Laird Connectivity AC4490-100 900 MHz Transceiver User Manual AC4424

AC4490

AC4490AC4490

AC4490

900 MHz OEM TRANSCEIVERS

900 MHz OEM TRANSCEIVERS900 MHz OEM TRANSCEIVERS

900 MHz 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 1.5

Version 1.5Version 1.5

Version 1.5

10981 EICHER DRIVE

10981 EICHER DRIVE10981 EICHER DRIVE

10981 EICHER DRIVE

LENEXA, KS 66219

LENEXA, KS 66219LENEXA, KS 66219

LENEXA, KS 66219

(800) 492-2320

(800) 492-2320(800) 492-2320

(800) 492-2320

www.aerocomm.com

www.aerocomm.comwww.aerocomm.com

www.aerocomm.com

wireless@aerocomm.com

wireless@aerocomm.comwireless@aerocomm.com

wireless@aerocomm.com

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DOCUMENT INFORMATION

DOCUMENT INFORMATIONDOCUMENT INFORMATION

DOCUMENT INFORMATION

Copyright

CopyrightCopyright

Copyright

Information

InformationInformation

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 material is preliminary

This material is preliminaryThis material is preliminary

This material 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.

Important Document Information

Important Document InformationImportant Document Information

Important Document Information

The AC4490 transceiver products are available in both commercial and industrial temperature,

noted by the character ‘C’ or ‘I’ appended to the end of the family part number. For example, the

part number for the commercial temperature version is AC4490C and the part number for the

industrial temperature version is AC4490I. The family part number will be used throughout this

document, except where specific information for the commercial or industrial temperature versions

is noted.

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DOCUMENT INFORMATION

DOCUMENT INFORMATIONDOCUMENT INFORMATION

DOCUMENT INFORMATION

Revision

RevisionRevision

Revision Description

DescriptionDescription

Description

Version 1.0 3/15/2002 – Initial Release Version

Version 1.1 12/18/2002 – Preliminary Release

Version 1.2 12/20/2002 – Preliminary Release. Changed location of new interface pins for higher

compatibility with AC4424 product family.

Version 1.3 1/29/2003 – Updated interface baud rate formula/table. Updated current consumption

table. Corrected RSSI plot. Updated Interface Timeout information. Renamed product

family to AC4490. Multiple byte EEPROM read/write now allowed.

Version 1.4 2/18/2003 – Added Max Power byte. Removed Write Enable references. Fixed Power

Down/Up command response. Removed Peer-to-Peer bit. Added Auto Destination.

Added Unicast Only bit. Added 500mW product. Revised part numbers. Updated

Channel Number settings.

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FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

FCC INFORMATION

Agency Approval Overview

Agency Approval OverviewAgency Approval Overview

Agency Approval Overview

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 Portable

PortablePortable

Portable Mobile

MobileMobile

Mobile Fixed

FixedFixed

Fixed

AC4490-100 X X See Note 1 X-2.5cm* X-2.5cm*

* See RF Exposure warning on next page

Note 1: Specific Absorption Rating (SAR) testing required for portable applications.

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

AC4490-100 X X

FCC Notice

FCC NoticeFCC Notice

FCC Notice

Labeling Requirements

Labeling RequirementsLabeling Requirements

Labeling Requirements

Antenna Warning

Antenna WarningAntenna Warning

Antenna Warning

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: This device has been tested with an MMCX connector with the antennas listed

below. When integrated in the OEMs product, these fixed antennas require

installation preventing end-users from replacing them with non-approved

antennas. Any antenna not in the following table must be tested to comply with

FCC Section 15.203 for unique antenna connectors and Section 15.247 for

emissions.

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. The FCC identifiers are listed above

in the Agency Identifier Numbers section.

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FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

FCC INFORMATION

Approved Antenna List

Approved Antenna ListApproved Antenna List

Approved Antenna List

Note: We are still qualifying antennas and will add to this list as that process is completed.

Note: We are still qualifying antennas and will add to this list as that process is completed.Note: We are still qualifying antennas and will add to this list as that process is completed.

Note: We are still qualifying antennas and will add to this list as that process is completed.

Item

ItemItem

Item Part Number

Part NumberPart Number

Part Number Mfg.

Mfg.Mfg.

Mfg. Frequency

FrequencyFrequency

Frequency

Band

BandBand

Band Type

TypeType

Type Gain

GainGain

Gain

(dBi)

(dBi)(dBi)

(dBi)

AC4490X-100

AC4490X-100AC4490X-100

AC4490X-100

1 S467FL-6-RMM-915S Nearson 902 – 928MHz ½ Wave Dipole 2 PMF

2 S161AH-915R Nearson 902 – 928MHz ½ Wave Dipole 2.5 PMF

3 S331AH-915 Nearson 902 – 928MHz ¼ Wave Dipole 1 PMF

4 1020B5812-04 (Flavus 915) gigaAnt 902 – 928MHz ¼ Wave Snap-In -0.5 PMF

P=Portable, M=Mobile, F=Fixed/Basestation

P=Portable, M=Mobile, F=Fixed/BasestationP=Portable, M=Mobile, F=Fixed/Basestation

P=Portable, M=Mobile, F=Fixed/Basestation

Note: Specific Absorption Rating (SAR) testing required for portable applications.

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FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

FCC INFORMATION

RF Exposure AC4490-100

RF Exposure AC4490-100RF Exposure AC4490-100

RF Exposure AC4490-100

WARNING:

WARNING: WARNING:

WARNING: To comply with FCC RF Exposure requirements, the Original Equipment

Manufacturer (OEM) must ensure that the approved antenna in the previous

table must be installed and/or configured to operate with a separation distance

of 2.5cm or more from all persons to satisfy RF Exposure compliance.

The preceding statement must be included as a CAUTION statement in

manuals for products operating with the approved antennas in the previous

table to alert users on FCC RF Exposure compliance.

