Symbol Technologies LA5127A2 User Manual

REVISION HISTORY

REV	DESCRIPTION	DATE	APPROVED
2.1	Original Draft - MZ	March 23,
		2007
2.2	Comments from Regulatory	July 12,2007

THE INFORMATION IN THIS GUIDE IS PROVIDED "AS IS" WITHOUT ANY EXPRESS OR IMPLIED WARRANTY OF ANY KIND INCLUDING WARRANTIES OF

MERCHANTABILITY, NONINFRINGEMENT OF INTELLECTUAL PROPERTY, OR

FITNESS FOR ANY PARTICULAR PURPOSE. IN NO EVENT SHALL SYMBOL BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, LOSS OF INFORMATION) ARISING OUT OF THE USE OF OR INABILITY TO USE THE

INFORMATION IN THIS GUIDE, EVEN IF SYMBOL HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME JURISDICTIONS PROHIBIT THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE ABOVE LIMITATION MAY NOT APPLY TO YOU. Symbol further does not warrant the accuracy or completeness of the information, text, graphics, or other items contained within this Guide. Symbol may make changes to this

Guide, or to the products and/or Software described therein, at any time without notice.

Symbol makes no commitment to update the Information

LA-5127 Integration Guide

LA-5127 Integration Guide
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			Table of Contents
1.	INTRODUCTION			4
	1.1	BACKGROUND		4
	1.2	PURPOSE		4
	1.3	PART NUMBERS		4
	1.4	KEY FEATURES AND STANDARDS SUPPORTED		4
	1.5	USER PROFILES		5
2.	ARCHITECTURE			6
	2.1	SYSTEM ARCHITECTURE		6
	2.2	HARDWARE ENVIRONMENT		7
	2.2.1		Introduction	7
	2.2.2		Card Dimensions	7
	2.2.3		Card Physical	7
	2.2.4		Antenna Connectors (non-embedded antenna version)	8
	2.2.5		Antenna Requirements	8
	2.2.6		TX & RX Diversity	8
	2.2.7		Operating Channels	8
	2.2.8		Electrical Interface	9
	2.2.9		Bluetooth Coexistence and Wake-on-WLAN	9
3.	DESIGN OVERVIEW			9
	3.1	TRANSMITTER PATH		10
	3.2	RECEIVE PATH		10
	3.3	MICROPROCESSOR CONTROL		10
	3.4	FREQUENCY GENERATION		11
4.	RF SIGNAL PERFORMANCE			11
	4.1	SPECIFICATIONS		11
	4.2	I/O SIGNALS		12
5.	PRODUCT POWER REQUIREMENTS			14
6.	LINUX SOFTWARE SUPPORT			14
	6.1	LINUX PREREQUISITES		14
	6.2	LA 5127 LINUX SOFTWARE COMPONENTS		14
	6.3	LINUX SOFTWARE INSTALLATION		15
	6.4	LINUX CARD CONFIGURATION		16
7.	WINCE SOFTWARE SUPPORT			16
	7.1	WINCE DRIVER INSTALLATION:		16
	7.2	WINCE CARD CONFIGURATION:		17
	7.3	WINCE REGULATORY SUPPORT SOFTWARE		17
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8.	ANTENNA REQUIREMENTS FOR THE EXTERNAL ANTENNA VERSION		18
9.	REGULATORY		19
	9.1	FINAL PRODUCT COMPLIANCE	19
	9.2	REFERENCE ANTENNA (APPLICABLE TO CONNECTOR VERSION CARD)	21
	9.3	REGULATORY STANDARDS	22
	9.4	REGULATORY APPROVALS	22

9.4.1		Initial Release	22
9.5	RADIO CARD REGULATORY MARKINGS		23
9.6	NATIONAL COUNTRY REQUIREMENTS		23
9.6.1		United States of America	23
9.6.2		Canada	24
9.6.3		European Union	26
9.6.4		Japan	27
9.6.5		Australia	27
9.7	STATEMENTS REQUIRED FOR THE USER GUIDE		29
9.7.1		General Statements	29
9.7.2		FCC Statements	29
9.7.3		Industry Canada Statements	30
9.7.4		European Statements	32
	MARKING AND EUROPEAN ECONOMIC AREA (EEA)		32
Restrictions for use			32
Statement of Compliance (embedded radio card, Model: LA-5127C2 / LA-5127A2 )
			32
10.	RELIABILITY		32
11.	RECOMMENDED DESIGN CONSIDERATIONS		33
12.	APPENDIX 1: EVM DEGRADATION VS. ANTENNA VSWR		33
13.	APPENDIX 2: PRODUCT MECHANICAL INTERFACE DRAWING		34

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1. Introduction

1.1 Background

LA-5127 is the next generation CF client card for embedded solutions and is intended for OEM customers.

