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L-WL60040中文资料

L-WL60040中文资料
L-WL60040中文资料

WaveLAN? 802.11a/b/g Chip Set

Product Brief February 2003

Features

! Low-cost, highly integrated solution for IEEE?802.11a/b/g wireless LAN (WLAN) client and

infrastructure products:

― WL60040 multimode media access controller (MAC).

― WL64040 multimode baseband processor.

― WL54040 dual-band transceiver.

― WL54240 dual-band power amplifier (PA).

! Data rate:

― OFDM modulation/demodulation

6/9/12/18/24/36/48/54 Mbits/s rate for IEEE

802.11a and g modes.

― CCK, DBPSK, DQPSK 1/2/5.5/11 Mbits/s rate for IEEE 802.11b mode.

! Chip set capabilities:

― "Supports both multimode and 802.11g-only implementations.

― Supports draft 802.11h dynamic frequency selection (DFS) for spectrum management and

transmit power control (TFC).

― Quality of service (QoS, draft 802.11e).

― Draft 802.11i security: AES-CCM, WPA (SSN-TKIP), 64-bit/128-bit WEP.

― Active and passive scanning (802.11d).

―Wi-Fi? and Bluetooth? collaborative

coexistence support.

― Support for 802.11g OFDM modulation.

― Firmware-based architecture offers flexibility and quick addition of new features.

― Low CPU utilization through scatter gather bus-mastering DMA architecture.

― Automatic power management for reduced power consumption and extended battery life. ! RF capabilities:

― Direct-modulation transmitter and low IF receiver architecture with no external IF, SAW,

or baseband filters.

― Linear output power (P1dB):up to 24 dBm in

2.4 GHz band and 20 dBm in 5 GHz band.

! Support for PCI 2.3, 32-bit CardBus, USB 1.1, 16-bit PC Card and Compact Flash+ host interfaces. WaveLAN Product Family

The WaveLAN product family consists of low-cost, high-performance chip sets, PHY modules, and reference designs optimized for client (STA), access point (AP), and embedded Wi-Fi applications. The WaveLAN products are designed to meet the growing need for Wi-Fi products tailored to specific applications and will continue to evolve as additional standards are deployed.

WaveLAN 802.11a/b/g Chip Set Description

The WaveLAN 802.11a/b/g chip set is the newest addition to the WaveLAN chip set family and is specifically designed to address the proliferation of Wi-Fi technology into various applications segments. The WaveLAN 802.11a/b/g chip set leverages the strengths and proven performance of the deployed and proven Agere Systems WL60040/N4080/

W4050 802.11b MAC/baseband/radio subsystem and introduces a highly integrated high-speed WLAN chip set with a rich set of features aimed at varied, high performance, cost-sensitive applications.

The chip set supports Microsoft? Windows?XP?Professional and Home Editions, Windows 2000 and Millennium, Windows 98, Windows CE and https://www.sodocs.net/doc/ab6609265.html,, Linux?, and VxWorks? operating systems. Applications

! IEEE 802.11a/b/g wireless LAN client cards for notebook, desktop PCs, and PDAs

! Enterprise and home wireless LAN access points ! High-speed wireless bridges

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Product Brief WaveLAN 802.11a/b/g Chip Set February 2003

Agere Systems Inc.

2

Functional Description

WaveLAN 802.11a/b/g Chip Set Block Diagram

The block diagram in Figure 1 shows the WaveLAN 802.11a/b/g chip set in a client or infrastructure

application. The block diagram illustrates a system solution in a truedual-band multimode WLAN environment. This solution is highly integrated, with fewer than 100 standard components needed for WLAN systems. This system operates at 3.3 V. An external EEPROM is used to store the calibration and production attributes. A 40 MHz crystal is connected to the WL64040. Depending on the application, either the WL60040 can derive its clock from the WL64040 clock output, generated by an on-chip highly stable low-current tuneable crystal oscillator, or an external crystal oscillator device has to drive both the WL60040 and WL64040. Dedicated signal lines control the switching of the PA, the transmit/receive (T/R) and antenna diversity switches, and the transceiver operating frequency.