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TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

1. OVERVIEW...................................................................................................................................... 9

2. AC4490 SPECIFICATIONS.......................................................................................................... 10

3. SPECIFICATIONS......................................................................................................................... 11

3.1 INTERFACE SIGNAL DEFINITIONS................................................................................................... 11

3.2 ELECTRICAL SPECIFICATIONS ........................................................................................................ 12

3.3 SYSTEM TIMING............................................................................................................................. 12

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

3.3.2 Latency Times ....................................................................................................................... 13

3.3.3 Maximum Overall System Throughput.................................................................................. 13

4. CONFIGURING THE AC4490..................................................................................................... 14

4.1 EEPROM PARAMETERS................................................................................................................ 14

4.2 EEPROM CONFIGURATION COMMANDS....................................................................................... 15

4.2.1 EEPROM Byte Read ............................................................................................................. 16

4.2.2 EEPROM Byte Write............................................................................................................. 16

4.2.3 EEPROM Exit Configuration Command .............................................................................. 16

4.3 ON-THE-FLY CONTROL COMMAND REFERENCE............................................................................ 17

4.3.1 Status Request....................................................................................................................... 17

4.3.2 Change Channel without Forced Acquisition Sync............................................................... 17

4.3.3 Change Channel with Forced Acquisition Sync.................................................................... 18

4.3.4 Server/Client Command........................................................................................................ 18

4.3.5 Sync to Channel Command................................................................................................... 19

4.3.6 Power-Down Command........................................................................................................ 19

4.3.7 Power-Down Wake-Up Command........................................................................................ 19

4.3.8 Broadcast Mode.................................................................................................................... 20

4.3.9 Write Destination Address .................................................................................................... 20

4.3.10 Read Destination Address..................................................................................................... 20

4.3.11 Read Digital Inputs............................................................................................................... 21

4.3.12 Read ADC ............................................................................................................................. 21

4.3.13 Report Last Valid RSSI ......................................................................................................... 22

4.3.14 Write Digital Outputs............................................................................................................ 22

4.3.15 Write DAC............................................................................................................................. 23

4.3.16 Set Max Power...................................................................................................................... 23

4.3.17 Transmit Buffer Empty.......................................................................................................... 24

5. THEORY OF OPERATION.......................................................................................................... 25

5.1 HARDWARE INTERFACE ................................................................................................................. 25

5.1.1 GIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOn (Generic Outputs 0 and

1) (pins 1 and 9 respectively).................................................................................................................... 25

5.1.2 TXD (Transmit Data) and RXD (Receive Data) (pins 2 and 3 respectively) ........................ 25

5.1.3 Hop Frame (pin 6) ................................................................................................................ 25

5.1.4 CTS Handshaking (pin 7)...................................................................................................... 26

5.1.5 RTS Handshaking (pin 8)...................................................................................................... 26

5.1.6 9600 Baud/Packet Frame (pin 12)........................................................................................ 26

5.1.7 RSSI (pin 13)......................................................................................................................... 26

5.1.8 UP_Reset (pin 15)................................................................................................................. 27

5.1.9 Command/Data (pin 17) ....................................................................................................... 27

5.1.10 AD In and AD Out (pins 18 and 19 respectively).................................................................. 28

5.1.11 In Range (pin 20) .................................................................................................................. 28

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5.2 SOFTWARE PARAMETERS............................................................................................................... 28

5.2.1 RF Architecture (Unicast/Broadcast) ................................................................................... 28

5.2.2 RF Mode ............................................................................................................................... 29

5.2.3 Sub Hop Adjust ..................................................................................................................... 29

5.2.4 Duplex Mode......................................................................................................................... 30

5.2.5 Interface Timeout/RF Packet Size......................................................................................... 30

5.2.6 Serial Interface Baud Rate.................................................................................................... 30

5.2.7 Network Topology................................................................................................................. 31

5.2.8 Frequency Offset................................................................................................................... 32

5.2.9 Auto Config........................................................................................................................... 32

5.2.10 Max Power............................................................................................................................ 33

6. APPLICATION EXAMPLES........................................................................................................ 34

7. DIMENSIONS................................................................................................................................. 35

8. ORDERING INFORMATION...................................................................................................... 36

8.1 PRODUCT PART NUMBER TREE ..................................................................................................... 36

8.2 PRODUCT PART NUMBERS............................................................................................................. 36

8.3 DEVELOPER KIT PART NUMBERS .................................................................................................. 37

Figures

FiguresFigures

Figures

Figure 1 – RSSI Voltage vs. Received Signal Strength................................................................................27

Figure 2 - AC4490 Top & Side View...........................................................................................................35

Tables

TablesTables

Tables

Table 1 – Pin Definitions..............................................................................................................................11

Table 2 – Input Voltage Characteristics........................................................................................................ 12

Table 3 – Output Voltage Characteristics.....................................................................................................12

Table 4 – Maximum Overall System Throughputs.......................................................................................13

Table 5 – EEPROM Parameters....................................................................................................................14

Table 6 – Baud Rate......................................................................................................................................31

Table 7 – US and International RF Channel Number Settings ..................................................................... 31

Table 8 – Auto Config Parameters................................................................................................................32

Table 9 – Max Power Settings......................................................................................................................33

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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AC4490 Features

AC4490 FeaturesAC4490 Features

AC4490 Features

! Available in either 3.3V or 5V TTL level serial interface for fast integration

! Drop-in replacement for AC4424 2.4GHz product family1

! Two generic input and output digital lines and integrated DAC/ADC functions

! Frequency Hopping Spread Spectrum for security and interference rejection

! Cost Efficient for high volume applications

! Very low power consumption for battery powered implementations

! Small size for portable and enclosed applications

! Very Low latency and high throughput

! Industrial temperature version available (-40°C to 80°C)

1.

1.1.

1. Overview

OverviewOverview

Overview

The AC4490 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 900 MHz ISM band.

The AC4490 is a cost-effective, high performance, 900 MHz 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 AC4490 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.

AC4490 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.

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

AeroComm AC4490 transceiver and an OEM Host. Information includes the theory of operation,

specifications, interface definition, configuration information and mechanical drawing.

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

agency requirements listed herein before selling any product.

1 See AC4424/AC4490 Integration Guide for details

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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2.

2.2.

2. AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

GENERAL

GENERALGENERAL

GENERAL

Interface 20 pin mini-connector

Serial Interface Data Rate PC baud rates from 1200 bps to 115,200 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

Pwr-Down

Pwr-DownPwr-Down

Pwr-Down

AC4490-100: 43mA 95mA 160mA 30mA TBD

Channels (used to create independent networks) 5 Channel Sets comprising 58 total channels

Security One byte System ID

RADIO

RADIORADIO

RADIO

Frequency Band US/Canada: 902 – 928 MHz

Australia: 915 – 928 MHz

Radio Type Frequency Hopping Spread Spectrum

Output Power (conducted, no antenna) AC4490-100: 50mW typical

Effective Isotropic Radiated Power (EIRP with

3dBi gain antenna) AC4490-100: 100mW typical

Voltage 3.3 or 3.3 - 6V ±2%, ±50mV ripple

Sensitivity -100dBm typical

Range (based on 3dBi gain antenna) AC4490-100: 10,000 ft.