1.2 Purpose

The purpose of this document is to define the functional characteristics (electrical, mechanical, software interfaces) of the LA-5127 CF Card and provide regulatory information helpful to OEM customers to integrate or embed the CF card in a variety of systems. A section outlining Good Design Practices is also incorporated to help with the overall integration of the device.

1.3 Part Numbers

LA-5127 CF card will come in two SKUs:

Part Number	SKU
LA-5127-1002	External Antenna Version
LA-5127-1020	Internal Antenna Version

1.4 Key Features and Standards supported

LA-5127 CF Card supports all required modes of operation as an 802.11g Mobile

Unit (MU). In 802.11g mode, the radio supports three different modulation modes: Legacy 1 and 2Mbps, Complimentary Code Keying (CCK), and Orthogonal Frequency Division Multiplexing (OFDM). The radio supports the following 12 data rates in 802.11b/g mode:

	Data Rate (Mbps)	Modulation
	1	DBPSK
	2	DQPSK
	5.5	CCK
	6	OFDM with BPSK Carrier Modulation
	9	OFDM with BPSK Carrier Modulation
	11	CCK
	12	OFDM with QPSK Carrier Modulation
	18	OFDM with QPSK Carrier Modulation
	24	OFDM with 16QAM Carrier Modulation
	36	OFDM with 16QAM Carrier Modulation

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	48	OFDM with 64QAM Carrier Modulation
	54	OFDM with 64QAM Carrier Modulation

LA-5127 CF Card supports station operation in Continuous Aware Mode (CAM) and Fast Power-Save and Max Power-Save modes.

Other features and standards supported:

•802.11b/g

•802.11d

•Robust roaming and dynamic rate switching

•Range up to 300 ft./91m in standard office environments

•Data security using WEP data encryption and Wireless Protected Access (WPA) and 802.11i (WPA2) with advance encryption standard (AES)

•Advance authentication using 802.1x

•Advanced Power Management for very low power consumption

•16 bit host interface using CF mode (16-bit PC-Card® Interface)

•Driver/Firmware supports Linux 2.4 and Windows CE Embedded 5.0

1.5User Profiles

•The LA-5127 product is optimized for embedded, mobile enterprise and industrial applications where security, feature and technical service are required.

•Mobile workers in healthcare, education, retail, manufacturing, hospitality and other industries with 802.11b, and 802.11g wireless LAN access.

•Corporate Symbol device users with Wi-Fi wireless LAN access at the office, or with a subscription to a public wireless LAN.

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2. Architecture

2.1 System Architecture

Figure 1 depicts the top-level architecture of the LA-5127 CF card.

SDRAM

I/F Host CF

To Antenna

(Antenna Version)

RF Baseband & MAC 2.4GHz FEM

Transceiver

To RF Connectors

(Connector Version)

EEPROM 32.768Khz 40Mhz

Clock Clock

Figure 1

As shown, LA-5127 CF card consists of all of the integrated circuits necessary to provide WLAN transceiver functionality for 2.4GHz band. The Wireless LAN integrated Media Access Controller with Baseband processor directly interfaces with the Dual Band Direct Conversion transceiver. With the addition of RF Frontend Module (FEM), LA-5127 CF card incorporates the WLAN chip set solution compliant with 802.11b/g standards.

The 40MHz crystal controlled clock provides the necessary clocks for both the PLL and the baseband & MAC chip. The SDRAM provides additional memory to support SHoC (Self Hosted Client) operation. Not shown in the figure are the necessary voltage regulators that provide various supply voltages for the chips. The regulators require 3.3V input supply.

The EEPROM is used to hold radio information including radio calibration information done at the automatic manufacturing test step.

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2.2 Hardware Environment

2.2.1 Introduction

LA-5127 CF card can be used in handheld mobile devices to provide wireless network access. LA-5127 communicates using Radio Frequencies (RF) between two or more users or between a user and the wired network. The module implements the IEEE802.11g physical (RF) specification. The chipset used provides for modulation, demodulation, spreading and despreading of the RF signals.

2.2.2 Card Dimensions

LA-5127 is a modified type I CFA card. See Appendix 2 for Mechanical Interface Drawing.

2.2.3 Card Physical

2.2.3.1 Operational Environment

(Note: The product is not required to be powered during test activities. Only parameters marked by an * shall be powered during testing. Testing per Symbol Qualification Test Standard SS-03800-74.)

