2015 年 8 月 13 日時点で、Qualcomm Incorporated の子会社である Qualcomm Global Trading Pte. Ltd. は、CSR 社の買収を完了したことを
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SiRFstarV™ 5e

SiRFstarV™ 5e は、位置確認を迅速に行うことができ、画像または映像のジオタギング、アセットトラッキング、フィットネス用として使用できます。SiRFSmartGNSS™ などの高度な低電力技術により、節電しながら、優れたパフォーマンスを発揮できます。

CSR の次世代 SiRFstarV ファミリーは、GPS、GLONASS、COMPASS、Galileo 衛星を追跡するための Quad-GNSS を搭載しています。SiRFstarV チップは、極めて正確な位置の継続的把握、アドバンスド パワー マネージメント、高い耐干渉性を実現します。感度、TTFF、アーバンキャニオン(ビルとビルの間)での使用、精度において優れたパフォーマンスを発揮できるよう、常に限界に挑んでいます。 

 

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Overview

SiRFstarV 5e is a Global Navigation Satellite System (GNSS) engine optimised to enable highly accurate location positioning for devices including mobile phones, cameras, and health and fitness products. By supporting fully concurrent GLONASS, GPS, QZSS and SBAS from ROM, the highest accuracy and fastest time-to-first-fix (TTFF) are ensured.

SiRFstarV 5e is offered in a size optimal 0.4mm pitch Wafer Level Chip Scale Package (WLCSP) and a 0.5mm pitch Ball Grid Array (BGA) for low cost PCB applications.

  • Highly Accurate GNSS operation
     
  • Accuracy, Embedded Extended Ephemeris, for faster TTFF, direct to battery, low power.

 

SiRFstarV 5e offers a range of features to increase accuracy, improve time to first fix and preserve battery power to enable a better user experience. These include:

  • InstantFixTM Extended Ephemeris (EE) - Devices without wireless connectivity, such as cameras, are able to overcome slow TTFF, a common annoyance for the end user. 5e is capable of autonomously forward predicting EE for three days locally, and for connected devices the solution supports server based EE for up to 31 day for GPS and up to 14 day GLONASS EE
  • Direct to battery capability - The GNSS chip can connect directly to a Lithium battery supply, enabling system cost reduction and increased power efficiency. This is implemented by an integrated switched PMU, reducing system level power and eBOM costs
  • Design flexibility for optimal solution cost – With clear attention to solution implementation, 5e is designed for small size and low power. For example, UART and SPI Flash drive levels are drivable from 1.8v to 3.3v, eliminating the need for level shifters and increasing implementation flexibility 
  • Intelligent design – The 5e is designed to be optimised for low power battery operated devices. For instance, in asset tracking applications, the 5e engine will intelligently decide how long to try to acquire satellite signal based around its environment, saving a significant amount of battery power

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