Figure 1. WaveLAN 802.11a/b/g Chip Set Block Diagram

The WL60040 MAC connects to the WL64040 baseband processor through a multipin MMI/MDI interface and with the host processor via a plurality of host interfaces. The WL64040 baseband chip processes the OFDM and CCK modulated signals. This chip has a serial three-wire control interface and an analog RX/TX IQ-interface that interfaces to the integrated dual-band RF-transceiver (WL54040). The WL54040 transceiver has an integrated programmable gain amplifier transmitter, ZIF architecture receiver for CCK and low IF for OFDM (thereby providing seamless mode switching between DSSS/CCK and OFDM reception), two integrated

voltage regulators, and a synthesizer with integrated VCO, PLL, and 40 MHz crystal oscillator. The WL54240 is a dual-band PA, combining the functionality of two devices into one package, thereby minimizing board space and the bill of material costs of the system. The integrated PA features 1 dB output power compression points of 24 dBm for 802.11g and 20 dBm for 802.11a.

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Product Brief February 2003

WaveLAN 802.11a/b/g Chip Set

Agere Systems Inc

3

Functional Description (continued)

Table 1. Component Descriptions Chip Number

Chip Name

Description

WL60040 Multimode Media Access Controller

This implements 802.11a/b/g MAC functionality. It offers a rich set of

exposed interfaces intended to provide flexibility to the system designer in

multiple host interface applications. A scatter gather bus-mastering engine is included in PCI and CardBus mode to support efficient data transfers from the device to and from system memory. This mechanism decreases the CPU load by offloading buffer access to the bus master engine. This chip also has hardware accelerators for WEP and AES engines and offers a glueless interface to multiple baseband processor chips through the MDI/MMI pins. WL64040 Multimode Baseband

Processor

This provides complete modem functionality for an 802.11a/g/b wireless LAN

chip set. It contains signal-processing functionality for both the DSSS/CCK and the OFDM modulation/demodulation. The chip provides a baseband interface to the WL54040 dual-transceiver chip as well as a digital interface to the MAC, the WL54040 dual-band RF transceiver, and the antenna

switches. Antenna diversity is also supported. The PHY chip also controls the bias for the PA. The bias determines the gain of the PA, the maximum output power, and the power consumption. WL54040 Dual-Band RF Transceiver This performs the frequency translation between RF and the baseband signal

and provides direct modulation transmitter with programmable output power.

It includes differential modulators, integral channel filters, programmable gain amplifiers (PGAs), received-signal strength indicators (RSSI), and the RF interface. It also provides a three-wire bus control interface to the WL64040 baseband chip. WL54240 Dual-Band Power Amplifier This amplifies the RF signal for transmission. The device includes gain

stages, interstage matching, and power detection for the 2.4 GHz and 5 GHz bands.

WaveLAN Chip Set: Firmware

The WaveLAN chip set supports a firmware-based architecture for complete flexibility in implementing and

adding new features.

In the WaveLAN client products, the firmware is downloaded by the driver into the on-chip RAM of the WL60040, eliminating the need for an external ROM or Flash memory. In access point and other diskless embedded designs that may require external memory, the WL60040 external memory interface provides support for an optional external ROM.

The WaveLAN firmware implements the full IEEE 802.11a/b/g wireless LAN MAC protocol. It supports BSS (basic service set) and IBSS (independent basis service set) operation under the DCF (distributed control function). Low-level protocol functions such as RTS/CTS, acknowledgement, fragmentation,

defragmentation, and automatic beacon monitoring are handled by the WaveLAN chip set without host intervention. Passive or active scanning is performed autonomously once initiated by host command. Host interface command and status handshakes allow concurrent operations from multi-threaded I/O drivers. Firmware features include the following:

! Dynamic frequency selection and power control (IEEE draft 802.11h). ! Hardware AES CCM mode (software-managed hardware). ! Support for WEP encryption engine (software-managed hardware). ! Additional security features according to draft 802.11i.

