AeroComm PKLR2400-200 Users Manual

AC5124

AC5124AC5124

2.4 GHz OEM TRANSCEIVER

2.4 GHz OEM TRANSCEIVER2.4 GHz OEM TRANSCEIVER

Specifications Subject to Change

Specifications Subject to ChangeSpecifications Subject to Change

User’s Manual

User’s ManualUser’s Manual

Version 4.4

Version 4.4Version 4.4

10981 EICHER DRIVE

10981 EICHER DRIVE10981 EICHER DRIVE

LENEXA, KS 66219

LENEXA, KS 66219LENEXA, KS 66219

(800) 492-2320

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

www.aerocomm.com

www.aerocomm.comwww.aerocomm.com

wireless@aerocomm.com

wireless@aerocomm.comwireless@aerocomm.com

DOCUMENT INFORMATION

DOCUMENT INFORMATIONDOCUMENT INFORMATION

CopyrightCopyright Information

Information

InformationInformation

This material is preliminary

This material is preliminaryThis material is preliminary

Information furnished by A

EROCOMM

by A

are covered by the warranty and patent indemnification provisions appearing in its

Terms of Sale only. A

EROCOMM

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 A

All brands and product names in this publication are registered trademarks or trademarks of their respective holders.

EROCOMM

, Inc. A

EROCOMM

makes no warranty, express, statutory, and implied or by

EROCOMM

in this specification is believed to be accurate. Devices sold

description, regarding the information set forth herein. A

, Inc. reserves the right to make

, Inc. is prohibited.

EROCOMM

reserves the right to change

specifications at any time and without notice.

EROCOMM

’s products are intended for use in normal commercial applications. Applications requiring extended temperature range or unusual environmental requirements such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional testing for such application.

11/24/03 2

DOCUMENT INFORMATION

DOCUMENT INFORMATIONDOCUMENT INFORMATION

Revision

Revision Description

RevisionRevision

Version 3.6 Remove SDK developer kit information – 6/6/00

Version 3.7 6/28/00 – Made data rates uniform at 882 Kbps

Version 3.8 8/18/00 – Changed Input Voltage tolerance from 5% to 2%

Version 3.9 9/25/00 – Corrected DTR pin number from 33 to 34, Pin 33 is NC

Version 4.2 10/25/01 - Changed PKLR2400S part number to AC5124C

Version 4.3 3/25/01 – Changed Interface Timeout values in Table 6, EEPROM Parameters

Version 4.4 11/24/03 – Updated all references to operating temperature from 0°C to 60°C to -40°C to

Description

DescriptionDescription

Re-arrange the layout of the specification to ease use Correct Channels from 75 to 77 and provide range in Hex, Section 5.1.3

Reformat I/O table to view additional line descriptions

Changed temperature from 0 – 60 °C to 0 – 70 °C Changed Baud Low Default from F7 to F1 Updated Section 6 – API Command Set with examples & corrections Added pin notations on Figure 1 - Mechanical Overview of AC5124C

Changed Pin 24 from Reserved to NC Remove Note from the CTS timing diagram in Sections 3.3.1 & 4.6 Changed description for Diagnostic Result command in Section 6.1.3

Added AC5124C-200 information Added Section 3.3, Electrical Specifications Added RSSI calibration steps in Section 3.2.1 Added Section 4.6, Addressed & Broadcast Communication Added Section 4.7, Handshaking Updated Table 6, EEPROM Parameters to include new parameters Updated Section 5, API Command Set to include command examples Updated Section 6, Configuring the AC5124C to include new parameter definitions Added Section 7, Initializing the AC5124C Transceiver Updated Section 8, Mechanical Overview to include new drawings

Updated RF Mode 1 (EEPROM Address 4Ch) to include new definition for Bit 7 Added Section 6.1.15.5, Mixed Mode Updated Approved Antenna List

80°C. All AC5124 products are industrial temperature. Added AT Commands for reading and writing the EEPROM. Updated RSSI plot for new receiver IC.

11/24/03 3

FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

Agency Approval Overview

Agency Approval OverviewAgency Approval Overview

Part Number

Part Number US/FCC

Part NumberPart Number

AC5124-10 X X X X X

AC5124-200 X X X-20cm*

* See RF Exposure warning on page 6 ** Does not include France and Spain Note: The product approvals above are with antennas specified on page 5.

Agency Identification Numbers

Agency Identification NumbersAgency Identification Numbers

Part Number

Part Number US/FCC

Part NumberPart Number AC5124-10 KQL-PKLR2400 CAN2268391158A X AC5124-200 KQL-PKLR2400-200 CAN2268391180A

FCC Notice

FCC NoticeFCC Notice

WARNING:

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

WARNING: WARNING:

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.

