low-power wlan complete 802.11b solution for chipset b literature.pdf · complete 802.11b solution...

Semiconductors

Low-power WLAN chipset

Complete 802.11b solution for mobile handheld devices

This complete, two-chip WLAN solution takes 802.11b functionality beyond desktops and laptops to enable a new generation of smaller, more mobile connected devices. Combining the single-chip SA2443 baseband/MAC and the single-chip BGW100 RF System-in-a-Package (SiP), the chipset delivers the lowest standby power consumption, the smallest form factor, and the highest integration available today.

As a complete solution optimized for battery-powered handheld devices, the

low-power 802.11b Wireless LAN (WLAN) chipset is an ideal way to add

broadband wireless capability to smartphones, cell phones, PDAs and other

portable devices operating in the 2.4 GHz band. It delivers complete 802.11b

functionality in an architecture that minimizes power consumption, reduces

board space requirements and lowers overall component count and design

cost. The chipset lets consumers connect to the growing number of WLAN

networks in offi ces, homes, and public places. It also allows service providers

to increase their network reach and customer base, enabling data and voice

handovers between cellular/PCS and WLAN networks.

Lowest standby power consumption

Several features – such as on-chip SRAM and ROM, integrated ARM7

controller and intelligent hardware and software algorithms for power

management – combine to reduce overall standby power consumption to an

absolute minimum. In addition, the MAC is designed for no load on the host

processor allowing mobile devices to integrate WLAN without compromising

application performance and battery life. In standby mode, the chipset

typically consumes only 3 mW of power.

Smallest form factor

The chipset uses advanced, in-house passive integration and packaging

techniques for an especially compact footprint. The baseband/MAC is housed

in a small 8x8 mm2 package and requires no external SRAM, while the RF

SiP uses a 10x10 mm2 package and incorporates most of the radio subsystem

components. As a result, the entire WLAN solution requires only 300 mm2

of circuit board area.

Highest integration

In the baseband/MAC, integrated memories, an on-chip ARM7 core

processor and optimized host interfaces (SDIO/SPI) reduce power

consumption and lower pin-count. The RF SiP packs more than 50

components into a single plug-and-play package, so its faster to design-in,

less expensive to produce, and has lower yield loss. As a whole, the WLAN

solution requires fewer than 30 external components, for signifi cant cost

savings and simplifi ed manufacturing.

Key features

• Advanced two-chip WLAN solution optimized for

mobile handheld devices

- Single-chip SA2443 802.11b baseband/MAC

- Single-chip BGW100 802.11b RF SiP

• Lowest standby power consumption for improved battery life

- 3 mW (typ) for entire solution in standby mode

- Advanced system architecture, integrated ARM7 controller with

associated memories and intelligent power management hardware

and software algorithms

- Media Access Controller (MAC) is designed for no load on the host

processor

• Smallest form factor for seamless integration into handheld devices

- Only 300 mm2 of circuit board area for entire solution

- SA2443: 8x8 mm2 (TFBGA-96)

- BGW100: 10x10 mm2 (HVQFN-68)

• Highest integration reduces design time, risk, and cost

- Total solution bill-of-materials is fewer than 30 components

- Plug-and-play RF SiP speeds radio design-in

- RF SiP reduces production cost and yield loss

2003-0545 WLAN_leaflet 12/4/03, 11:411

Semiconductors

Low-power WLAN chipsetComplete 802.11b solution for mobile handheld devices

SA2443 802.11b Baseband/MAC

The SA2443 is a single-chip, standalone baseband and MAC that

provides IEEE 802.11b functionality. It offers data rates up to 11 Mbps

at a range of up to 100 meters and supports DBPSK, DQPSK, and

CCK (DSSS) modulations. It integrates a 32-bit ARM7 processor and

is packaged in a space-saving TFBGA96 package that measures only

8x8x0.8 mm.

The SA2443 employs CSMA/CA media access techniques and

integrates two modems: one for Direct Sequence (DS) operation, and

one for Complementary Code Keying (CCK). An integrated scrambler/

descrambler, along with an on-chip equalizer, provides multi-path

capability at all data rates. The baseband/MAC also supports antenna

diversity.

