BCM4319 Preliminary Data Sheet
Mobile Phone Usage Model
Mobile Phone Usage Model
The BCM4319 has a flexible Universal Serial Bus (USB) and a secure digital input/output (SDIO) interface for
cellular phone applications, enabling it to transparently connect to existing circuits. In addition, the temperature-
compensated crystal oscillator (TCXO) input allows the use of existing clock sources within the system to further
minimize the size, power, and cost of the complete system.
The BCM4319 incorporates the following unique features for easy integration into mobile phone platforms:
•
•
The TCXO interface accommodates typical cell phone reference frequencies.
The transceiver’s highly linear design ensures the lowest spurious output regardless of operating state. It
has been fully characterized in all global cellular bands.
•
The transceiver design, with minimal required external filtering, has excellent blocking and intermodulation
performance in the presence of the following cellular transmissions:
– Global Standard for Mobile Communications (GSM)
– General Packet Radio Service (GPRS)
– Code Division Multiple Access (CDMA)
– Wideband CDMA (WCDMA)
– Integrated Digital Enhanced Network (IDEN).
Minimal external components are required for integration; compact packaging is available.
•
The BCM4319 is designed to interface directly with new and existing handset designs as shown in Figure 3.
Figure 3: Mobile Phone System Diagram
VDDIO
VBAT
WL_REG_ON
WLAN Host I/F
LAN Tx
5 GHz W
SDIO
Switch
5 GHz WLAN Rx
USB
BCM4319
UART
2.4 GHz WLAN Tx
TCXO
Reference frequency
Switch
CBF
z WLAN Rx
2.4 GH
Broadcom®
April 2, 2014 • 4319-DS05-R
Single-Chip IEEE 802.11™ a/b/g/n MAC/Baseband/Radio
Page 15
CYPRESS [ CYPRESS ]