US/FCC CAN/IC

US/FCCUS/FCC

US/FCC CAN/IC

US/FCCUS/FCC

CAN/IC EUR/EN**

CAN/ICCAN/IC

EUR/EN** Portable

EUR/EN**EUR/EN**

CAN/IC EUR/EN

CAN/ICCAN/IC

Portable Mobile

PortablePortable

EUR/EN

EUR/ENEUR/EN

Mobile

MobileMobile

Antenna Warning

Antenna WarningAntenna Warning

WARNING:

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

WARNING: WARNING:

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.

11/24/03 4

FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

Approved Antenna List

Approved Antenna ListApproved Antenna List

AC5124-10

AC5124-10AC5124-10

AC5124-10

AC5124-10A

AC5124-10AAC5124-10A

AC5124-10A

Item

Item Part Number

Part Number Manufacturer

ItemItem

Part NumberPart Number

1 WCP-2400-MMCX Centurion 2 PM M 2 WCR-2400-SMRP Centurion 2 PM 3 MFB24008RPN Maxrad 8 PM 4 BMMG24000MSMARP12’ Maxrad 1 PM 5 BMMG24005MSMARP12’ Maxrad 5 PM 6 MP24013TMSMARP12 Maxrad 13 M 7 MUF24005M174MSMARP12 Maxrad 5 PM 8 MC2400 Maxrad 2.5 M

9 NZH2400-MMCX (External) AeroComm 1 PM M 10 NZH2400-I (Integrated) AeroComm 1 PM 11 S131CL-5-RMM-2450S Nearson 2 M 12 S181FL-5-RMM-2450S Nearson 2 PM M 13 S191FL-5-RMM-2450S Nearson 3 PM M 14 S151FL-5-RMM-2450S Nearson 5 PM M 15 MLPV1700 Maxrad 4 PM M

Manufacturer Gain (dBi)

ManufacturerManufacturer

Gain (dBi)

Gain (dBi)Gain (dBi)

AC5124-200

AC5124-200AC5124-200

AC5124-200

AC5124-200A

AC5124-200AAC5124-200A

AC5124-200A

P=Portable, M=Mobile

P=Portable, M=MobileP=Portable, M=Mobile

11/24/03 5

FCC INFORMATION

FCC INFORMATIONFCC INFORMATION

Labeling Requirements

Labeling RequirementsLabeling Requirements

WARNING:

WARNING: The Original Equipment Manufacturer (OEM) must ensure that FCC labeling

WARNING: WARNING:

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.

RF Exposure AC5124-10

RF Exposure AC5124-10RF Exposure AC5124-10

WARNING:

WARNING: This equipment has been approved for portable applications where the

WARNING: WARNING:

equipment can be used in direct contact with the human body. Excessive RF exposure should be avoided.

The preceding statement must be included as a CAUTION statement in manuals for products operating with Antennas 3, 4, 5, 6, 7, 14 and 15 in the previous table to alert users on FCC RF Exposure compliance.

RF Exposure AC5124-200

RF Exposure AC5124-200RF Exposure AC5124-200

WARNING:

WARNING: To satisfy FCC RF exposure requirements for mobile and base station

WARNING: WARNING:

transmitting devices, a separation distance of 20cm or more should be maintained between the antenna of this device and persons during operation. To ensure compliance, operations at closer than this distance is not recommended.

The preceding statement must be included as a CAUTION statement in manuals for OEM products to alert users on FCC RF Exposure compliance.

11/24/03 6

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

TABLES......................................................................................................................................................... 8

1. OVERVIEW........................................................................................................................................ 10

2. AC5124 SPECIFICATIONS..............................................................................................................11

3. THEORY OF OPERATION..............................................................................................................12

1.1 D

1.2 I

EFINITIONS

NTERFACE SIGNAL DEFINITIONS

.................................................................................................................................. 12

................................................................................................... 13

1.2.1 Received Signal Strength Indicator (RSSI)...........................................................................14

1.1.2 In Range (IN_RANGE)..........................................................................................................15

1.1.3 Baud Rate Selector (BDSEL)................................................................................................ 15

1.1.4 Microprocessor Reset (µP_RESET)...................................................................................... 15

1.1.5 EEPROM Write Enable (WR_ENA)...................................................................................... 15

1.3 E

LECTRICAL SPECIFICATIONS

......................................................................................................... 16

4. SERIAL INTERFACE MODES........................................................................................................17

4.1 S

4.2 S

4.3 S

4.4 S

4.5 S

4.6 A

ERIAL INTERFACE MODE ERIAL INTERFACE MODE ERIAL INTERFACE MODE ERIAL INTERFACE MODE ERIAL INTERFACE BUFFER

DDRESSED

ROADCAST COMMUNICATION

& B

01 – T 02 – T

RANSPARENT RANSPARENT

IXED PACKET LENGTH, WITH TIMEOUT

, F

ND CHARACTER

, E

................................................ 17

............. 17

03 – API .............................................................................................. 18

04 – T

RANSPARENT

IXED PACKET LENGTH, NO TIMEOUT

, F

................ 18

........................................................................................................... 18