ENVIRONMENTAL

ENVIRONMENTALENVIRONMENTAL

ENVIRONMENTAL

Temperature (Operating) Commercial:

Industrial: AC4490C: 0°C to 60°C

AC4490I: -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 1.9” x 0.20”

Antenna AC4490-100: MMCX Jack or Integral Antenna

Weight Less than 0.75 ounce

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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3.

3.3.

3. Specifications

SpecificationsSpecifications

Specifications

3.1

3.13.1

3.1 I

IIINTERFACE

NTERFACE NTERFACE

NTERFACE S

SS

SIGNAL

IGNAL IGNAL

IGNAL D

DD

DEFINITIONS

EFINITIONSEFINITIONS

EFINITIONS

The AC4490 has a simple interface that allows OEM Host communications with the transceiver. Table 1

Table 1Table 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

respect to the transceiver. All outputs are 3.3VDC levels and inputs are 5VDC TTL with the exception of

RSSI, AD In and AD Out, which are all analog. All inputs are weakly pulled High and may be left floating

during normal operation.

Table

Table Table

Table 1

11

1 –

– –

– Pin Definitions

Pin DefinitionsPin Definitions

Pin Definitions

PinPin

Pin Type

TypeType

Type Signal Name

Signal NameSignal Name

Signal Name Function

FunctionFunction

Function

1 O GO0 Interruptible Generic Output pin

2 O TXD Transmitted data out of the transceiver

3 I RXD Data input to the transceiver

4 I GI0 Interruptible Generic Input pin

5 GND GND Signal Ground

6 O 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 O GO1 Generic Output pin

10 PWR VCC 3.3 or 3.3 – 6V ± 2%, ± 50mV ripple

11 PWR VCC 3.3 or 3.3 – 6V ± 2%, ±50 mV ripple

12 I 9600_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 rate. To exit, transceiver must be reset or power-

cycled with 9600_Baud logic High.

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

strength while in Receive Mode

14 I GI1 Generic Input pin

15 I UP_RESET RESET – Controlled by the AC4490 for power-on reset if left unconnected. After a Stable

power-on, a logic High pulse will reset the AC4490. Do not power-up the transceiver with this

pin tied Low.

16 GND GND Signal Ground

17 I Command/Data When logic Low, transceiver interprets Host data as command data. When logic High,

transceiver interprets Host data as transmit data.

18 I AD In Analog Data Input

19 O AD Out Analog Data Output

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

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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3.2

3.23.2

3.2 E

EE

ELECTRICAL

LECTRICAL LECTRICAL

LECTRICAL S

SS

SPECIFICATIONS

PECIFICATIONSPECIFICATIONS

PECIFICATIONS

Table

Table Table

Table 2

22

2 – Input Voltage Characteristics

– Input Voltage Characteristics – Input Voltage Characteristics

– Input Voltage Characteristics

PinPin

Pin 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 2 5.5 0 0.8 V @ 5µA

4 I GI0 2 5.5 0 0.8 V @ 5µA

8 I RTS 2 5.5 0 0.8 V @ 5µA

12 I 9600_Baud 2 5.5 0 0.8 V @ 5µA

14 I GI1 2 5.5 0 0.8 V @ 5µA

15 I UP_RESET 0.8 5.5 0 0.6 V @ 5µA

17 I Command/Data 2 5.5 0 0.8 V @ 5µA

18 I AD In N/A 3.3 0 N/A V @ 1µA

Table

Table Table

Table 3

33

3 – Output Voltage Characteristics

– Output Voltage Characteristics – Output Voltage Characteristics

– Output Voltage Characteristics

PinPin

Pin 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

1 O GO0 2.5 @ 8mA 0.4 @ 8mA V

2 O TXD 2.5 @ 2mA 0.4 @ 2mA V

6 O Hop Frame 2.5 @ 2mA 0.4 @ 2mA V

7 O CTS 2.5 @ 2mA 0.4 @ 2mA V

9 O GO1 2.5 @ 2mA 0.4 @ 2mA V

12 O Packet Frame 2.5 @ 2mA 0.4 @ 2mA V

13 O RSSI See Figure 1 See Figure 1 V

19 O AD Out N/A N/A V2

20 O IN_RANGE 2.5 @ 2mA 0.4 @ 2mA V

3.3

3.33.3

3.3 S

SS

SYSTEM

YSTEM YSTEM

YSTEM T

TT

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.

3.3.1

3.3.13.3.1

3.3.1

Serial Interface Data Rate

Serial Interface Data RateSerial Interface Data Rate

Serial 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 1200 bps to 115,200 bps. The only

supported mode is asynchronous – 8-bit, No Parity, 1 Start Bit, and 1 Stop Bit.

..

.

2 AD Out is an unbuffered, high impedance output and must be buffered by the OEM Host when used.

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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3.3.2

3.3.23.3.2

3.3.2

Latency Times

Latency TimesLatency Times

Latency Times

TBD

3.3.3

3.3.33.3.3

3.3.3

Maximum Overall System Throughput

Maximum Overall System Throughput Maximum Overall System Throughput

Maximum Overall System Throughput

When configured as shown in the table below, an AC4490 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 4

44

4 – Maximum Overall System Throughputs

– Maximum Overall System Throughputs – Maximum Overall System Throughputs

– Maximum Overall System Throughputs

RF Mode Interface Baud

Rate Duplex FEC Direction Throughput

(bps)

Stream 57.6k Half Disabled One way TBD

Stream 57.6k Half Enabled One way TBD

Acknowledge 57.6k Half Disabled One way TBD

Acknowledge 57.6k Full Disabled Both ways TBD

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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4.

4.4.

4. Configuring the AC4490

Configuring the AC4490Configuring the AC4490

Configuring the AC4490

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 5 - EEPROM Parameters

Table 5 - EEPROM ParametersTable 5 - EEPROM Parameters

Table 5 - 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 not write to any EEPROM

Do not write to any EEPROMDo not write to any EEPROM

Do not write to any EEPROM

addresses other than those listed below. Do not copy a transceiver’s EEPROM data to another

addresses other than those listed below. Do not copy a transceiver’s EEPROM data to anotheraddresses other than those listed below. Do not copy a transceiver’s EEPROM data to another

addresses other than those listed below. Do not copy a transceiver’s EEPROM data to another

transceiver. Doing so may cause the transceiver to malfunction.

transceiver. Doing so may cause the transceiver to malfunction.transceiver. Doing so may cause the transceiver to malfunction.

transceiver. Doing so may cause the transceiver to malfunction.

