16)

Table

Table Table

Table 8

–

––

– Baud Rate

Baud Rate Baud Rate

Baud Rate

Baud

Baud Baud

Baud

Rate

RateRate

Rate

BaudL

BaudL BaudL

BaudL

(42h)

(42h)(42h)

(42h)

BaudH

BaudH BaudH

BaudH

(43h)

(43h)(43h)

(43h)

Minimum Interface

Minimum Interface Minimum Interface

Minimum Interface

Timeout (58h)

Timeout (58h)Timeout (58h)

Timeout (58h)

288,00

02h 00h FFh

192,00

03h 00h FFh

115,20

05h 00h FEh

57,600 0Ah 00h FDh

38,400 0Fh 00h FCh

28,800 14h 00h FBh

19,200 1Eh 00h F9h

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

/8/2007

8/20078/2007

8/2007

3535

14,400 28h 00h F7h

9,600 3Ch 00h F2h

4800 78h 00h E5h

2400 F0h 00h CBh

1200 E0h 01h 97h

300 80h 07h 01h

110 74h 14h 01h

5.2.8

5.2.85.2.8

5.2.85.2.7

5.2.75.2.7

5.2.7

Network Topology

Network TopologyNetwork Topology

Network Topology

RF Channel Number

RF Channel NumberRF Channel Number

RF Channel Number – RF Channel Number provides a physical separation between co-located

networks. The AC4424 is a spread spectrum frequency hopping radio with a fixed hopping

sequence. Without synchronizing the different networks to each other, different channel

numbers could possibly interfere with each other and create “cross-talk.” To avoid cross-talk

interference, co-located networks should use Sync

SyncSync

Sync-

-to

toto

to-

-Channel

ChannelChannel

Channel. A Server radio with Sync-to-

Channel enabled will synchronize its frequency hop timing to a system located on the RF

Channel specified by Sync Channel

Sync ChannelSync Channel

Sync Channel. The only requirement is that Sync Channel be numerically

less than RF Channel. Therefore, every co-located network will be synchronizing to the

network with the lowest RF Channel. Three Channel sets are provided for the AC4424 (refer

to Table 10 below). Co

CoCo

Co-

-located networks must use the same Cha

located networks must use the same Chalocated networks must use the same Cha

located networks must use the same Channel Set.

nnel Set.nnel Set.

nnel Set.

Table

Table Table

Table 9

–

––

– US and International RF Channel Number Settings

US and International RF Channel Number Settings US and International RF Channel Number Settings

US and International RF Channel Number Settings

Channel

Set

RF Channel Number

Range (40h)

Frequency Range Countries

0 00h – 0Fh 2402 –

2478MHz 10mW, 200mW: US,Canada

3 00h – 13h 2406 –

2435MHz

100mW, 9AJ:

Europe,France,US,Canada

4 14h – 27h 2444 –

2472MHz

100mW, 9AJ:

Europe,US,Canada

Note:

Note: Note:

Note: The AC4424-100 & AC4424-9AJ are CE approved for use in Europe. The AC4424-10

and AC4424-200 are not CE approved and cannot be used in Europe.

System ID

System IDSystem ID

System ID – System ID is similar to a password character or network number and makes

network eavesdropping more difficult. A receiving radio will not go in range of or

communicate with another radio on a different System ID.

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

/8/2007

8/20078/2007

8/2007

3636

5.2.9

5.2.95.2.9

5.2.95.2.8

5.2.85.2.8

5.2.8

Auto Config

Auto ConfigAuto Config

Auto Config

The AC4424 has several variables that control its RF performance and vary by RF Mode

RF ModeRF Mode

RF Mode and

RF Architecture

RF ArchitectureRF Architecture

RF Architecture. Enabling Auto Config will bypass the value for these variables stored in

EEPROM and use predetermined values for the given Interface Baud Rate. Auto Config has

Auto Config has Auto Config has

Auto Config has

been optimized for 115,200 baud Acknowledge Mode and all lower baud rates. It should only

been optimized for 115,200 baud Acknowledge Mode and all lower baud rates. It should only been optimized for 115,200 baud Acknowledge Mode and all lower baud rates. It should only

been optimized for 115,200 baud Acknowledge Mode and all lower baud rates. It should only

be disabled with recommendation from AeroComm.

be disabled with recommendation from AeroComm.be disabled with recommendation from AeroComm.