.............................................................................. 18

4.6.1 Addressed Mode.................................................................................................................... 19

4.6.2 Broadcast Mode.................................................................................................................... 20

4.7 H

ANDSHAKING

............................................................................................................................... 20

4.7.1 CTS Handshaking ................................................................................................................. 20

4.7.2 RTS Handshaking..................................................................................................................21

4.7.3 Modem Handshaking............................................................................................................21

5. API COMMAND SET........................................................................................................................ 22

5.1 S

YSTEM COMMAND SET

................................................................................................................ 23

5.1.1 Reset..................................................................................................................... ................. 23

5.1.2 Control.................................................................................................................................. 24

5.1.3 Diagnostic Result.................................................................................................................. 24

5.1.4 Standby.................................................................................................................................. 25

5.1.5 Status Request....................................................................................................................... 25

5.1.6 Status Reply........................................................................................................................... 25

5.1.7 Update EEPROM Checksum.................................................................................................26

5.1.8 Check EEPROM Checksum .................................................................................................. 26

5.1.9 EEPROM Checksum Status...................................................................................................26

5.1.10 Acknowledge.........................................................................................................................27

5.2 T

RANSCEIVER COMMAND SET

....................................................................................................... 27

5.2.1 RF Enable.............................................................................................................................27

5.2.2 Send Data.............................................................................................................................. 28

5.2.3 Send Data Complete ............................................................................................................. 28

5.2.4 Received Data.......................................................................................................................29

5.2.5 In Range................................................................................................................................ 29

5.2.6 Out of Range.........................................................................................................................29

6. AT COMMAND SET.........................................................................................................................30

6.1 IRAM D

EFINED

............................................................................................................................. 30

11/24/03 7

6.2 C

OMMAND INSTRUCTIONS/RESPONSES

.......................................................................................... 30

6.2.1 Enter Command Mode..........................................................................................................31

6.2.2 Exit Command Mode............................................................................................................. 31

6.2.3 Power-on Reset Command.................................................................................................... 32

6.2.4 Read IRAM Byte.................................................................................................................... 32

6.2.5 Write IRAM Byte................................................................................................................... 33

6.2.6 Read EEPROM Byte ............................................................................................................. 34

6.2.7 Write EEPROM Byte............................................................................................................. 35

7. CONFIGURING THE AC5124......................................................................................................... 36

7.1.1 Software Version Number..................................................................................................... 39

7.1.2 IEEE MAC Address............................................................................................................... 39

7.1.3 Channel................................................................................................................................. 40

7.1.4 Transmit Attempts.................................................................................................................40

7.1.5 Receive Mode........................................................................................................................ 40

7.1.6 Range Refresh....................................................................................................................... 41

7.1.7 Server/Client Mode...............................................................................................................41

7.1.8 System ID..............................................................................................................................42

7.1.9 End Character....................................................................................................................... 42

7.1.10 Baud High (BH) and Baud Low (BL)....................................................................................43

7.1.11 Fixed Packet Length High & Low......................................................................................... 43

7.1.12 Random Back-Off.................................................................................................................. 44

7.1.13 Serial Interface Mode............................................................................................................44

7.1.14 Transmit Mode...................................................................................................................... 47

7.1.15 RF Mode 1 ............................................................................................................................ 47

7.1.16 Read Switches .......................................................................................................................48

7.1.17 Interface Timeout.................................................................................................................. 50

7.1.18 Broadcast Attempts............................................................................................................... 50

7.1.19 RF Mode ............................................................................................................................... 50

7.1.20 Destination IEEE MAC Address........................................................................................... 52

7.1.21 Sleep Time............................................................................................................................. 52

7.1.22 Wait Time.............................................................................................................................. 52

8. INITIALIZING THE AC5124 TRANSCEIVER ............................................................................. 53

8.1 T

8.2 API M

RANSPARENT MODE INITIALIZATION

ODE INITIALIZATION

............................................................................................................ 53

........................................................................................... 53

9. MECHANICAL OVERVIEW .......................................................................................................... .55

10. ORDERING INFORMATION...................................................................................................... 57

10.1 P

10.2 D

Figures

FiguresFigures

Figure 1 - RSSI Voltage vs. Received Signal Strength Figure 2 - API Mode Initialization Figure 3 – AC5124 with MMCX Figure 4 – AC5124 with Integral Antenna

Tables

TablesTables

Table 1 - Interface Signal Definitions Table 2 - DC Input Voltage Characteristics Table 3 - DC Output Voltage Characteristics Table 4 - System Command Set

RODUCT PART NUMBERS

EVELOPER KIT PART NUMBERS

............................................................................................................. 57

..............................................................................................................54

.................................................................................................................55

.......................................................................................................13

..............................................................................................................23

................................................................................................... 57

..........................................................................14

................................................................................................56

.............................................................................................16

..........................................................................................16

11/24/03 8

Table 5 - Transceiver Command Set Table 6 - EEPROM Parameters Table 7 - BH/BL Selections For Common Baud Rates

.......................................................................................................27

................................................................................................................37

.........................................................................43

11/24/03 9

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

1. Overview

Overview

1.1.