Table

Table Table

Table 5

55

5 – EEPROM Parameters

– EEPROM Parameters – EEPROM Parameters

– EEPROM Parameters

Parameter

ParameterParameter

Parameter EEPROM

EEPROMEEPROM

EEPROM

Address

AddressAddress

Address Length

LengthLength

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.

Sub Hop Adjust 36H 1 00 – FFh 66h This value should only be changed

when recommended by Aerocomm

Channel

Number 40H 1 00 – 39h 00h

Set 0 = 00 – 0Fh (US/Canada)

Set 1 = 10 – 2Fh (US/Canada)

Set 2 = 30 – 37h (Australia)

Set 3 = 38h (France High Power)

Set 4 = 39h (France Low Power)

Server/Client

Mode 41H 1 01 – 02h 02h 01h = Server

02h = Client

Baud Rate Low 42H 1 00 – FFh FCh Low Byte of the interface baud rate.

Baud Rate High 43H 1 00h 00h Always 00h

Control 0 45H 1 00010100b

(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 – RF Mode

0 = RF Stream Mode

1 = RF Acknowledge Mode

Bit 1 – RF Delivery

0 = Addressed

1 = Broadcast

Bit 0 – FEC

0 = No Forward Error Correction

1 = Use Forward Error Correction

AC4490 Specifications

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AC4490 Specifications

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1515

15

Parameter

ParameterParameter

Parameter EEPROM

EEPROMEEPROM

EEPROM

Address

AddressAddress

Address Length

LengthLength

Length

(Bytes)

(Bytes)(Bytes)

(Bytes) Range

RangeRange

Range Default

DefaultDefault

Default Description

DescriptionDescription

Description

Frequency

Offset 46H 1 00 – FFh 00h

Transmit

Retries 4CH 1 01 – FFh 10h

Broadcast

Attempts 4DH 1 01 – FFh 04h

API Control 56H 1 01000011b

(43h) 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 – Unicast Only

0 = Receive Unicast and Broadcast

packets

1 = Only receive Unicast packets

Bit 4 – Auto Destination

0 = Use Destination Address

1 = 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 02 – FFh 04h

Sync Channel 5AH 1 00 – 3Fh 01h

RF Packet Size 5BH 1 01 – 40h 46h

CTS On 5CH 1 01 – FFh D2h

CTS On

Hysteresis 5DH 1 01 – FFh ACh

Max Power 63H 1 00 – FFh 60h

Destination ID 70H 6 6 Bytes

System ID 76H 1 00 – FFh 01h

MAC ID 80H 6 6 Bytes Unique IEEE MAC Address

4.2

4.24.2

4.2 EEPROM C

EEPROM CEEPROM C

EEPROM CONFIGURATION

ONFIGURATION ONFIGURATION

ONFIGURATION C

CC

COMMANDS

OMMANDSOMMANDS

OMMANDS

The configuration set allows the Host to modify the operation of the transceiver. If the Command/Data

pin (Pin 17) is pulled logic Low, a transceiver will interpret incoming Host data as Command Data. The

Host can then read and write parameters using the various configuration commands listed below. To

exit Configuration Mode, the Host must perform a hardware or power-on reset or issue an Exit

Command Mode command to the transceiver.

AC4490 Specifications

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AC4490 Specifications

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1616

16

4.2.1

4.2.14.2.1

4.2.1

EEPROM Byte Read

EEPROM Byte ReadEEPROM Byte Read

EEPROM Byte Read

Upon receiving this command, a transceiver will transmit the desired data from the address requested

by the Host.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = C0h

Byte 2 = Address

Byte 3 = Length (01…FFh = 1…255 bytes; 00h = 256 bytes)

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = C0h

Byte 2 = Address

Byte 3 = Length

Byte 4…n = Data at requested address(s)

4.2.2

4.2.24.2.2

4.2.2

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 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 Host.

Multiple byte EEPROM writes are allowed up to a length of 128 bytes. An EEPROM boundary exists

between addresses 7Fh and 80h. No single EEPROM write command shall write to addresses on

both sides of that EEPROM boundary.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = C1h

Byte 2 = Address

Byte 3 = Length (01 – 80h)

Byte 4…n = Data to store at Address

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = C1h

Byte 2 = Address

Byte 3 = Length (01 – 80h)

Byte 4 = Last data byte written by this command

4.2.3

4.2.34.2.3

4.2.3

EEPROM Exit Configuration Command

EEPROM Exit Configuration CommandEEPROM Exit Configuration Command

EEPROM Exit Configuration Command

The OEM Host can cause the transceiver to exit command mode by issuing the Exit Configuration

Command mode command to the transceiver. However, the transceiver will not reflect any of the

However, the transceiver will not reflect any of theHowever, the transceiver will not reflect any of the

However, the transceiver will not reflect any of the

changes programmed into the EEPROM until the transceiver is reset.

changes programmed into the EEPROM until the transceiver is reset.changes programmed into the EEPROM until the transceiver is reset.

changes programmed into the EEPROM until the transceiver is reset.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = 56h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = 56h

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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1717

17

4.3

4.34.3

4.3 O

OO

ON

NN

N-

--

-THE

THETHE

THE-F

-F-F

-FLY

LY LY

LY C

CC

CONTROL

ONTROL ONTROL

ONTROL C

CC

COMMAND

OMMAND OMMAND

OMMAND R

RR

REFERENCE

EFERENCEEFERENCE

EFERENCE

The AC4490 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. Do not to modify

Do not to modifyDo not to modify

Do not to modify

undocumented static addresses as undesired operation may occur. All “CC” commands must be

undocumented static addresses as undesired operation may occur. All “CC” commands must beundocumented static addresses as undesired operation may occur. All “CC” commands must be

undocumented static addresses as undesired operation may occur. All “CC” commands must be

issued from the Host to the transceiver with Command/Data (Pin 17) pulled logic Low. To exit “CC”

issued from the Host to the transceiver with Command/Data (Pin 17) pulled logic Low. To exit “CC”issued from the Host to the transceiver with Command/Data (Pin 17) pulled logic Low. To exit “CC”

issued from the Host to the transceiver with Command/Data (Pin 17) pulled logic Low. To exit “CC”

mode, simply take the Command/Data pin High.

mode, simply take the Command/Data pin High.mode, simply take the Command/Data pin High.

mode, simply take the Command/Data pin High.

