BCM4325
®
Brief
FEATURES
•
Bluetooth Key Features
•
Bluetooth Specification version 2.1 + EDR (up to 3 Mbps)
compliant, with provisions for supporting future specifications
•
Supports extended synchronous connections (eSCO) for
enhanced voice quality by allowing for retransmission of
dropped packets
•
Adaptive frequency hopping (AFH), for reducing radio
frequency interference.
•
Interfaces support—Host controller interface (HCI) using a
high-speed UART interface and PCM for audio data
•
The FM unit supports BSC (Broadcom Serial Control) for
communications, stereo analog output, as well as I²S and
PCM interfaces.
•
Integrates the InConcert™ collaborative WLAN coexistence,
including the 802.15.2 three-wire coexistence support
•
Low-power consumption improves battery life of handheld
devices
•
76-MHz to 108-MHz FM bands and supports European Radio
Data Systems (RDS) and North American Radio Broadcast
Data Systems (RBDS) modulations
•
Supports dual-A2DP for stereo sound
•
Automatic frequency detection for standard crystal and TCXO
values
SINGLE CHIP IEEE 802.11a/b/g MAC/BASEBAND/RADIO WITH INTEGRATED
BLUETOOTH
®
2.1 + EDR AND FM RECEIVER FOR LOW-POWER MOBILE HANDSET
AND HANDHELD APPLICATIONS
FEATURES
•
WLAN Key Features
•
Single-band 2.4-GHz 802.11b/g or dual-band 2.4-GHz and 5-
GHz 802.11a/b/g with Bluetooth 2.1 + EDR and FM receiver
•
Industry leading low-active transmit and receive power
consumption and ultra-low power in stand-by and idle modes
•
Supports IEEE 802.11d/e (WMM, QoS, WMM-PS), h, i, j
(upgrades available for k, r, w)
•
Supports IEEE 802.15.2 external three wire coexistence
scheme to support additional wireless technologies such as
GPS, WiMax, or UWB
•
Supports standard interfaces, SDIO v1.2 (1 bit and 4 bit), SPI,
and high speed UART, for easy migration from the Broadcom
2 chip solution (BCM4328 + BCM2048)
•
Integrated CPU with on-chip memory for a complete WLAN
subsystem minimizing the need to wake up the applications
processor
•
Fractional nPLL allows support for a wide range of reference
clock frequencies
•
Security:
- WPA- and WPA2 (personal) for powerful encryption and
authentication
- AES and TKIP in hardware for faster data encryption and
802.11i compatibility
- Supports Cisco
®
Compatible Extensions (CCX - CCX4.0)
- SecureEasySetup™ for simple Wi-Fi setup and WPA2/
WPA security configuration
•
Worldwide regulatory support—Global products supported
with worldwide homologated design
•
General Features
•
One driver software architecture for easy migration from
existing embedded WLAN and Bluetooth devices as well as
future devices
•
Support battery voltage range from 2.3V to 5.5V supplies with
the internal switching regulator
OVERVIEW
BCM4325H
IEEE 802.11a/b/g
BCM4325G
5 GHz
WL Tx
WL Tx
WL Rx
WEP/AES/TKIP
5 GHz &
2.4 GHz
Baseband
MAC
PHY
Direct
Conversion
Radio
WL Tx
WL Tx
FEM
Switch
IEEE 802.11b/g
RAM
SDIO/SPI
Host
I/F
UART
JTAG
ROM
FEM
3T Switch
CPU
WL Rx
Ref Clocks
12-52 MHz
Crystal OSC
WL
Packet Traffic Arbiter
Enhanced Coexistence
BT
Control Logic
Block
FM Receiver
External FEM
(PA/Switch) for
High Power Applications
PMU
RAM
Vbatt
Vdd IO/Core
Switching
Regulator
Host
I/F
LDO
CPU
32 KHz
Clock
LPO
ROM
Bluetooth
®
2.1 + EDR
2.4 GHz
Modem
Direct
Conversion
Radio
BT Rx
BT Tx
UART
I
2
C I
2
S/PCM
SPROM
BCM4325 Block Diagram
The Broadcom BCM4325 family of single-chip devices provides for the
the requirements of most handheld systems while permitting an external
highest level of integration for a mobile or handheld wireless system,
power amplifier for high-power applications.
with integrated IEEE 802.11a/b/g (MAC/Baseband/Radio), Bluetooth
2.1 + enhanced data rate (EDR), and FM receiver. Thus providing a
BCM4325 Specifications
compact small form factor solution with minimal external components to
Host Interface
SDIO (4 wire, 1 wire, SPI), UART
drive the costs for mass volumes and allows for flexibility in size, form,
Standard
IEEE 802.11a, IEEE 802.11g
and function of handheld devices. The BCM4325 is designed to address
Data Rate
802.11a/g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps; 802.11b: 11, 5.5, 2, 1
the needs of highly mobile devices that require minimal power
Mbps
consumption and reliable operation.
Modulation
OFDM, CCK, DQPSK, DBPSK
Infrastructure and ad hoc
2.4 GHz–2.497 GHz, 4.9 GHz–5.85 GHz
11 for North America; 13 for Europe; 14 for Japan
802.1x; WEP, WEP2, WPA, WPA2 (Personal); TKIP and AES
hardware acceleration, 802.11i
The BCM4325 utilizes advanced design techniques and process
technology to deliver the lowest active and idle power, extending the
system battery life while maintaining consistent connectivity, and still
provides a rich set of features.
The BCM4325 implements the highly sophisticated InConcert radio
coexistence algorithms and hardware mechanisms allowing for an
extremely collaborative coexistence scheme along with coexistence
support for external radios (such as GPS, WiMax, or Ultra Wide-Band
radio technologies, as well as cellular radios) and a single shared
Antenna. As a result, it enhances the overall quality for simultaneous
voice, video, and data transmission on a handheld system while
minimizing the footprint.
The BCM4325 further integrates a power management unit simplifying
the power topology on a system and allowing for operation directly from
the handheld battery. It also integrates a CMOS power amplifier to meet
Network
Architectures
Operating
Frequencies
Operating
Channels
Security
Ordering Information
•
BCM4325GKFBG: IEEE802.11b/g 196-pin FBGA 7.5 mm x 7.5
mm package
•
BCM4325HKFBG: IEEE802.11a/b/g 196-pin FBGA 7.5 mm x 7.5
mm package
•
BCM4325GKWLG: IEEE802.11b/g wlCSP package
•
BCM4325HKWLG: IEEE802.11a/b/g wlCSP package
Broadcom
®
, the pulse logo,
Connecting everything
®
, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. 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
© 2007 by BROADCOM CORPORATION. All rights reserved.
4325--PB00-R
01/31/07
Phone: 949-450-8700
Fax: 949-926-5203
E-mail: info@broadcom.com
Web: www.broadcom.com
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