OverviewOverview

This document contains information about the hardware and software interface between an AeroComm AC5124 transceiver and an OEM Host. Information includes the theory of operation, system issues, and a basic command set for operational control of the system and transceiver.

The transceiver is designed to allow flexibility at the hardware interface level with a minimum number of actual hardware pins connecting the transceiver and the OEM Host. The transceiver is controlled by a Temic TS87C51U2 microcontroller providing program storage. A separate EEPROM provides user configurable parameter storage.

AC5124 transceivers operate in a Point-to-Point or Point-to-Multipoint, Client/Server architecture. One transceiver is configured as a Server and the others are configured as Clients. Data can be transmitted from Client to Server or Server to Client, but not from Client to Client, or Server to Server.

The AC5124 runs a proprietary Carrier Sense Multiple Access (CSMA) protocol. Years of development, testing and field operation have proven this protocol to be a stable, reliable and efficient method for wireless network communications. Furthermore, the AeroComm protocol is configurable, allowing the OEM to optimize system performance. There are four different Serial Interface Modes provided by the protocol firmware. These Modes offer significant flexibility to the OEM, allowing them to provide data in many forms including API, End Character and Fixed Packet Length with and without Timeouts.

11/24/03 10

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

2. AC5124 Specifications

AC5124 Specifications

2.2.

AC5124 SpecificationsAC5124 Specifications

GENERAL

GENERALGENERAL

Bus Interface Serial (TTL Level Asynchronous) through 40 pin mini

Serial Interface Data Rate Programmable to 882 Kbps. PC rates to 115.2 Kbps Compliance

AC5124-10 AC5124-200 US (FCC 15.247); Canada (IC)

Power Consumption

All Serial Interface Modes

connector. AMP P/N 177986-1

Certifiable under:

AC5124-10: 111mA 123mA 158mA 100mA AC5124-200: 185mA 280mA 472mA 110mA

US (FCC 15.247); Canada (IC); Europe (EN)

Duty Cycle (TX=Transmit; RX=Receive

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

Duty Cycle (TX=Transmit; RX=ReceiveDuty Cycle (TX=Transmit; RX=Receive 25%TX

25%TX

50%TX

25%TX25%TX

50%TX

50%TX50%TX

100%TX

100%TX100%TX

100%RX

100%RX100%RX

Interface ON/RF OFF (API Mode Only) Sleep Walk (Clients in all Modes Only)

Deep Sleep (Servers in API Mode Only) Channels Supports 77 non-interfering channels Security User assigned System ID. Unique IEEE addresses on each

TRANSCEIVER

TRANSCEIVERTRANSCEIVER

Frequency Band 2.402 – 2.478 GHz Transceiver Type Frequency Hopping Spread Spectrum Output Power

AC5124-10

AC5124-200 Input Voltage 5V nominal +2%, + 50mV ripple Sensitivity -90dBm RF Data Rate 882 Kbps Range

AC5124-10

AC5124-200 Synchronization Time Average = 750ms; Maximum = 1.5s

ENVIRONMENTAL

ENVIRONMENTALENVIRONMENTAL

Temperature (Operating) -40°C to +80°C Temperature (Storage) -50°C to +85°C Humidity (non-condensing) 10% to 90%

45mA typical 25mA typical 20mA typical

transceiver.

10mW 200mW

Can be extended with directional antenna

Indoors up to 300 ft., Outdoors up to 3,000 ft. Indoors up to 500 ft., Outdoors up to 10,000 ft.

PHYSICAL

PHYSICALPHYSICAL

Dimensions 1.65” x 2.65” x 0.20” Antenna Connector Standard MMCX jack Weight Less than 0.75 ounces

SOFTWARE

SOFTWARESOFTWARE

User Configurable Options

Host Interface Data Rate Up to 882 Kbps

Maximum bi-directional throughput Up to 170kbps

Variable Packet Length Up to 2 KBytes

Serial Interface Modes (3) Transparent and (1) API

Diagnostic Error Counters API Mode

User Programmable Attempts Up to 255

11/24/03 11

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

3. Theory of Operation

Theory of Operation

3.3.