•0 to +55 degrees C max operating* (card installed environment)

•95% RH non-condensing*

•Altitude to withstand 8,000 ft @ 28 degrees Celsius*

•Vibration to withstand .02g2/Hz, random, sine, 20-2k Hz

•Bench drop 36 inches to concrete @ -20, 23, 50 degrees Celsius

•Mechanical shock to withstand 50 G peak, 11 ms, half sine

•Card bend to withstand 4.4lbs, 1 min, per PCMCIA STD 3.6.2.14

•Card torque to withstand 11 in.-lbs., per PCMCIA STD 3.6.2.16

•No water/rain/insect resistance (Damp cloth cleaning OK)

•No chemical resistance (Light cleaning solutions OK)

•Loose cargo/packaged to withstand 6 foot drop

•ESD to withstand 1.5KV contact per PCMCIA/CF Specification

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2.2.3.2Storage Environment

•-20 to +65 degrees C temperature range

•95% RH non-condensing humidity

•Altitude to withstand 15,000 ft

2.2.4 Antenna Connectors (non-embedded antenna version)

LA-5127-1002 CF card (External Antenna Version) supports 2 RF connectors (Hirose U.FL-R-SMT, or equivalent). The antennas can be attached to the card through the connectors. There are two connectors on the LA-5127-1002 unit.

Note on sharing antennas: Antenna sharing with other radio modules is not supported on LA-5127 with other radio modules.

2.2.5 Antenna Requirements

For detailed antenna requirements please refer to section 8.1.3.

Regulatory Note: Many country regulations require special testing and reporting of antenna performance or of the system with the antenna attached. Please check the appropriate regulatory authority or contact Symbol for more information.

2.2.6 TX & RX Diversity

TX & RX Diversity is only supported on the connector version of the LA-5127 (LA-5127-1002).

2.2.7 Operating Channels

	Channel	Channel	Countries
	Number	Frequency
		(MHz)
	1	2412	USA, Canada, EU, Japan
	2	2417	USA, Canada, EU, Japan
	3	2422	USA, Canada, EU, Japan
	4	2427	USA, Canada, EU, Japan
	5	2432	USA, Canada, EU, Japan
	6	2437	USA, Canada, EU, Japan
	7	2442	USA, Canada, EU, Japan
	8	2447	USA, Canada, EU, Japan
	9	2452	USA, Canada, EU, Japan
	10	2457	USA, Canada, EU, Japan

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11	2462	USA, Canada, EU, Japan
12	2467	EU, Japan
13	2472	EU, Japan
14	2484	Japan

Table 1. IEEE 802.11g Channels

2.2.8 Electrical Interface

The electrical interface for LA-5127 is PC16. The chipset used supports this interface; therefore no external component is required. The host must support the PC16 interface as well. The card uses only the 16-bit interface.

2.2.9 Bluetooth Coexistence and Wake-on-WLAN

LA-5127 hardware is being designed to support these features for future software implementation. AT THIS TIME THESE FEATURES ARE NOT SUPPORTED BY

THE SOFTWARE.

Three GPIO pins have been assigned to support the BT Coexistence. The following is the assignment to support the BT Coexistence with Broadcom’s

BCM2045 BT module:

GPIO 2-3: BT0 (Tx Config) (Connected to pin A10 on CF interface) GPIO 2-4: BT1 (Status) (Connected to pin CSEL on CF interface) GPIO 2-5: BT2 (RF Active) (Connected to pin SPKR on CF interface)

The following GPIO signal is also available for Wake-on-WLAN functionality:

GPIO 2-11: WOL (Connected to STSCHG on CF interface)

3. Design Overview

The chipset used implements a dual band direct conversion transceiver supporting 2.4GHz band. The chipset uses “Zero Intermediate Frequency (ZIF) architecture for the radio. The architecture contains low-noise amplifiers, quad up/down converters, frequency synthesizers, low-pass filters, baseband AGC receiver amplifiers, transmit/receive switches, and transmitter power amplifiers.

LA-5127 CF card Integration Guide

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The 802.11 WLAN MAC protocol is implemented in firmware supporting BSS and IBSS operation. Low-level protocol functions such as request to send (RTS)/clear to send (CTS) generation and acknowledgement, fragmentation and defragmentation, and automatic beacon monitoring are handled without host intervention.

3.1 Transmitter Path

After the Medium Access Controller (MAC) receives the data from the host computer through CF interface, the MAC appends a preamble and header and sends the data to the Base-Band Processor (BBP).

The radio supports the legacy and CCK data rates in 2.4GHz and the OFDM data modulation modes for 2.4GHz band.

The CCK mode transmitter is a Direct Sequence Spread Spectrum (DSSS) PSK modulator when in CCK mode supporting 5.5Mbps and 11Mbps. It also supports DBPSK for 1Mbps and DQPSK for 2Mbps. The preamble is always transmitted as the DBPSK waveform and the header can be configured as DBPSK or

DQPSK while the data packets can be DBPSK, DQPSK, or CCK.

