SiRFstar IV 4e

Qualcomm® SiRFstar™ IV GSD4e B03 WLCSP is a comprehensive navigation processor built on a low-power RF CMOS single-die, incorporating the baseband, integrated navigation solution, software, ARM®7 processor, and RF functions that are designed to form a complete internal ROM-based standalone or Aided-GPS engine. GSD4e WLCSP is based on the new SiRFstar IV architecture. GSD4e WLCSP aims to lower BoM costs and risk while delivering automotive industry-leading GPS performance in a compact solution. GSD4e WLCSP serves the traditional GPS engine space because it is engineered to generate a PVT solution without relying upon host device processing power or other resources.

The technology in the SiRFstar IV is designed to balance maximum performance with minimal power consumption. It is engineered to break the old GPS performance vs power trade off through the fusion of a new high performance GPS engine, advanced power management, and a smart sensor interface to achieve high sensitivity hot start conditions for fast location fixes while drawing only 50-400 μA.
SiRFAware™ technology means never having to maintain full power to achieve maximum performance, nor turning the GPS receiver completely off to save power.

It breaks the old GPS performance vs power trade off through the fusion of a new high performance GPS engine, advanced power management, and a smart sensor interface to achieve high sensitivity hot start conditions for fast location fixes while drawing only 50-400 μA.

Opportunistic ephemeris decode and advanced power management allow the GPS receiver to stay in a hot start condition nearly continuously while consuming very little power

The GSD4e serves the traditional GPS engine market by generating a PVT solution via its 109 MHz ARM®7 CPU without relying on host processing power or other resources. The on-chip processor also allows customers to differentiate their products.