Theory of OperationTheory of Operation

The AC5124 has a serial interface that allows the OEM Host to send and receive communications to and from the transceiver. All I/O is 5Vdc TTL level signals except for RSSI, which is an analog output. All outputs are weakly pulled logic high (20 kΩ – 50 kΩ) when left unconnected and are driven logic high at reset.

EFINITIONS

3.1

3.1 DDDD

3.13.1

Server Host:

Server Host:Server Host:

Client Host:

Client Host: The Client Host is the OEM device controlling the Client transceiver.

Client Host:Client Host:

Host:

Host: Host refers to both the Server Host and the Client Host.

Host:Host:

Server Transceiver:

Server Transceiver:Server Transceiver: communications.

Client Transceiver:

Client Transceiver: The Client transceiver is a “Slave” transceiver. It is controlled by it’s own

Client Transceiver:Client Transceiver: Host, but is a slave to the Server transceiver.

Authentication:

Authentication: The acquisition of a Server IEEE 802.3 address by a Client transceiver and a

Authentication:Authentication: subsequent issue of an

EFINITIONS

EFINITIONSEFINITIONS

The Server Host is the OEM device controlling the Server transceiver.

The Server transceiver is the “Master” transceiver. It is the hub of all

In Range

In RangeIn Range

command by the Client transceiver to the Client Host.

Unicast Address:

Unicast Address: A frame that is directed to a single recipient as specified in IEEE 802.3.

Unicast Address:Unicast Address:

Broadcast Address:

Broadcast Address: A frame that is directed to multiple recipients as specified in IEEE 802.3.

Broadcast Address:Broadcast Address:

11/24/03 12

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

NTERFACE

3.2

3.2 IIII

3.23.2

NTERFACE

NTERFACE NTERFACE

IGNAL

SSSS

IGNAL IGNAL

EFINITIONS

DDDD

EFINITIONSEFINITIONS

The following pinout is for the 40-pin mini-connector, J1 (AMP P/N 177986-1). I/O direction is with regard to the transceiver. All pins not used by the OEM may be left floating.

Table

Table 1111 - Interface Signal Definitions

Table Table

Pin Type

PinPin

1 GND GND Signal Ground 2 I PKTMODE Logic low (Active Low) will force transceiver into “pseudo” Serial Interface

3 VCC VCC 5V + 2%, ±50 mV ripple 4 NC NC No Connect 5 VCC VCC 5V + 2%, ±50 mV ripple 6 NC NC No Connect 7 NC NC No Connect 8 NC NC No Connect

9 NC NC No Connect 10 NC NC No Connect 11 O RSSI Received Signal Strength Indicator - Analog output giving relative indication

12 NC NC No Connect 13 NC NC No Connect/Data 7 14 O TXD Transmitted data out of the transceiver 15 O IN_RANGE Logic low when a Client detects a Server with same Channel and System ID. 16 I RXD Data input to the transceiver 17 I RI_IN Ring Indicator to communicate to modem 18 NC NC No Connect 19 O RI_OUT Ring Indicator to communicate to computer 20 GND GND Ground 21 GND GND Ground 22 I DCD_IN Data Carrier Detect to communicate to modem 23 O CTS Clear to Send – Logic Low (Active Low) when the transceiver is ready to

24 NC NC No Connect 25 Reserved Reserved Reserved, must be left floating and not connected to logic high or low. 26 I BDSEL Baud Select – Logic low (Active Low) will force the transceiver into a known

27 I RTS Request to Send – Logic low (Active Low) when enabled and Host is ready

28 NC NC No Connect 29 NC NC No Connect 30 NC NC No Connect 31 NC NC No Connect 32 O DSR Data Set Ready 33 NC NC No Connect 34 I DTR Data Terminal Ready 35 NC NC No Connect 36 O DCD_OUT Data Carrier Detect to communicate to computer 37 I WR_ENA EEPROM Write Enable – Logic low will enable writes to the EEPROM.

38 I µP _RESET Microprocessor Reset - Logic high for a minimum of 2ms will reset the

39 VCC VCC 5V + 2%, ±50 mV ripple 40 GND GND Signal Ground

Type Signal Name

TypeType

Signal Name Function

Signal NameSignal Name

- Interface Signal Definitions

- Interface Signal Definitions - Interface Signal Definitions

Function

FunctionFunction

Mode 03 (API). Used for programming the EEPROM. Not recommended for full API Mode operation. See Section 6, Configuring the AC5124

of received signal strength while in receive mode.

accept data for transmission. See Section 4.7.1, CTS Handshaking

serial interface baud rate (9600 8-N-1)

to receive data from the transceiver. See Section 4.7.2, RTS Handshaking

The transceiver should NOT or upon a hardware reset to ensure the integrity of the EEPROM data.

transceiver. If a reset is performed after power has been applied and is stable, the reset time will decrease significantly. All other times, Pin 38 should be logic low. If Pin 38 is not connected, the microprocessor will hold Pin 38 logic low.

