The so-called “PND-on-a-chip” (BCM4760) embeds a global positioning system (GPS) baseband,radio frequency (RF) circuitry and low noise amplifier (LNA) as well as an ARM11 processor an OpenGL ES 1.1/OpenVG 1.0-compliant graphics processor. Designed in Broadcom’s 65 nanometer (nm) process,the BCM4760 also integrates an audio codec,touch screen controller and USB 2.0 controller with high speed transceiver,all on a single die.
This new solution is currently sampling for early access customers.
Low- to high-end PNDs
The BCM4760 SoC enables system manufacturers to create PNDs at various price points and features.
For the entry-level market where low cost is the primary focus,the BCM4760 provides a USB 2.0 OTG high-speed controller with integrated transceiver,a 4- or 5-wire touch controller,and audio mixer with a digital-to-analog converter (DAC) to simplify the design and help shrink the PCB footprint while keeping the total bill-of-material (BOM) cost to a minimum.
For the mid-level market,the BCM4760 provides ample processing power for the rapid display of 3D city maps and 3D landmarks. It utilizes high performance 3-processor architecture,multiple high-speed interfaces,and Broadcom’s connectivity technologies,such as Bluetooth and WLAN chipsets,can be connected directly to the BCM4760 platform. Other features,such as hands-free speakerphone,photo viewing and music playback,are also supported.
For the high-level market,the BCM4760 supports a direct connection to Broadcom’s VideoCore family of mobile multimedia co-processors. Adding the VideoCore III co-processor for example,enables high definition (HD) video playback and recording,graphics acceleration,image signal processing (ISP),and more.
