BOARDCOM BCM94328

BCM4328
®
AirForce One™ SINGLE-CHIP IEEE 802.11a/b/g™
MAC/BASEBAND/RADIO WITH INTEGRATED CPU
POWER MANAGEMENT
FEATURES
• Highly integrated one-chip MAC, baseband, dual-band direct
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conversion radio and ARM7™ processor for low-power embedded
applications.
Designed to meet exacting requirements of mobile devices,
including small form factor, ultra-low power consumption, and low
cost.
Footprint-compatible with BCM4326 single-chip
IEEE 802.11b/g™ 2.4-GHz band MAC/baseband/radio with
integrated CPU.
Support for multiple interface options popular in embedded
designs: SDIO (1- and 4-bit) and USB 2.0.
Embedded ARM7 CPU that executes the full WLAN driver,
eliminating the need for complicated wireless LAN integration into
the host platform.
Portable streamlined software interface for easy migration to
embedded operating systems.
Support for advanced Bluetooth ® coexistence algorithms with
hardware interface targeted at voice and multimedia applications.
On-chip boot ROM and SRAM for a complete WLAN subsystem.
• DSP architecture reduces the power required to transmit data by
30 percent.
• Low power consumption improves battery life of Wi-Fi® devices,
including handheld devices and consumer electronics.
• Integrated CPU; designed for low CPU usage to ensure that system
resources are available for handheld applications.
• Dynamic power management through on-board PMU.
• Only a single 3.3V external supply voltage is required.
AirForce™ FEATURE SET
• SmartRadio™: continuous calibration reduces test time and
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• Internal fractional nPLL allows support for a wide range of
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• Requires only a single 3.3V external supply voltage.
• 3.3V/1.8V-tolerant I/O.
• Support for 2.5V–5.5V VBAT supplies with a single external
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reference clock frequencies.
switching regulator.
• On-chip UART and JTAG interfaces for ease of debugging.
• Available in FBGA (0.5-mm pitch) and WLCSP (0.25-mm pitch)
packages.
• Integrated power amplifier for medium-transmit power embedded
devices; interface to external power amplifier for high-power
applications.
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improves manufacturability.
Xpress™ technology: standards-based frame bursting improves
overall network efficiency.
1 2 5 Hi g h S p e e d M od e ™ : s ta n d a r d s -p l u s p e r fo rm a n c e
enhancement delivers best real-world performance when both
client and AP support high-speed mode.
Enhanced BroadRange™ technology: standards-compliant
features increase receive sensitivity to improve range and distance
performance at higher data rates.
Security:
• WPA™ (personal) and WPA2™ (personal) certified for powerful
encryption and authentication
• AES and TKIP in hardware for faster data encryption and IEEE
802.11i™ compatibility
• Cisco® Compatible Extensions (CCX, CCX2.0, CCX3.0, CCX4.0)
certified
• SecureEasySetup™ for simple Wi-Fi setup and WPA2/WPA
security configuration
Worldwide support: global products supported with worldwide
homologated design.
OneDriver™: single driver across all platforms—IEEE 802.11a/b/
g/n—simplifies driver update process and improves customer
satisfaction.
BCM94328 Sample Module
BLOCK DIAGRAM AND SPECIFICATIONS
BCM4328
WEP/AES Encryption
2.4-GHz PA
and
Front-End Circuit
IEEE 802.11 Dual-Band
(2.4-GHz/5-GHz)
Direct Conversion Radio
IEEE 802.11a/g
Baseband
MAC
Host I/F:
SDIO
or
USB 2.0
(BCM4328U)
Buffers
Host I/F
5-GHz PA
and
Front-End Circuit
Silicon Backplane
Vreg
3.3V
384-KB
SRAM
Ref Clock/Crystal:
(12, 13, 14.4, 15.36,
16.2, 16.8, 19.2, 19.8, 20,
24, 26, 38.4 MHz, 32-kHz
LPO also supported)
80-KB
ROM
SPROM, UART, JTAG, GPIO
Interfaces
ARM7
Vreg
PLL
SPROM
Interface
SDIO (4-wire, 1-wire, SPI), USB 2.0 (BCM4328U)
System Bus Support
SDIO, USB 2.0
UART
JTAG
GPIO
Standard
IEEE 802.11a, IEEE 802.11b, IEEE 802.11g
Data Rate
IEEE 802.11a/g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps; IEEE 802.11b: 11, 5.5, 2, 1 Mbps
Modulation
OFDM, CCK, DQPSK, DBPSK
Network Architectures
Infrastructure and ad hoc
Operating Frequencies
2.4 GHz to 2.497 GHz, 4.9 GHz to 5.85 GHz
Operating Channels
802.11g: 11 for North America; 13 for Europe; 14 for Japan
802.11a: 12 non-overlapping channels
RF Output Power
20 dBm maximum
Antenna Connectors
Hardware diversity support—transmit and receive
Power Requirements
3.3V (2.5V to 5.5V VBAT power supplies provided by using a single external switching regulator)
Power Consumption
Receive: < 295 mW
Transmit: < 425 mW (at 7 dBm), < 625 mW (at 15 dBm; varies depending on external power amplifier)
Security
IEEE 802.1X; WEP, WEP2, WPA (personal), WPA2 (personal); TKIP and AES hardware acceleration, IEEE 802.11i
Dimensions
FBGA: 10 mm x 10 mm
Software Support
• Windows® CE 5.0, Linux®,Windows® XP
• Portable software interface for easy migration to other embedded operating systems including Symbian, Rex, iTRON,
VxWorks®
Certifications
IEEE 802.11-compliant; Wi-Fi CERTIFIED™
For ordering information, contact your Broadcom Sales Representative.
Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, AirForce™, AirForce One™,
SecureEasySetup™, OneDriver™, BroadRange™, SmartRadio™, 125 High Speed Mode™, and Xpress™ are among the
trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries and/or the EU. Bluetooth® is a
trademark of the Bluetooth SIG. Any other trademarks or trade names mentioned are the property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
4328-PB02-R
12/05/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com