Section 6, Configuring the AC5124.

Section 6, Configuring the AC5124Section 6, Configuring the AC5124

Section 4.7.1, CTS Handshaking.

Section 4.7.1, CTS HandshakingSection 4.7.1, CTS Handshaking

Section 4.7.2, RTS Handshaking.

Section 4.7.2, RTS HandshakingSection 4.7.2, RTS Handshaking

NOT be write-enabled during the initial power up

NOTNOT

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

11/24/03 13

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

3.2.1

3.2.1 Received Signal Strength Indicator (RSSI)

3.2.13.2.1

The Received Signal Strength Indicator is used by the Host to determine the instantaneous signal strength at the receiver. The Host must calibrate RSSI without a signal being presented to the receiver. RSSI is invalid when a transceiver is transmitting. Calibration is accomplished by following the steps listed below to find a minimum and maximum voltage value.

Figure 1 shows approximate RSSI performance. There are two versions of receivers used by the AC5124. As of January of 2003 forward, only the New Revision receiver will be shipped. The RSSI pin of the old revision requires the Host to provide a 27kΩ pull-down to ground. No pull-down should be used with the new revision.

Received Signal Strength Indicator (RSSI)

Received Signal Strength Indicator (RSSI)Received Signal Strength Indicator (RSSI)

1) Power up only one transceiver in the coverage area.

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

3) Power up a transceiver that is the opposite type of the one measured in Step 2 (i.e. if the transceiver was a Client, power up a Server, otherwise power up a Client). Make sure the two transceivers are in close proximity and measure RSSI to obtain a maximum value at full signal strength.

Figure

Figure 1111 - RSSI Voltage vs. Received Signal Strength

Figure Figure

- RSSI Voltage vs. Received Signal Strength

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

Voltage (V)

-20

-25

-30

-35

-40

-45

-50

-55

-60

Input Power (dBm)

New Revision Old Revision

-65

-70

-75

-80

-85

-90

-95

11/24/03 14

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

3.2.2

3.2.2 In Range (IN_RANGE)

3.2.23.2.2

The IN_RANGE pin will be driven logic low when a Client is in range of a Server on the same Channel and System ID. If a Client cannot hear a Server for the amount of time that is programmed in the Range Refresh EEPROM address 32h, the Client drives the IN_RANGE pin logic high and enters a search mode looking for a Server. As soon as it detects a Server, the IN_RANGE pin will be driven logic low.

3.2.3

3.2.3 Baud Rate Selector (BDSEL)

3.2.33.2.3

The Baud Rate Selector (BDSEL) pin provides the OEM a default method of communicating with a transceiver in the event the EEPROM baud rate parameters become corrupted. If Pin 26 is logic high or not connected, the baud rate will default to that specified in EEPROM. If Pin 26 is logic low at RESET, the baud rate will default to 9600 baud.

3.2.4

3.2.4 Microprocessor Reset (µP_RESET)

3.2.43.2.4

Microprocessor Reset (µP_RESET) is achieved by holding Pin 38 at logic high for a minimum of 2ms. If µP_RESET is performed after power has been applied to a transceiver and is stable, the reset time will be significantly less. At all other times, Pin 38 should be logic low. If Pin 38 is not connected, the microprocessor will hold Pin 38 logic low.

In Range (IN_RANGE)

In Range (IN_RANGE)In Range (IN_RANGE)

Baud Rate Selector (BDSEL)

Baud Rate Selector (BDSEL)Baud Rate Selector (BDSEL)

Microprocessor Reset (µP_RESET)

Microprocessor Reset (µP_RESET) Microprocessor Reset (µP_RESET)

3.2.5

3.2.5 EEPROM Write Enable (WR_ENA)

3.2.53.2.5

EEPROM Write Enable (WR_ENA) is enabled when Pin 37 is logic low. Pin 37 must be logic low to write to the EEPROM. The OEM must ensure a transceiver is NOT write-enabled during initial power up or during a hardware RESET. Failure to do so may result in corruption of important EEPROM data.

