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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 sales.addresses@www.semiconductors.philips.com.A 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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