OVERVIEW
The Broadcom BCM4325 family of single-chip devices provides for the highest level of integration for a mobile or handheld wireless system, with integrated IEEE 802.11a/b/g (MAC/Baseband/Radio), Bluetooth 2.1 + enhanced data rate (EDR), and FM receiver. Thus providing a compact small form factor solution with minimal external components to drive the costs for mass volumes and allows for flexibility in size, form, and function of handheld devices. The BCM4325 is designed to address the needs of highly mobile devices that require minimal power consumption and reliable operation.

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

• 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

• 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