EEPROM Write Enable (WR_ENA)

EEPROM Write Enable (WR_ENA)EEPROM Write Enable (WR_ENA)

11/24/03 15

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

LECTRICAL

3.3

3.3 EEEE

3.33.3

LECTRICAL

LECTRICAL LECTRICAL

Pin Type

Type Name

PinPin

TypeType

2 I PKTMODE 0.2Vcc + 0.9 Vcc + 0.5 -0.5 0.2Vcc - 0.1 V 16 I RXD 0.2Vcc + 0.9 Vcc + 0.5 -0.5 0.2Vcc - 0.1 V 17 I RI_IN 2 Vcc + 1 -0.5 0.8 V 22 I DCD_IN 2 Vcc + 1 -0.5 0.8 V 26 I BDSEL 0.2Vcc + 0.9 Vcc + 0.5 -0.5 0.2Vcc - 0.1 V 27 I RTS 0.2Vcc + 0.9 Vcc + 0.5 -0.5 0.2Vcc - 0.1 V 34 I DTR 2 Vcc + 1 -0.5 0.8 V 37 I WR_ENA 0.7Vcc Vcc + 1 -0.3 0.5 V 38 I

PECIFICATIONS

SSSS

PECIFICATIONSPECIFICATIONS

Table

Table 2222 - DC Input Voltage Characteristics

Table Table

Name High Min.

NameName

P_RESET 0.7Vcc Vcc + 0.5 -0.5 0.2Vcc - 0.1 V

Table

Table 3333 - DC Output Voltage Characteristics

Table Table

Pin Type

Type Name

PinPin

TypeType

11 O RSSI Analog Analog V 14 O TXD Vcc - 1.5 @ -60uA 0.45 @ 1.6mA V 15 O IN_RANGE 2.4 @ -4mA 0.45 @ 4mA V 19 O RI_OUT 2.4 @ -4mA 0.45 @ 4mA V 23 O CTS Vcc - 1.5 @ -60uA 0.45 @ 1.6mA V 32 O DSR 2.4 @ -4mA 0.45 @ 4mA V 36 O DCD_OUT 2.4 @ -4mA 0.45 @ 4mA V

- DC Input Voltage Characteristics

- DC Input Voltage Characteristics - DC Input Voltage Characteristics

High Min. High Max.

High Min.High Min.

- DC Output Voltage Characteristics

- DC Output Voltage Characteristics - DC Output Voltage Characteristics

Name High Min.

NameName

High Min. Low Max.

High Min.High Min.

High Max. Low Min.

High Max.High Max.

Low Min. Low Max.

Low Min.Low Min.

Low Max. Unit

Low Max.Low Max.

Low Max. Unit

Low Max.Low Max.

Unit

UnitUnit

Unit

UnitUnit

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AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

4. Serial Interface Modes

Serial Interface Modes

4.4.

Serial Interface ModesSerial Interface Modes

The AC5124 provides four Serial Interface Modes for interfacing to the Host, each having protocol parameters that can be programmed for maximum system optimization. Serial Interface Modes 01, 02, and 04 are referred to as Transparent Modes, indicating Host protocol is unnecessary for operation in these modes – much like a serial cable. In addition, the transceiver-to-transceiver protocol for the Transparent Modes is identical, allowing all three modes to coexist in the same network. Serial Interface Mode 03, referred to as API Mode, is not interoperable with the Transparent Modes.

ERIAL

4.1

4.1 SSSS

4.14.1

Transparent Mode 01 is the most popular interface mode because it can be used for many serial cable replacement applications that meet any or all of the following conditions:

ERIAL

ERIAL ERIAL

1) The Host always sends data packets that are the same size, allowing a transceiver to

2) The Host sends variable-sized data packets, all of which are equal to or smaller than the

NTERFACE

IIII

NTERFACE NTERFACE

take advantage of the fixed packet length option.

Fixed Packet Length. A transceiver will wait until the Interface Timeout expires or until the Fixed Packet Length size is reached. Therefore, if multiple packets and/or portions of packets are sent before the Interface Timeout expires, the receiving transceiver Host must be able to process the multiple packets and/or portions of packets.

MMMM

ODE

ODE ODE

RANSPARENT

01 – T

01 – T01 – T

RANSPARENT

RANSPARENTRANSPARENT

IXED

, F

, F, F

IXED

IXED IXED

ACKET

PPPP

ACKET ACKET

ENGTH

LLLL

ENGTHENGTH

WITH

WITH WITH

, ,

IMEOUT

TTTT

IMEOUTIMEOUT

Packets will be transmitted over the RF interface when one of the following conditions occurs:

1) The number of data bytes received over the serial interface is equal to the Fixed Packet Length specified by the OEM at EEPROM addresses 43h and 44h (43h is the MSB). The maximum packet size is 07FFh or 2KB.

2) A byte gap larger than the Interface Timeout specified by the OEM at EEPROM address 4Dh occurs. This can be set to 00h, 40h, 80h, or C0h designating 4ms, 40ms, 300ms, and 2.6s timeouts, respectively.

Any packets larger than the Fixed Packet Length will be parsed and sent consecutively by a transceiver. For example, if the Fixed Packet Length is 128 bytes and the Host sends 150 bytes, a transceiver will send 128 bytes and then 22 bytes after the timeout expires, consecutively.