The MAC protocol runs on an embedded ARM7 processor, for

almost zero overhead on the host processor. An instruction prefetch

unit enhances the performance of the ARM7. To support new MAC

protocol features, the SA2443 is also designed to support fi rmware

upgrades.

To reduce cost and power consumption, there is 1.25 Mb of SRAM and

256 Kb of ROM on-chip. An on-chip DC/DC converter controller can

be used to generate the core 1.8V supply voltage, and power-saving

software algorithms reduce power consumption even further.

The integrated SPI and SDIO interfaces provide a low-pin-count

connection to the host while the UART and GPIOs support general-

purpose communications. The radio interface is controlled by a three-

wire bus and there is a JTAG interface for fast, simple debugging.

Advanced hardware and software algorithms, along with Wi-Fi

Multimedia Extensions (WME), provide advanced Quality of Service

(QoS) functions. This lets the SA2443 support real-time applications

like VoIP and non-real-time applications like email and web surfi ng. The

SA2443 is also designed to support the upcoming 802.11e standard.

The SA2443 hardware and fi rmware are designed to co-exist with Philips

version 1.1 and 1.2 Bluetooth® solutions. As a result, the low-power

802.11b WLAN solution is ideal for devices that require collocated WLAN

and Bluetooth wireless functionality.

There are advanced security features, including 40- and 128-bit WEP, WPA,

CCX (Cisco Security), TKIP, and AES, and the chip is designed to support

the upcoming 802.11i extension.

Reference design software drivers support PocketPC™, Linux™, Palm™

and Symbian™ operating systems and the chipset is backed by a complete

set of software utility and diagnostic tools. Evaluation kits are also available.

BGW100 RF SiP

The BGW100 RF SiP is based on Philips’ proven, market leading SA2400

family of 802.11 radios and power amplifi er ICs. Using in-house passive

integration and packaging technology, the BGW100 combines a low-power

Zero-IF transceiver (SA2405), a linear power amplifi er (SA2411), an Rx/Tx

diversity switch, a bandpass fi lter, a balun, power supply decoupling, and

other passive components. The integrated RF transceiver uses a direct

conversion radio architecture that minimizes external components and

eliminates the IF fi lter. For additional component reduction, the integrated

PA is internally matched to the ZIF radio.

The BGW100 has a very small footprint, using an HVQFN-68 package that

measures only 10x10x1.4 mm. In addition to reducing design size, the

plug-and-play RF SiP also reduces customer design efforts, risk, time to

market, and production yield loss. (The SA2405 transceiver and SA2411 PA

are also available as separate ICs.)

2003-0545 WLAN_leaflet 12/4/03, 11:412

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Fig.1 Low-power WLAN solution for portable handheld applications

List of abbreviations

AES Advanced Encryption Standard

ICU Interrupt Control Unit

IPU Instruction Pre-fetch Unit

JTAG Joint Test Action Group

MAC Medium Access Control

PHY Physical Layer

RSSI Receive Signal Strength Indicator

SCU System Control Unit

SDIO Secure Digital Input Output

SPI Serial Peripheral Interface

WEP Wired Equivalent Privacy

2003-0545 WLAN_leaflet 12/4/03, 11:413

www.semiconductors .ph i l i p s . com

Date of release: November 2003Document order number: 9397 750 11413

Published in The Netherlands

Philips SemiconductorsPhilips Semiconductors is a worldwide company with over 100 sales offi ces in more than 50 countries. For a complete up-to-date list of our sales offi ces please e-mail [email protected] complete list will be sent to you automatically. You can also visit our website http://www.semiconductors.philips.com/sales.

© Koninklijke Philips Electronics N.V. 2003 All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Low-power WLAN chipsetComplete 802.11b solution for mobile handheld devices

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Applications• Smartphones, cellular phones, VoIP wireless phones• PDAs, handheld computing devices, WLAN adapter cards

(Secure Digital)• Portable audio/video devices, MP3 players• Other handhelds and electronic devices for wireless digital, audio,

multimedia and telephony

2003-0545 WLAN_leaflet 12/4/03, 11:414

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