4.3.1

4.3.14.3.1

4.3.1

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

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

4.3.2

4.3.24.3.2

4.3.2

Change Channel without Forced Acquisition Sync

Change Channel without Forced Acquisition SyncChange Channel without Forced Acquisition Sync

Change Channel without Forced Acquisition Sync

The Host issues this command to change the channel of the transceiver. The transceiver will not begin

acquisition sync until its Range Refresh timer expires.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 01h

Byte 3 = RF Channel Number (Hexadecimal)

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = RF Channel Number (Hexadecimal)

AC4490 Specifications

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AC4490 Specifications

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18

4.3.3

4.3.34.3.3

4.3.3

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

immediately 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)

4.3.4

4.3.44.3.4

4.3.4

Server/Client Command

Server/Client CommandServer/Client Command

Server/Client Command

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 = Software Version Number

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = Data1 from Host Command

AC4490 Specifications

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AC4490 Specifications

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19

4.3.5

4.3.54.3.5

4.3.5

Sync to Channel Command

Sync to Channel CommandSync to Channel Command

Sync to Channel Command

The Host issues this command to change the Sync Channel

Sync ChannelSync Channel

Sync Channel byte. This will only affect operation when

Sync to Channel

Sync to ChannelSync to Channel

Sync to Channel is enabled in the EEPROM

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 05h

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = New Sync Channel

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = 05h

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = Data1 from Host Command

4.3.6

4.3.64.3.6

4.3.6

Power-Down Command

Power-Down CommandPower-Down Command

Power-Down Command

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-Down Wake-Up Command

Power-Down Wake-Up CommandPower-Down Wake-Up Command

Power-Down Wake-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

4.3.7

4.3.74.3.7

4.3.7

Power-Down Wake-Up Command

Power-Down Wake-Up CommandPower-Down Wake-Up Command

Power-Down Wake-Up Command

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

AC4490 Specifications

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AC4490 Specifications

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2020

20

4.3.8

4.3.84.3.8

4.3.8

Broadcast Mode

Broadcast ModeBroadcast Mode

Broadcast Mode

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

Addressed ModeAddressed Mode

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

4.3.9

4.3.94.3.9

4.3.9

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

veryvery

very

powerful

powerful powerful

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

Only the threeOnly the three

Only the three

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

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

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 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 the three LSB’s of the destination MAC Address

4.3.10

4.3.104.3.10

4.3.10

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 very

veryvery

very

powerful

powerful powerful

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

Only the threeOnly the three

Only the three

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

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

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 the three LSB’s of the destination MAC Address

AC4490 Specifications

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AC4490 Specifications

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21

4.3.11

4.3.114.3.11

4.3.11

Read Digital Inputs

Read Digital InputsRead Digital Inputs

Read Digital Inputs

The Host issues this command to read both digital input lines.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 20h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Where:

Where:Where:

Where:

Data1 = bit 0 – GI0, bit 1 – GI1

4.3.12

4.3.124.3.12

4.3.12

Read ADC

Read ADCRead ADC

Read ADC

The Host issues this command to read any of the three onboard A/D converters.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 21h

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = 00h – AD In, 01h – Temperature, 02h – RSSI

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Byte 3 = Data2

Where:

Where:Where:

Where:

Data1 = MSB of requested 12 bit ADC value

Data2 = LSB of requested 12 bit ADC value

AC4490 Specifications

AC4490 SpecificationsAC4490 Specifications

AC4490 Specifications

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2222

22

4.3.13

4.3.134.3.13

4.3.13

Report Last Valid RSSI

Report Last Valid RSSIReport Last Valid RSSI

Report Last Valid RSSI

As RSSI values are only valid when the local radio is receiving a RF packet from a remote radio,

instantaneous RSSI can be very tricky to use. Therefore, the transceiver stores the most recent valid

RSSI value. The Host issues this command to request that value. Note: This value will default to FFh if

no valid RSSI measurement has been made.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 22h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Where:

Where:Where:

Where:

Data1 = Most significant 8 bits of last valid RSSI reading.

4.3.14

4.3.144.3.14

4.3.14

Write Digital Outputs

Write Digital OutputsWrite Digital Outputs

Write Digital Outputs

The Host issues this command to write both digital output lines to particular states.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 23h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Where:

Where:Where:

Where:

Data1 = bit 0 – GO0, bit 1 – GO1

AC4490 Specifications

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AC4490 Specifications

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2323

23

4.3.15

4.3.154.3.15

4.3.15

Write DAC

Write DACWrite DAC

Write DAC

The Host issues this command to write AD Out to a particular voltage. NOTE: AD Out is an unbuffered,

high impedance output and must be buffered

must be bufferedmust be buffered

must be buffered by the OEM Host when used.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 24h

Byte 3 = Data1

Byte 4 = Data2

Where:

Where:Where:

Where:

Data1 = Update Period where: TUpdate = (255 * (Data1 + 1)) / 14.7256+06

Data2 = Duty Cycle where: Vout = (Data2 / 100h) * Vcc

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Byte 3 = Data2

Where:

Where:Where:

Where:

Data1 = Data1 from Host Command

Data2 = Data2 from Host Command

4.3.16

4.3.164.3.16

4.3.16

Set Max Power

Set Max PowerSet Max Power

Set Max Power

The Host Issues this command to limit the maximum transmit power emitted by the transceiver. This

can be useful to minimize current consumption and satisfy certain regulatory requirements.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 25h

Byte 3 = Data1

Where:

Where:Where:

Where:

Data1 = New Max Power

Max PowerMax Power

Max Power

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = Data1

Where:

Where:Where:

Where:

Data1 = Data1 from Host Command

AC4490 Specifications

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AC4490 Specifications

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24

4.3.17

4.3.174.3.17

4.3.17

Transmit Buffer Empty

Transmit Buffer EmptyTransmit Buffer Empty

Transmit Buffer Empty

The Host issues this command to determine when the RF Transmit buffer is empty. The Host will not

receive the transceiver response until that time.

Host Command:

Host Command:Host Command:

Host Command:

Byte 1 = CCh

Byte 2 = 30h

Transceiver Response:

Transceiver Response:Transceiver Response:

Transceiver Response:

Byte 1 = CCh

Byte 2 = 00h

AC4490 Specifications

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25

5.

5.5.

5. Theory of Operation

Theory of OperationTheory of Operation

Theory of Operation

5.1

5.15.1

5.1 H

HH

HARDWARE INTERFACE

ARDWARE INTERFACEARDWARE INTERFACE

ARDWARE INTERFACE

Below is a description of all hardware pins used to control the AC4490.

