DataSheet
BCM4343W
Single-Chip IEEE 802.11 b/g/n MAC/Baseband/
Radio with Bluetooth 4.1, an FM Receiver, and
Wireless Charging
GENERAL DESCRIPTION
®
The Broadcom BCM4343W is a highly integrated
Using advanced design techniques and process
technology to reduce active and idle power, the
BCM4343W is designed to address the needs of
highly mobile devices that require minimal power
consumption and compact size. It includes a power
management unit that simplifies the system power
topology and allows for operation directly from a
rechargeable mobile platform battery while
maximizing battery life.
single-chip solution and offers the lowest RBOM in
the industry for wearables, tablets, and a wide range
of other portable devices. The chip includes a 2.4
GHz WLAN IEEE 802.11 b/g/n MAC/baseband/radio,
Bluetooth 4.1 support, and an FM receiver. In
addition, it integrates a power amplifier (PA) that
meets the output power requirements of most
handheld systems, a low-noise amplifier (LNA) for
best-in-class receiver sensitivity, and an internal
transmit/receive (iTR) RF switch, further reducing the
overall solution cost and printed circuit board area.
The BCM4343W implements the world’s most
advanced Enhanced Collaborative Coexistence
algorithms and hardware mechanisms, allowing for
an extremely collaborative WLAN and Bluetooth
coexistence.
The WLAN host interface supports gSPI and SDIO
v2.0 modes, providing a raw data transfer rate up to
200 Mbps when operating in 4-bit mode at a 50 MHz
bus frequency. An independent, high-speed UART is
provided for the Bluetooth/FM host interface.
Figure 1: BCM4343W System Block Diagram
VDDIO VBAT
WL_REG_ON
WLAN
Host I/F
WL_IRQ
SDIO*/SPI
2.4 GHz WLAN +
Bluetooth TX/RX
CLK_REQ
BT_REG_ON
PCM
BPF
BCM4343W
Bluetooth
Host I/F
BT_DEV_WAKE
BT_HOST_WAKE
FM
RX
UART
I2S
FM RX
Host I/F
Stereo Analog Out
4343W-DS107-R
August 24, 2015
5300 California Avenue • Irvine, CA 92617 • Phone: 949-926-5000 • Fax: 949-926-5203
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