be disabled with recommendation from AeroComm. Below is a list containing some of the

variables affected by Auto Config and their respective values:

Table

Table Table

Table 10

1010

–

––

– Auto Config Parameters

Auto Config Parameters Auto Config Parameters

Auto Config Parameters

Description

DescriptionDescription

Description2

EEPROM

EEPROM EEPROM

EEPROM

Address

AddressAddress

Address

Default

DefaultDefault

Default

Acknowledge

Acknowledge Acknowledge

Acknowledge

Mode

ModeMode

Mode

47 5 5

48 60 60

4E 8 9

50 FD FD

51 2 2

52 0 0

53 E4 E4

54 5 5

55 50 50

57 7 7

59 4 4

RF Packet Size 5B 40 40

CTS On 5C C0 C0

CTS Hysteresis 5D 80 80

5E 0E 0E

5F 3 3

2 Parameters without a Description are undocumented protocol parameters and should only be modified to a

value other than shown in this table when recommended by AeroComm.

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

/8/2007

8/20078/2007

8/2007

3737

6.6.

Dimensions

DimensionsDimensions

Dimensions

All AC4424 products measure 1.65”W x 2.65”L. Critical parameters are as follows:

• J1

J1J1

J1 – 20 pin OEM interface connector (Samtec TMM-110-01-L-D-SM, mates with

Samtec SMM-110-02-S-D)

• MMCX Jack

MMCX JackMMCX Jack

MMCX Jack – Antenna connector (Johnson Components P/N 135-3711-822)

mates with any manufacturer’s MMCX plug

Figure

Figure Figure

Figure 2

–

––

– AC4424 with MMCX

AC4424 with MMCX AC4424 with MMCX

AC4424 with MMCX

AC4424 Specifications

AC4424 SpecificationsAC4424 Specifications

AC4424 Specifications

/8/2007

8/20078/2007

8/2007

3838

Figure

Figure Figure

Figure 3

–

––

– AC4424 with Integral

AC4424 with Integral AC4424 with Integral

AC4424 with Integral Antenna

Antenna Antenna

Antenna

Ordering Information

Ordering Information Ordering Information

Ordering Information

/8/2007

8/20078/2007

8/2007

3939

7.7.

Ordering Information

Ordering InformationOrdering Information

Ordering Information

7.1

7.17.1

7.1

PRODUCT

RODUCT RODUCT

RODUCT P

PART

ART ART

ART N

NUMBERS

UMBERSUMBERS

UMBERS

AC4424

AC4424AC4424

AC4424-

-9AJ

9AJ9AJ

9AJ: AC4424 with 9mW output power, interface data rates to 288Kbps, integral

microstrip antenna, -40°C to 80°C

AC4424

AC4424AC4424

AC4424-

-10

1010

10: AC4424 with 10mW output power, interface data rates to 288Kbps, MMCX

antenna connector, -40°C to 80°C

AC4424

AC4424AC4424

AC4424-

-10A

10A10A

10A: AC4424 with 10mW output power, interface data rates to 288Kbps, integral

microstrip antenna, -40°C to 80°C

AC4424

AC4424AC4424

AC4424-

-100

100100

100: AC4424 with 50mW output power, interface data rates to 288Kbps, MMCX

antenna connector, -40°C to 80°C

AC4424

AC4424AC4424

AC4424-

-200

200200

200: AC4424 with 200mW output power, interface data rates to 288Kbps, MMCX

antenna connector, -40°C to 80°C

7.2

7.27.2

7.2

DEVELOPER

EVELOPER EVELOPER

EVELOPER K

KIT

IT IT

IT P

PART

ART ART

ART N

NUMBERS

UMBERSUMBERS

UMBERS

SDK

SDKSDK

SDK-

-4424

44244424

4424-

-9AJ

9AJ9AJ

9AJ: Includes (2) AC4424-9AJ transceivers, (2) RS232 Serial Adapter

Boards, (2) 6Vdc unregulated power supplies, (2) Serial cables,

configuration/testing software, Integration engineering support

SDK

SDKSDK

SDK-

-4424

44244424

4424-

-10

1010

10: Includes (2) AC4424-10 transceivers, (2) RS232 Serial Adapter Boards, (2)