5.1.1

5.1.15.1.1

5.1.1

GIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOn

GIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOnGIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOn

GIn (Generic Inputs 0 and 1) (pins 4 and 14 respectively) and GOn

(Generic Outputs 0 and 1) (pins 1 and 9 respectively)

(Generic Outputs 0 and 1) (pins 1 and 9 respectively)(Generic Outputs 0 and 1) (pins 1 and 9 respectively)

(Generic Outputs 0 and 1) (pins 1 and 9 respectively)

Both GIn pins, when enabled in EEPROM, serve as negative-going edge triggered generic input pins.

Both GOn pins, when enabled in EEPROM, serve as generic output pins. The following functions can

be accomplished with these pins.

GIn/GOn Options:

GIn/GOn Options:GIn/GOn Options:

GIn/GOn Options:

1) A negative-going edge is detected on either GIn pin. The state of both pins is transmitted over

the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented to corresponding GOn pins on the

remote radio(s).

2) A “CC” command is issued to force an update on remote radio’s GOn pins. The state of both

local GIn lines is transmitted over the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented to

corresponding Gon pins on the remote radio(s).

3) The

Read Digital Inputs

Read Digital Inputs Read Digital Inputs

Read Digital Inputs

“CC” command is issued to read the state of both GIn pins locally

(details can be found in the

On-the-Fly Control Command Reference

On-the-Fly Control Command ReferenceOn-the-Fly Control Command Reference

On-the-Fly Control Command Reference

).

4) The

Write Digital Outputs

Write Digital Outputs Write Digital Outputs

Write Digital Outputs

“CC” command is issued to write all GOn pins locally to particular

states (details can be found in the

On-the-Fly Control Command Reference

On-the-Fly Control Command ReferenceOn-the-Fly Control Command Reference

On-the-Fly Control Command Reference

).

5) A “CC” command is issued to write the GOn pins on a remote radio to particular states.

Those states are transmitted over the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented to

the corresponding pins on the remote radio(s).

5.1.2

5.1.25.1.2

5.1.2

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

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

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

The AC4490 accepts 3.3 or 5VDC TTL level asynchronous serial data on 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).

5.1.3

5.1.35.1.3

5.1.3

Hop Frame (pin 6)

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

Hop Frame (pin 6)

The AC4490 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.

AC4490 Specifications

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AC4490 Specifications

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5.1.4

5.1.45.1.4

5.1.4

CTS Handshaking (pin 7)

CTS Handshaking (pin 7)CTS Handshaking (pin 7)

CTS Handshaking (pin 7)

The AC4490 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.

5.1.5

5.1.55.1.5

5.1.5

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: Leaving RTS disabled for too long can cause data loss

Note: Leaving RTS disabled for too long can cause data lossNote: Leaving RTS disabled for too long can cause data loss

Note: Leaving RTS disabled for too long can cause data loss

once the transceiver’s receive buffer fills up.

once the transceiver’s receive buffer fills up.once the transceiver’s receive buffer fills up.

once the transceiver’s receive buffer fills up.

5.1.6

5.1.65.1.6

5.1.6

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.

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.

5.1.7

5.1.75.1.7

5.1.7

RSSI (pin 13)

RSSI (pin 13)RSSI (pin 13)

RSSI (pin 13)

Instantaneous RSSI

Instantaneous RSSIInstantaneous RSSI

Instantaneous RSSI

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.

AC4490 Specifications

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AC4490 Specifications

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27

Validated RSSI

Validated RSSIValidated RSSI

Validated RSSI

As RSSI values are only valid when the local radio is receiving a RF packet from a remote radio,

instantaneous RSSI can be very tricky to use. Therefore, the transceiver stores the most recent valid

RSSI value. The Host issues the

Report Last Good RSSI

Report Last Good RSSI Report Last Good RSSI

Report Last Good RSSI

command to request that value (details can

be found in the

On-the-Fly Control Command Reference

On-the-Fly Control Command ReferenceOn-the-Fly Control Command Reference

On-the-Fly Control Command Reference

). Validated RSSI is not available at the RSSI

pin.

Figure

Figure Figure

Figure 1

11

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

5.1.8

5.1.85.1.8

5.1.8

UP_Reset (pin 15)

UP_Reset (pin 15)UP_Reset (pin 15)

UP_Reset (pin 15)

UP_Reset provides a direct connection to the reset pin on the AC4490 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

Command/Data (pin 17)

Command/Data (pin 17)Command/Data (pin 17)

Command/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)

(see section 4)(see section 4)

(see section 4).

0

0.2

0.4

0.6

0.8

1

1.2

-105 -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50

Signal at Receiver (dBm)

Voltage (VDC)

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28

5.1.10

5.1.105.1.10

5.1.10

AD In and AD Out (pins 18 and 19 respectively)

AD In and AD Out (pins 18 and 19 respectively)AD In and AD Out (pins 18 and 19 respectively)

AD In and AD Out (pins 18 and 19 respectively)

When enabled in EEPROM, AD In and AD Out can be used as a cost savings to replace Analog-to-

Digital and Digital-to-Analog converter hardware. The following conditions are all possible when

enabled in EEPROM. Note: AD Out is an unbuffered, high impedance output and must be buffered

must be bufferedmust be buffered

must be buffered by

the OEM Host when used.

1) A refresh rate can be programmed in EEPROM to cause a transceiver to read the AD In port

and send the state of that port over the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented

to the AD Out pin on the remote radio(s).

2) A “CC” command is issued to cause a transceiver to read the AD In port locally and send the

state of that port over the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented to the AD Out

pin on the remote radio(s).

3) The

Read ADC

Read ADCRead ADC

Read ADC

command is issued to read the state of AD In locally (details can be found in

the

On-the-Fly Control Command Reference

On-the-Fly Control Command ReferenceOn-the-Fly Control Command Reference

On-the-Fly Control Command Reference

).

4) The

Write ADC

Write ADCWrite ADC

Write ADC

command is issued to write the AD Out pin to a particular state locally (details

can be found in the

On-the-Fly Control Command Reference

On-the-Fly Control Command ReferenceOn-the-Fly Control Command Reference

On-the-Fly Control Command Reference

).

6) A “CC” command is issued to write the AD Out pin on a remote radio(s) to a particular state.

This state is transmitted over the RF (as configured by RF Mode

RF ModeRF Mode

RF Mode) and will be presented to the

AD Out pin on the remote radio(s).

