Preliminary Data Sheet
BCM43455
Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/
Radio with Integrated Bluetooth 4.1 and FM
Receiver
GENERAL DESCRIPTION
The Broadcom® BCM43455 single-chip device
provides the highest level of integration for a mobile or
handheld wireless system with integrated single-
stream IEEE 802.11ac MAC/baseband/radio,
Bluetooth 4.1,and FM receiver.
Using advanced design techniques and process
technology to reduce active and idle power, the
BCM43455 is designed to address the needs of
mobile devices that require minimal power
consumption and compact size. It includes a power
management unit which simplifies the system power
topology and allows for direct operation from a mobile
platform battery while maximizing battery life.
In IEEE 802.11ac mode, the WLAN operation
supports rates of MCS0–MCS9 (up to 256 QAM) in
20 MHz, 40 MHz, and 80 MHz channels for data rates
of up to 433.3 Mbps. All rates specified in the IEEE
802.11a/b/g/n are supported. Included on-chip are
2.4 GHz and 5 GHz transmit amplifiers and receive
low-noise amplifiers. Optional external PAs and LNAs
are also supported.
The BCM43455 implements highly sophisticated
enhanced collaborative coexistence hardware
mechanisms and algorithms, which ensure that
WLAN and Bluetooth collaboration is optimized for
maximum performance. In addition, coexistence
support for external radios (such as LTE cellular and
GPS) is provided via an external interface. As a result,
enhanced overall quality for simultaneous voice,
video, and data transmission on a handheld system is
achieved.
The WLAN section supports the following host
interface options: an SDIO v3.0 interface that can
operate in 4b or 1b mode, a high-speed 4-wire UART,
and a PCIe Gen1 (3.0 compliant) interface. The
Bluetooth section supports a high-speed 4-wire UART
interface.
Figure 1: Functional Block Diagram
VIO
VBAT
WL_REG_ON
PCIe
5 GHz WLAN Tx
5 GHz WLAN Rx
FEM or
T/R
Switch
WLAN
Host I/F
UART
SDIO
2.4 GHz WLAN Tx
FEM or
Optional
T/R
External
Coexistence I/F
2.4 GHz WLAN/BT Rx
Bluetooth Tx
COEX
CBF
Switch
BCM43455
BT_REG_ON
UART
I2S
Bluetooth
Host I/F FM
Rx Host I/F
PCM
BT_DEV_WAKE
BT_HOST_WAKE
FM Rx
FM Audio Out
I2S
FM I/F
43455-DS109-R
5300 California Avenue • Irvine, CA 92617 • Phone: 949-926-5000 • Fax: 949-926-5203
November 5, 2015
CYPRESS [ CYPRESS ]