6Vdc unregulated power supplies, (2) Serial cables, (2) S151FL-5-RMM-

2450S dipole antennas with 5” pigtail and MMCX connector,

configuration/testing software, Integration engineering support

SDK

SDKSDK

SDK-

-4424

44244424

4424-

-10A

10A10A

10A: Includes (2) AC4424-10A transceivers, (2) RS232 Serial Adapter

Boards, (2) 6Vdc unregulated power supplies, (2) Serial cables,

configuration/testing software, Integration engineering support

SDK

SDKSDK

SDK-

-4424

44244424

4424-

-100

100100

100: Includes (2) AC4424-100 transceivers, (2) RS232 Serial Adapter

Boards, (2) 6Vdc unregulated power supplies, (2) Serial cables, (2) S151FL-

5-RMM-2450S dipole antennas with 5” pigtail and MMCX connector,

configuration/testing software, Integration engineering support

SDK

SDKSDK

SDK-

-4424

44244424

4424-

-200

200200

200: Includes (2) AC4424-200 transceivers, (2) RS232 Serial Adapter

Boards, (2) 6Vdc unregulated power supplies, (2) Serial cables, (2) S151FL-

5-RMM-2450S dipole antennas with 5” pigtail and MMCX connector,

configuration/testing software, Integration engineering support

Regulatory Information

Regulatory Information Regulatory Information

Regulatory Information

/8/2007

8/20078/2007

8/2007

4040

8.8.

Regulatory Information

Regulatory InformationRegulatory Information

Regulatory Information

Agency Identification Numbers

Agency Identification NumbersAgency Identification Numbers

Agency Identification Numbers

Part Number

Part NumberPart Number

Part Number

US/FCC

US/FCCUS/FCC

US/FCC

CAN/IC

CAN/ICCAN/IC

CAN/IC

EUR/EN

EUR/ENEUR/EN

EUR/EN

AC4424-9AJ KQL-44249AJ 2268C-44249AJ CE

AC4424-10 KQL-PKLR2400 CAN2268391158A

AC4424-100 KQL-AC4424 CAN2268C391190A CE

AC4424-200 KQL-PKLR2400-

200 CAN2268391180A

8.1

8.18.1

8.1

FCC

FCCFCC

FCC

The user is responsible for all labeling and ensuring the module complies with FCC regulations

(see 47CFR2 for exact regulations).

• The FCC identifier proceeded by “FCC ID:” and the FCC Notice found below

must be clearly visible on the outside of the equipment.

• The RF Exposure Warning (next page) also must be printed inside the

equipment’s user manual.

The FCC/IC approval was granted with the module classified as mobile (ie. the antenna is

>20 cm from the human body with the exception of hands, wrists, feet, and ankles). The

end user needs to ensure that the antenna location complies with this or retest for

portable classification (less than 2.5 cm with the same exceptions as mobile) at their

own expense.

FCC regulations allow the use of any antenna of the same type and of equal or less gain.

However the antenna is still required to have a unique antenna connector such as MMCX

or reverse SMA. On the following page is a table of antennas available through

AeroComm. Any different antenna type or antenna with gain greater than those listed

must be tested to comply with FCC Section 15.203 for unique antenna connectors and

Section 15.247 for emissions at user’s expense.

Caution

CautionCaution

Caution: Any changes or modifications not expressly approved by AeroComm could void

the FCC compliancy of the AC4424.

Regulatory Information

Regulatory Information Regulatory Information

Regulatory Information

/8/2007

8/20078/2007

8/2007

4141

FCC Notice

FCC NoticeFCC Notice

FCC Notice

FCC Labeling Requirements

FCC Labeling RequirementsFCC Labeling Requirements

FCC Labeling Requirements

FCC RF Exposure AC4424

FCC RF Exposure AC4424FCC RF Exposure AC4424

FCC RF Exposure AC4424

WARNING:

WARNING: WARNING:

WARNING:

This device complies with Part 15 of the FCC Rules. Operation is subject

to the following two conditions: (1) This device may not cause harmful

interference, and (2) This device must accept any interference received,

including interference that may cause undesired operation.

WARNING:

WARNING: WARNING:

WARNING:

The Original Equipment Manufacturer (OEM) must ensure that FCC

labeling requirements are met. This includes a clearly visible label on the

outside of the OEM enclosure specifying the appropriate AeroComm FCC

identifier for this product as well as the FCC Notice above.

WARNING:

WARNING: WARNING:

WARNING:

To satisfy FCC RF exposure requirements for mobile type transmitting

devices, a separation distance of 20 cm or more should be maintained

between the antenna of this device and persons during operation, with

exception of hands wrist, feet, and ankles. To ensure compliance,

operations at closer distance than this distance is prohibited.