The OFDM transmitter supports BPSK, QPSK, 16QAM or 64QAM modulation. The OFDM transmitter operates in 2.4GHz band providing 6, 9, 12, 18, 24, 36, 48, and 54Mbps data rates. The OFDM signal is fed to a pair of Digital to Analog

Converters (DACs) to produce the In Phase (I) and the Quadrature (Q) signals.

The TX signals are then amplified by the PA and routed through the diplexer to the dual band antenna for transmission.

3.2 Receive Path

The received signal from the antenna is fed to the diplexer, which separates the signal path for the low band (2.4GHz) and the high band (5.2GHz). The signal is then fed to a filter/balun in the low band and to a balun in the high band path. The signal then goes to the transceiver chip for direct down conversion for both low and high bands. The design contains LNAs, Quad Up/Down Converters, Synthesizers, Low-Pass Filters, and Baseband AGC Receiver Amplifiers.

3.3 Microprocessor Control

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The baseband and MAC chip contains an ARM946E processor core and the

SRAM required for implementing the Media Access Control (MAC) functionality. The embedded firmware runs the 802.11 MAC layer control. The MAC control sends and receives packets and transfers data to and from the CF interface to the host computer of the handheld device.

3.4 Frequency Generation

The MAC & Baseband chip has the voltage-controlled oscillator (VCO) required for the design. The VCO operates in one of the two ranges: 9648 to 9936MHz (4X channel frequency for low-band) or 9900 to 11,800MHz (2X channel frequency for high band). The Synthesizer circuit uses the 40MHz crystal oscillator to phase lock the VCO to produce accurate channel frequency for the radio. The frequency range in the low-band is covered in two MHz steps (1MHz at the channel frequency) and in the high-band the LO frequency is covered in five MHz steps (2.5MHz at the channel frequency).

4. RF Signal Performance

4.1 Specifications

Unless otherwise stated the following specifications hold over 0C to +55C, and 3.3V +/- 5%. This environment is defined as the specific temperature envelope containing the LA-5127 radio product. If embedded within a host product, this envelope is the internal ambient temperature of the host under the hosts operating conditions.

	Description	Typ	Max	Unit	Comments
	Functional
	Continuous Transmit Current	481	580	mA
	(OFDM 54Mbps)
	Continuous Transmit Current	501	600	mA
	(CCK/DS 11Mbps)
	Continuous Receive Current	281	340	mA
	(OFDM 54Mbps)
	Continuous Receive Current	281	340	mA
	(CCK/DS 11Mbps)
	Continuous Ping (10,000 size) TX	328	390	mA
	54Mbps
	Continuous Ping (10,000 size) RX	304	370	mA
	54Mbps
	Max in-rush current	165	200	mA
	Supply Voltage	3.13	3.47	Volts
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		Receiver (“Legacy” 802.11b mode):
		Sensitivity, 11 Mbps		-79	-10		8% PER 1024 Octets
		Sensitivity, 5.5 Mbps		-82	-10	dBm
		Sensitivity, 2 Mbps		-83	-10		0C to 55C
		Sensitivity, 1 Mbps		-86	-10
		Transmitter (“Legacy” 802.11b	mode):
		Power Level, 0C to +55C		12	16	dBm	RF Power will have the appropriate
							back-off to meet the regulatory
							requirements at the band edges.
		Receiver (802.11g OFDM mode):
		Sensitivity, 54 Mbps		-65	-15
		Sensitivity, 48 Mbps		-66	-15
		Sensitivity, 36 Mbps		-70	-15		10% PER for 1000 bytes
		Sensitivity, 24 Mbps		-74	-15	dBm
		Sensitivity, 18 Mbps		-77	-15		0C to +55C
		Sensitivity, 12 Mbps		-79	-15
		Sensitivity, 9 Mbps		-81	-15
		Sensitivity, 6 Mbps		-82	-15
		Transmitter (802.11g OFDM mode):
		Power Level, 54Mbps		10	12		Power output measured at relative
		Power Level, 48Mbps		10	12		constellation error specifications.
		Power Level, 36Mbps		11	13		IEEE 802.11g, 17.3.9.6.3
		Power Level, 24Mbps		11	13	dBm	0C to +55C
		Power Level, 18Mbps		12	15		RF Power will have the appropriate
		Power Level, 12Mbps		12	15
		Power Level, 9Mbps		13	16		back-off to meet the regulatory
		Power Level, 6Mbps		13	16		requirements at the band edges.

4.2 I/O Signals

The following table describes the I/O signals for I/O mode operation:

	Pin #		Signal Name		Pin Type
	1		GND		DC In
	2		D03		I/O
	3		D04		I/O
	4		D05		I/O
	5		D06		I/O
	6		D07		I/O
	7		CE1J		I
	8		A10		I
	9		OEJ		I
	10		A09		I
	11		A08		I
	12		A07		I
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