5.1.11

5.1.115.1.11

5.1.11

In Range (pin 20)

In Range (pin 20)In Range (pin 20)

In Range (pin 20)

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 7.5s, 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.

5.2

5.25.2

5.2 S

SS

SOFTWARE

OFTWARE OFTWARE

OFTWARE P

PP

PARAMETERS

ARAMETERSARAMETERS

ARAMETERS

Below is a description of all software parameters used to control the AC4490.

5.2.1

5.2.15.2.1

5.2.1

RF Architecture (Unicast/Broadcast)

RF Architecture (Unicast/Broadcast)RF Architecture (Unicast/Broadcast)

RF Architecture (Unicast/Broadcast)

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

RFRF

RF

Channel Number

Channel NumberChannel Number

Channel Number in the same coverage area, as the interference between the two Servers will severely

hinder RF communications.

The AC4490 runs a Peer-to-Peer type architecture where all transceivers, whether Servers or Clients,

can communicate with all other transceivers. To prohibit transceivers from receiving broadcast

packets, Unicast Only

Unicast OnlyUnicast Only

Unicast Only can be enabled.

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29

5.2.2

5.2.25.2.2

5.2.2

RF Mode

RF ModeRF Mode

RF Mode

All radios located on the same network must use the same RF Mode.

All radios located on the same network must use the same RF Mode.All radios located on the same network must use the same RF Mode.

All radios located on the same network must use the same RF Mode.

RF Delivery Overview

RF Delivery OverviewRF Delivery Overview

RF Delivery Overview

All packets are sent out over the RF as either addressed or broadcast packets. Addressed packets are

only received by the radio specified by Destination Address

Destination AddressDestination Address

Destination Address. If addressed packets are desired, the

Destination Address

should be programmed with the MAC ID

MAC IDMAC ID

MAC ID of the destination radio. To simplify

EEPROM programming, Auto Destination

Auto DestinationAuto Destination

Auto Destination can be enabled in Clients which allows the Client to

automatically set its Destination Address to the address of the Server. Broadcast packets are sent out

to every eligible transceiver on the network. If broadcast packets are desired, RF Delivery

RF DeliveryRF Delivery

RF Delivery should be

set to Broadcast.

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 is 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 is 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.

Stream Mode

Stream ModeStream Mode

Stream Mode

In Broadcast Stream mode, the RF packet is broadcast out to all eligible receivers on the network. In

Addressed Stream Mode, the RF packet is sent out to the receiver designated by the Destination

DestinationDestination

Destination

Address

AddressAddress

Address. The sending transceiver will send each RF packet out once. There are no retries on the

packet. Whether or not the packet contains errors, the receiver(s) will send the packet to the OEM

Host. However, if receiver is not able to receive the packet in its entirety (there are bytes missing), it will

not send the packet to the OEM Host. In order to increase the odds of successful delivery, Forward

ForwardForward

Forward

Error Correction (FEC)

Error Correction (FEC)Error Correction (FEC)

Error Correction (FEC) may be used. FEC is used (transparent to the OEM Host) to increase the odds

of correctly receiving a packet sent over the RF. When enabled, the transceiver will send every byte

over the RF 3 times and then perform a best-of-three bit-wise decision on the received bytes. Enabling

FEC can cut overall throughput by 1/3. Note: All transceivers on the same network must have the

Note: All transceivers on the same network must have theNote: All transceivers on the same network must have the

Note: All transceivers on the same network must have the

same setting for FEC. Stream Mode is incompatible with Full Duplex Mode.

same setting for FEC. Stream Mode is incompatible with Full Duplex Mode.same setting for FEC. Stream Mode is incompatible with Full Duplex Mode.

same setting for FEC. Stream Mode is incompatible with Full Duplex Mode.

5.2.3

5.2.35.2.3

5.2.3

Sub Hop Adjust

Sub Hop AdjustSub Hop Adjust

Sub Hop Adjust

Sub Hop Adjust is an AC4490 protocol parameter and should only be modified at the recommendation

of Aerocomm.

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30

5.2.4

5.2.45.2.4

5.2.4

Duplex Mode

Duplex ModeDuplex Mode

Duplex Mode

In Half Duplex mode, the AC4490 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 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 on the same network must have the same setting

Note: All transceivers on the same network must have the same settingNote: All transceivers on the same network must have the same setting

Note: All transceivers on the same network must have the same setting

for Full Duplex. Full Duplex mode is incompatible with Stream RF mode.

for Full Duplex. Full Duplex mode is incompatible with Stream RF mode.for Full Duplex. Full Duplex mode is incompatible with Stream RF mode.

for Full Duplex. Full Duplex mode is incompatible with Stream RF mode.

5.2.5

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 1ms increments and has a tolerance of ±1ms.

Therefore, the Interface Timeout should be set to a minimum of 2. The default value for Interface

Timeout is 4 or 4ms.

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.

5.2.6

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 5 - Baud Rate/Timeout

Table 5 - Baud Rate/TimeoutTable 5 - Baud Rate/Timeout

Table 5 - Baud Rate/Timeout lists values for some common baud rates. Baud rates below

1200 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 pulled logic Low at reset, the baud rate

If the 9600_BAUD pin (Pin 12) is pulled logic Low at reset, the baud rateIf the 9600_BAUD pin (Pin 12) is pulled logic Low at reset, the baud rate

If the 9600_BAUD pin (Pin 12) is pulled logic Low at reset, the baud rate

will be forced to 9,600

will be forced to 9,600will be forced to 9,600

will be forced to 9,600.

. .

. For Baud Rate values other than those shown in Table 5 - Baud Rate

Table 5 - Baud RateTable 5 - Baud Rate

Table 5 - Baud Rate, the

following equation can be used:

BAUD = 100h - (14.7456E

BAUD = 100h - (14.7456EBAUD = 100h - (14.7456E

BAUD = 100h - (14.7456E+06

+06 +06

+06 / (64 * desired baud rate))

/ (64 * desired baud rate))/ (64 * desired baud rate))

/ (64 * desired baud rate))

BaudH= Always 0

BaudH= Always 0BaudH= Always 0

BaudH= Always 0

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)

AC4490 Specifications

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31

Table

Table Table

Table 6

66

6 – Baud Rate

– Baud Rate – Baud Rate

– Baud Rate

Baud

BaudBaud

Baud

Rate

RateRate

Rate BaudL

BaudLBaudL

BaudL

(42h)

(42h)(42h)

(42h) BaudH

BaudHBaudH

BaudH

(43h)

(43h)(43h)

(43h) Minimum Interface Timeout

Minimum Interface TimeoutMinimum Interface Timeout

Minimum Interface Timeout

(58h)

(58h)(58h)

(58h)

115,200 FEh 00h 02h

57,600 FCh 00h 02h

38,400 FAh 00h 02h

28,800 F8h 00h 02h

19,200 F4h 00h 02h

14,400 F0h 00h 03h

9,600 E8h 00h 03h

4800 D0h 00h 05h

2400 A0h 00h 09h

1200 40h 00h 11h

5.2.7

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 AC4490 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-to-Channel

Sync-to-ChannelSync-to-Channel

Sync-to-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. Four Channel sets are

provided for the AC4490. Co-located networks must use the same Channel Set.