The preceding statement must be included as a CAUTION statement in

manuals for OEM products to alert users on FCC RF Exposure

compliance.

Regulatory Information

Regulatory Information Regulatory Information

Regulatory Information

/8/2007

8/20078/2007

8/2007

4242

8.2

8.28.2

8.2

CECE

The AC4424-100 is a Class 2 transceiver that is harmonized everywhere except France.

Therefore, the end product will have to be marked with a “CE(!)” (the ! is encircled). For

complete rules and regulations on labeling in Europe refer to the R&TTE Directive Article 12

and Annex VII.

And the country or countries that the end user intends to sell product in be notified prior to

shipping product. Further information about this regulation can be found in Article 6.4 of the

R&TTE Directive.

Caution

CautionCaution

Caution: Any changes or modifications not expressly approved by AeroComm could void the

CE compliancy of the AC4424.

CE Labeling Requirements

CE Labeling RequirementsCE Labeling Requirements

CE Labeling Requirements

WARNING:

WARNING: WARNING:

WARNING:

The Original Equipment Manufacturer (OEM) must ensure that CE

labeling requirements are met. This includes a clearly visible label on the

outside of the OEM enclosure specifying the appropriate CE marking.

Further information can be found in the R&TTE Directive Article 12 and

Annex VII.

Regulatory Information

Regulatory Information Regulatory Information

Regulatory Information

/8/2007

8/20078/2007

8/2007

4343

8.3

8.38.3

8.3

APPROVED

PPROVED PPROVED

PPROVED A

ANTENNA

NTENNA NTENNA

NTENNA L

LIST

ISTIST

IST

Item

ItemItem

Item

Part Number

Part NumberPart Number

Part Number

Mfg.

Mfg.Mfg.

Mfg.

Type

TypeType

Type

Gain

Gain Gain

Gain

(dBi)

(dBi)(dBi)

(dBi)

AC4424X

AC4424X-

-10

C4424X

C4424X-

-100

100

Europe/France

C4424X

4424X

C4424X

4424X-

-100

100

US/Canada

AC4424X

AC4424X-

-200

200

1 WCP-2400-MMCX Centurion ½ Wave Dipole 2 X X X X

2 WCR-2400-SMRP Centurion ½ Wave Dipole 2 X X X

3 MFB24008RPN Maxrad

Omni-

Directional 8 X

4 BMMG24000MSMARP12’ Maxrad

Omni-

Directional 1 X

5 BMMG24005MSMARP12’ Maxrad

Omni-

Directional 5 X

6 MP24013TMSMARP12 Maxrad Panel 13 X

MUF24005M174MSMARP1

2 Maxrad

Omni-

Directional 5 X

8 MC2400 Maxrad Patch 2.5 X

9 NZH2400-MMCX (External) AeroComm Microstrip 1 X X

10 NZH2400-I (Integral) AeroComm Microstrip 1 X X

11 S131CL-5-RMM-2450S Nearson ½ Wave Dipole 2 X X X X

12 S181FL-5-RMM-2450S Nearson ½ Wave Dipole 2 X X X X

13 S191FL-5-RMM-2450S Nearson ½ Wave Dipole 3 X X X X

14 S151FL-5-RMM-2450S Nearson Collinear 5 X X

15 S152AH-2450S Nearson Collinear 4 X

16 S171AH-2450S Nearson Collinear 7 X

17 MLPV1700 Maxrad

Omni-

Directional 4 X

18 R380.500.127

Radial

Larsen ¼ Wave Dipole 2 X X X X

19 ANT-DB1-RMS-RPS Linx Monopole 3 X X

20 ANT-DB2-916/2.4-RP-SMA Linx

Dual Band

Patch 3 X X

21 ANT-YG12-N Linx Yagi 12 X

****AC4424

****AC4424****AC4424

****AC4424-

-9AJ is only a

9AJ is only a9AJ is only a

9AJ is only approved for operation with the integral antenna layed out on the

pproved for operation with the integral antenna layed out on the pproved for operation with the integral antenna layed out on the

pproved for operation with the integral antenna layed out on the

board.

board.board.

board.

Laird Connectivity 44249AJ RF Transceiver Module User Manual

AeroComm Corporation RF Transceiver Module Users Manual

Users Manual

Navigation menu

Namespaces

Views

Navigation