Only For Training And Service Purposes - LG CF360 Service Manual

3. TECHNICAL BRIEF
3.1.16 A-GPS
CF360 supports A-GPS operation using Infineon PMB2525 A-GPS module.
The PMB 2525 Hammerhead II GPS IC is Infineon Technologies and Global Locate's next
generation IC solution for GPS (Global Positioning System). The Hammerhead II GPS single
chip device enables the realization of a cost efficient GPS solution by integrating the complete
radio frequency front-end as well as the signal processing functionality in a single die. The PMB
2525 Hammerhead II IC allows the usage of assistance data by supporting A-GPS (assisted
GPS) standards (RRLP, RRC, OMA, SUPL).
With the help of advanced digital signal processing techniques based on sophisticated
correlation engines as well as powerful detection and navigation processing algorithms and the
use of A-GPS data, the Hammerhead II achieves enhanced sensitivity values of down to – 160
dBm with an external LNA as is required for indoor applications. A sophisticated dynamic power
management scheme supports several low-power modes which gives the lowest possible
energy usage per fix.
The Hammerhead II is especially targeted at the cellular market but it can also be used for
automotive navigation and infotainment systems as well as the wireless PDA market segment.
The main applications for Hammerhead II are location based services and the localization of
emergency calls for cellular systems according to, for example, the E911 mandate. In
conjunction with the appropriate software and driver, integrated on the cellular host, the
Hammerhead II system realizes the complete functionality for mobile assisted, mobile-based
and/or autonomous GPS operation. By integrating the signal processing functionality the host
system is relieved of all real-time critical A-GPS tasks.
One of three serial interfaces, UART, I2C or SPI, is used for communication with the host
system. A JTAG interface for boundary scan is also available.
The device is fabricated in advanced semiconductor technology and is available in a SG-UFWLB-
49 package.
General
• Single-chip A-GPS device for cellular applications and location based services, integrating the
radio front-end and the GPS baseband on the same die
• Fabricated in advanced low-power 0.13um CMOS technology
• Low power consumption using several power saving modes
• Supply from external voltage regulators or use the built in voltage regulators
• Advanced hardware correlator engine for enhanced sensitivity (down to -160 dBm at the
external LNA input for A-GPS)
• Fast Acquisition giving rapid Time-to-First-Fix (TTFF)
• Very low component count for lowest bill of material
• Multiple input clock signals supported
• Range of interface voltage supported
• Temperature range of -30℃ to +85 ℃
Interfaces
• RF antenna input
Interfaces
• Serial full duplex UART interface
• Serial I2C interface
• Serial full-duplex synchronous SPI interface
• IEEE 1149.1 compatible JTAG Test Access Port (TAP) and boundary scan
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Only for training and service purposes