Co-located networks must use the same Channel Set.Co-located networks must use the same Channel Set.

Co-located networks must use the same Channel Set.

Table

Table Table

Table 7

77

7 – 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 Details and Regulatory

Requirements Countries

0 0 – 0Fh 902 – 928MHz (26 hop bins) US/Canada

1 10 – 2Fh 902 – 928MHz (50 hop bins) US/Canada

2 30 – 37h 915 – 928MHz Australia

3 38h 869.4 – 869.5MHz (Up to 500mW at 10%

maximum transmit vs. receive duty cycle) France

4 39h 869.7 – 870MHz (Up to 5mW with no duty

cycle requirement) France

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.

AC4490 Specifications

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AC4490 Specifications

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32

5.2.8

5.2.85.2.8

5.2.8

Frequency Offset

Frequency OffsetFrequency Offset

Frequency Offset

Frequency Offset is an AC4490 protocol parameter and should only be modified at the

recommendation of Aerocomm.

5.2.9

5.2.95.2.9

5.2.9

Auto Config

Auto ConfigAuto Config

Auto Config

The AC4490 has several variables that control its RF performance and vary by RF Mode

RF ModeRF Mode

RF Mode and RF

RFRF

RF

Architecture

ArchitectureArchitecture

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 been optimized for 115,200

Auto Config has been optimized for 115,200Auto Config has been optimized for 115,200

Auto Config has been optimized for 115,200

baud Acknowledge Mode and all lower baud rates. It should only be disabled with recommendation

baud Acknowledge Mode and all lower baud rates. It should only be disabled with recommendationbaud Acknowledge Mode and all lower baud rates. It should only be disabled with recommendation

baud Acknowledge Mode and all lower baud rates. It should only be disabled with recommendation

from AeroComm.

from AeroComm.from AeroComm.

from AeroComm. Below is a list containing some of the variables affected by Auto Config and their

respective values:

Table

Table Table

Table 8

88

8 – Auto Config Parameters

– Auto Config Parameters – Auto Config Parameters

– Auto Config Parameters

Parameter Auto Config Value

RF Packet Size 46h

CTS On D2h

CTS On Hysteresis ACh

AC4490 Specifications

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AC4490 Specifications

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3333

33

5.2.10

5.2.105.2.10

5.2.10

Max Power

Max PowerMax Power

Max Power

Max Power provides a means for controlling the RF transmit output power of the AC4490. The

following table lists some common values for Max Power and their current consumption. Output

power and current consumption can vary by as much as ±10% per radio.

Table

Table Table

Table 9

99

9 – Max Power Settings

– Max Power Settings – Max Power Settings

– Max Power Settings

Max Power (Address 63h) 100% Transmit Current (mA) Transmit Power Output(dBm)

00h 47 -20

01h 50 -10

02h 50.5 -3

03h 52 1

04h 55 4

05h 58.5 7

06h 63.5 9

07h 69 10.5

08h 76 12

09h 83 13.5

0Ah 90.5 14.5

0Bh 97.5 15.5

0Ch 105 16.5

0Dh 111.5 17

AC4490 Specifications

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AC4490 Specifications

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3434

34

6.

6.6.

6. Application Examples

Application ExamplesApplication Examples

Application Examples

TBD

AC4490 Specifications

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AC4490 Specifications

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35

7.

7.7.

7. Dimensions

DimensionsDimensions

Dimensions

All AC4490 products measure 1.9”L x 1.65”W. 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 (Telegartner P/N J01341C0081) mates with any

manufacturer’s MMCX plug

Figure

Figure Figure

Figure 2

22

2 - AC4490 Top & Side View

- AC4490 Top & Side View - AC4490 Top & Side View

- AC4490 Top & Side View

Ordering Information

Ordering Information Ordering Information

Ordering Information

2/18/03

2/18/032/18/03

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3636

36

8.

8.8.

8. Ordering Information

Ordering InformationOrdering Information

Ordering Information

8.1

8.18.1

8.1 P

PP

PRODUCT

RODUCT RODUCT

RODUCT P

PP

PART

ART ART

ART N

NN

NUMBER

UMBER UMBER

UMBER T

TT

TREE

REEREE

REE

8.2

8.28.2

8.2 P

PP

PRODUCT

RODUCT RODUCT

RODUCT P

PP

PART

ART ART

ART N

NN

NUMBERS

UMBERSUMBERS

UMBERS

Order transceivers using the following part number tables:

3.3V, 100 mW Part Numbers 4.5 – 5.5V, 100 mW Part Numbers

AC4490C-100A-3 AC4490I-100A-3 AC4490C-100A-5 AC4490I-100A-5

AC4490C-100M-3 AC4490I-100M-3 AC4490C-100M-5 AC4490I-100M-5

Ordering Information

Ordering Information Ordering Information

Ordering Information

2/18/03

2/18/032/18/03

2/18/03 37

3737

37

8.3

8.38.3

8.3 D

DD

DEVELOPER

EVELOPER EVELOPER

EVELOPER K

KK

KIT

IT IT

IT P

PP

PART

ART ART

ART N

NN

NUMBERS

UMBERSUMBERS

UMBERS

Order Developer Kits using the following part number tables:

4.5 – 5.5V, 200 mW Developer Kit Part Numbers

SDK-AC4490I-100A-5

SDK-AC4490I-100M-5

All Developer Kits include (2) transceivers, (2) RS232 Serial Adapter Boards, (2) 6Vdc unregulated

power supplies, (2) Serial cables, (2) S467FL-6-RMM-915S dipole antennas with 6” pigtail and MMCX

connector, configuration/testing software, and integration engineering support.

Laird Connectivity AC4490-100 900 MHz Transceiver User Manual AC4424

AeroComm Corporation 900 MHz Transceiver AC4424

Users Manual

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