ERIAL

4.2

4.2 SSSS

4.24.2

Transparent Mode 02 is useful for applications where a particular character (such as a carriage return – 0Dh) is used to signify the end of each packet. The End Character is specified by the OEM at EEPROM address 3Eh and can be set from 00h to FFh. Packets will be transmitted over the RF interface when the OEM-defined End Character is received by a transceiver. The maximum packet size is 07FFh or 2KB, including the End Character. Note that the End Character will be transmitted to the Host.

ERIAL

ERIAL ERIAL

NTERFACE

IIII

NTERFACE NTERFACE

MMMM

ODE

ODE ODE

02 – T

02 – T02 – T

RANSPARENT

RANSPARENTRANSPARENT

, E

, E, E

ND ND

HARACTER

CCCC

HARACTERHARACTER

11/24/03 17

AC5124-10 Specifications

AC5124-10 SpecificationsAC5124-10 Specifications

ERIAL

4.3

4.3 SSSS

4.34.3

API Mode is the most complex and detailed mode, where most of the control is given to the Host. This mode may seem extensive at first glance; however, it follows a specific pattern of commands and responses similar to an Ethernet protocol. The commands are grouped into two categories, System Commands and Transceiver Commands. See Section 5, API Command Set commands and definitions.

4.4

4.4 SSSS

4.44.4

In Transparent Mode 04, packets will be transmitted over the RF interface when the number of data bytes received over the serial interface is equal to the Fixed Packet Length specified by the OEM at EEPROM addresses 43h and 44h (43h is the MSB). The maximum packet size is 07FFh or 2KB. This mode of operation is recommended for applications that meet any of the following conditions:

ERIAL

ERIAL ERIAL

ERIAL

ERIAL ERIAL

1) The Host always sends data packets that are the same size.

2) The Host sends variable-sized data packets, all of which are equal to or smaller than the

NTERFACE

IIII

NTERFACE NTERFACE

NTERFACE

IIII

NTERFACE NTERFACE

Fixed Packet Length. A transceiver will wait indefinitely until the Fixed Packet Length size is reached. Therefore, multiple packets and/or portions of packets will be sent, depending on the timing and size of the packets. As a result, the receiving transceiver Host must be able to process the multiple packets and/or portions of packets.

MMMM

ODE

ODE ODE

ODE

ODE ODE

03 – API

03 – API03 – API

RANSPARENT

04 – T

04 – T04 – T

RANSPARENT

RANSPARENTRANSPARENT

Section 5, API Command Set for the full list of

Section 5, API Command SetSection 5, API Command Set

IXED

, F

, F, F

IXED

IXED IXED

ACKET

PPPP

ACKET ACKET

ENGTH

LLLL

ENGTHENGTH

, N

, N, N

O O

TTTT

IMEOUT

IMEOUTIMEOUT

ERIAL

4.5

4.5 SSSS

4.54.5

The serial interface buffer provides 8 KBytes of memory segmented into four dynamic regions. In API Mode, only one region is utilized. In all Transparent Modes, a buffer region is used each time a packet release condition is met. As an example, in Transparent Mode 02, if 500 Bytes are transmitted, including the specified End Character, 500 Bytes will be stored in the first region and the remaining 7.5 KBytes will be dynamically allocated for the next three packets. It is strongly recommended that CTS or upper layer protocol with acknowledgements be used by the OEM when operating in any of the Transparent Modes to prevent lost data. Otherwise, if all four buffers are filled and the Host continues to send data over the serial interface, the data will be discarded by the transceiver. This condition can be eliminated by using CTS.

4.6

4.6 AAAA

4.64.6

The AC5124 supports both Addressed and Broadcast Modes of communication in all Serial Interface Modes. As necessary, refer to Section 5, API Command Set 6, Configuring the AC5124

6, Configuring the AC5124 for EEPROM address definitions.

6, Configuring the AC51246, Configuring the AC5124

ERIAL

ERIAL ERIAL

DDRESSED

DDRESSED DDRESSED

NTERFACE

IIII

NTERFACE NTERFACE

& B

& B& B

UFFER

BBBB

UFFERUFFER

ROADCAST

ROADCAST ROADCAST

Section 5, API Command Set for API command definitions and Section

Section 5, API Command SetSection 5, API Command Set

OMMUNICATION

CCCC

OMMUNICATIONOMMUNICATION

Section

SectionSection

11/24/03 18

+ 39 hidden pages

AeroComm PKLR2400-200 Users Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Overview

AC5124 Specifications

Theory of Operation

Received Signal Strength Indicator (RSSI)

In Range (IN_RANGE)

Baud Rate Selector (BDSEL)

Microprocessor Reset (µP_RESET)

EEPROM Write Enable (WR_ENA)

Serial Interface Modes