BCM4774

Second-Generation GNSS Location Hub with Galileo Support

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Location Hub chip integrates a GNSS receiver with a second-generation sensor hub function in a single chip.
It simultaneously supports Galileo, GPS, GLONASS, SBAS, QZSS and BeiDou satellite systems.

The unique architecture of the Location Hub and extra memory compared to BCM4773 (first generation) extends the battery life of the mobile device. The BCM4774 offloads the data calculations from the system applications processor (AP), enabling the AP to sleep for longer periods of time. Compared to the previous generation, the BCM4774 further improves the on-chip location accuracy. This enables a very efficient and accurate low-power background location.

Features

  • Support for Galileo global satellite system with concurrent support for six different satellite systems
  • Up to 95 percent power savings compared to standard GNSS receivers and Sensor Hub systems
  • Hardware optimizations further increase AP power savings through offloading of sensor fusion, on-chip positioning, Geofencing™ and location batching
  • 30 percent board area reduction by integrating GNSS receiver and sensor hub
  • On-chip Wi-Fi positioning using a direct connect communication protocol to Broadcom's family of connectivity combo chips
  • Easy-to-use API enables OEMs to port their specific sensor fusion code onto BCM4774

Applications

  • Internet of Things
  • Smartphones
  • Wearables
  • Tablets
  • GPS

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