Preliminary Data Sheet
BCM4319
Single-Chip IEEE 802.11™ a/b/g/n MAC/Baseband/
Radio with Integrated SDIO and USB Interfaces
GENERAL DESCRIPTION
GENERAL DESCRIPTION
The Broadcom BCM4319 single-chip device provides
the highest level of integration for Wi-Fi enabled SDIO
and USB-based wireless systems. Featuring an IEEE
802.11™ a/b/g/n MAC/baseband/radio with integrated
CMOS, Power Amplifiers (PAs) and a power
management unit (PMU) the BCM4319 provides a
compact, ultrasmall form factor solution with few
required external components. This enables high-
volume costs to be driven down and allows flexibility
in the size, form, and function of handheld devices.
In addition, the BCM4319 includes integrated transmit
and receive baluns for both the 2.4 GHz and 5 GHz
RF paths, further reducing the overall solution cost.
To simplify the system power topology and to enable
operation directly from the battery of a mobile
platform, the BCM4319 includes one switching
regulator (buck mode), five linear low dropout (LDO)
voltage regulators, and an advanced PMU. A variable
input voltage range of 2.7V–5.5V is supported.
The integrated buck regulator enables the internal
power amplifiers to operate at optimal performance,
even at low VBAT supply voltages.
The BCM4319 supports SDIO (4-bit, 1-bit, and Serial
Peripheral Interface (SPI) modes), generic SPI
(gSPI), USB 2.0 (device), and local Bluetooth®
coexistence host interfaces.
APPLICATIONS
Using advanced design techniques and process
technology to deliver the lowest active and idle power,
the BCM4319 extends system battery life in mobile
systems, while maintaining consistent connectivity
and high performance.
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USB 2.0 dongles
Printers
Media players
Cellular and mobile phones
Gaming systems
Integrated CMOS WLAN 2.4 GHz and 5 GHz power
amplifiers provide sufficient output power to meet the
needs of most WLAN devices. An optional external
PA and Low-Noise Amplifier (LNA) are also
supported.
Cameras
All types of battery powered devices
Integrated designs with Bluetooth and GPS
Figure 1: BCM4319 System Block Diagram
VDDIO
VBAT
WL_REG_ON
WLAN Host I/F
5 GHz WLAN Tx
SDIO
Switch
5 GHz WLAN Rx
USB
BCM4319
UART
2.4 GHz WLAN Tx
TCXO
Reference frequency
Switch
CBF
Rx
2.4 GHz WLAN
4319-DS05-R
April 2, 2014
5300 California Avenue • Irvine, CA 92617 • Phone: 949-926-5000 • Fax: 949-926-5203
CYPRESS [ CYPRESS ]