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Product Brief WaveLAN 802.11a/b/g Chip Set February 2003

Agere Systems Inc.

4

Functional Description (continued)

! Support for RC4 encryption.

! Antenna diversity and selection (software-managed hardware).

! 802.11-compliant power management and enhanced power management. ! Support for 802.11 compliant IBSS networks. ! Support for 802.11 compliant AP functions. ! Support for 802.1x.

! Fallback rate algorithm that sets the optimum transmission rate based on actual signal-to-noise ratio and

packet-loss information.

! Support for seamless roaming between access points.

! Support for Wake-on-LAN using Magic Packet ? and pattern matching. ! Support for WPA.

! Multiple queue management in support of emerging QoS initiatives within draft 802.11e.

Performance

The performance of the WaveLAN 802.11a/b/g chip set is shown in Table 2. The power consumption is shown in Table 3.

Table 2. Performance Data Estimated Range (m) Data Rate Modulation Sensitivity (dBm)

Open Office

Open Field

1 Mbit/s DBPSK (2.4 band) –93 106 777 6 Mbits/s

OFDM (2.4 band)

(5 band)

–85 –86 81 41 309 161 11 Mbits/s CCK

–85 61 309 54 Mbits/s 0FDM (2.4 band)

(5 band)

–73 –70

26 11

78 18

Table 3. Estimated Power Consumption

Transmit Active Power Receive Active Power

Standard mA

mW (at 3.3 V)

mA mW (at 3.3 V)

802.11b 301 992 203 668 802.11g 358 1181 263 885 802.11a 428

1412

288

951

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Product Brief February 2003

WaveLAN 802.11a/b/g Chip Set

Agere Systems Inc 5

WaveLAN Chip Set: Radio Requirements

The chip set complies with the following major radio standards applicable for DSSS and OFDM and will be certified accordingly.

Country Regulatory

2.4 GHz Frequency Bands

5 GHz Frequency Bands USA FCC 2.4—2.4835 5.15—5.25, 5.25—5.35, 5.725—5.825 Canada

RSS

2.4—2.4835

5.15—5.25, 5.25—5.35, 5.725—5.825

Europe EN 2.4—2.4835 5.15—5.35, 5.47—5.725, 5.725—5.875

Japan ARIB

2.4—2.497

5.15—5.25

Reference Designs

The WaveLAN chip set is supported by a complete family of production-ready reference designs

accompanied by schematics, Gerber files, BOMs, radio calibration procedures, and manufacturing test

guidelines that are included in the design support package. Current reference designs include Mini PCI and 32-bit CardBus.

Package Information

! WL60040 MAC: 196-pin FSBGA. ! WL64040 baseband: 81-pin P-LFBGA. ! WL54040 RF: 48-pin VQFN. ! WL54240 PA: 24-pin mini-VQFN.

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For additional information, contact your Agere Systems Account Manager or the following: INTERNET: https://www.sodocs.net/doc/ab6609265.html, E-MAIL: docmaster@https://www.sodocs.net/doc/ab6609265.html,

N. AMERICA: Agere Systems Inc., Lehigh Valley Central Campus, Room 10A-301C, 1110 American Parkway NE, Allentown, PA 18109-9138 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 755-25881122 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 6778-8833, TAIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 1344 296 400

Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Agere, Agere Systems, and the Agere logo are trademarks of Agere Systems Inc. WaveLAN is a trademark of Agere Systems inc.

Copyright ? 2003 Agere Systems Inc.

All Rights Reserved

February 2003

PB03-044WFC

Bluetooth is a trademark of Bluetooth SIG, Inc.

IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc. Linux is a trademark of Linux Technology Ltd.

Magic Packet is a registered trademark of Advanced Micro Devices, Inc.

Microsoft, MS-DOS, and Windows are registered trademarks of Microsoft Corporation. Windows XP is a trademark of Microsoft Corporation.

VxWorks is a registered trademark of Wind River Systems, Inc.

Wi-Fi is a trademark of Wireless Ethernet Compatibility Alliance, Inc.

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