Revision HistoryBCM4343W Data Sheet
Broadcom®Single-Chip IEEE 802.11 b/g/n MAC/Baseband/Radio
August 24, 2015 • 4343W-DS107-R Page 3
BROADCOM CONFIDENTIAL
IEEE 802.11x Key Features
• Single-band 2.4 GHz IEEE 802.11b/g/n.
• Support for 2.4 GHz Broadcom TurboQAM® data
rates (256-QAM) and 20 MHz channel
bandwidth.
• Integrated iTR switch supports a single 2.4 GHz
antenna shared between WLAN and Bluetooth.
• Supports explicit IEEE 802.11n transmit
beamforming.
• Tx and Rx Low-density Parity Check (LDPC)
support for improved range and power efficiency.
• Supports standard SDIO v2.0 and gSPI host
interfaces.
• Supports Space-Time Block Coding (STBC) in
the receiver.
• Integrated ARM Cortex-M3 processor and on-
chip memory for complete WLAN subsystem
functionality, minimizing the need to wake up the
applications processor for standard WLAN
functions. This allows for further minimization of
power consumption, while maintaining the ability
to field-upgrade with future features. On-chip
memory includes 512 KB SRAM and 640 KB
ROM.
• OneDriver™ software architecture for easy
migration from existing embedded WLAN and
Bluetooth devices as well as to future devices.
Bluetooth and FM Key Features
• Complies with Bluetooth Core Specification
Version 4.1 with provisions for supporting future
specifications.
• Bluetooth Class 1 or Class 2 transmitter
operation.
• 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.
• Interface support — Host Controller Interface
(HCI) using a high-speed UART interface and
PCM for audio data.
Bluetooth and FM Key Features (Continued)
• FM receiver unit supports HCI for communication.
• Low-power consumption improves battery life of
handheld devices.
• FM receiver: 65 MHz to 108 MHz FM bands;
supports the European Radio Data Systems
(RDS) and the North American Radio Broadcast
Data System (RBDS) standards.
• Supports multiple simultaneous Advanced Audio
Distribution Profiles (A2DP) for stereo sound.
• Automatic frequency detection for standard
crystal and TCXO values.
General Features
• Supports a battery voltage range from 3.0V to
4.8V with an internal switching regulator.
• Programmable dynamic power management.
• 4 Kbit One-Time Programmable (OTP) memory
for storing board parameters.
• Can be routed on low-cost 1 x 1 PCB stack-ups.
• 74-ball WLBGA package (4.87 mm × 2.87 mm,
0.4 mm pitch).
• 153-bump WLCSP package (115 m bump
diameter, 180 m bump pitch).
• Security:
– WPA and WPA2 (Personal) support for
powerful encryption and authentication.
– AES in WLAN hardware for faster data
encryption and IEEE 802.11i compatibility.
– Reference WLAN subsystem provides Cisco
Compatible Extensions (CCX, CCX 2.0, CCX
3.0, CCX 4.0, CCX 5.0).
– Reference WLAN subsystem provides Wi–Fi
Protected Setup (WPS).
• Worldwide regulatory support: Global products
supported with worldwide homologated design.
• Multimode wireless charging support that
complies with the Alliance for Wireless Power
(A4WP), the Wireless Power Consortium (WPC),
and the Power Matters Alliance (PMA).