NXP Semiconductors introduced a combined car radio and audio
system fully integrated on a single IC. The SAF775x is the third
generation of NXP’s popular car radio and audio DSP product family and
is the industry’s first single-chip multi-tuner RFCMOS IC with embedded
AM, FM, and DAB tuners. With improved audio processing
power, the new product achieves excellent reception and performance. At
the same time, the SAF775x helps to significantly lower system costs
via a reduced bill of materials.
A few years ago, NXP introduced FM dual-tuner phase
diversity in car radio applications, using two tuners for better
reception. However, up until now, both tuners were separate devices,
external to the DSP chip. This separation was required to avoid
interference and because different process technologies were used for
analog RF tuners and digital signal processing technologies. With the
introduction of the SAF775x, NXP once again managed to set a new
milestone in radio processing, by integrating two independent tuners
onto a single die and creating a much more compact solution to
significantly lower system cost. This integrated dual-tuner device
offers more than twice the processing power of previous generations,
enabling superior radio performance and better all-round reception
Another aspect of the SAF775x is its open programmability. The IC
includes an 'open' Tensilica HiFi 2 Audio DSP for customers to program
their own features, or to run those of third-party software vendors.
This gives car radio manufacturers the choice and flexibility to
differentiate their car infotainment solutions without resorting to
expensive external ICs. Automotive tier one Visteon works closely with
NXP throughout silicon development to ensure early adoption of NXP tuner
and DSP technology.
Advanced audio processing is another benefit that the new SAF775x
brings to the market. Customers may wish to use the HiFi 2 Audio DSP for
audio processing from third party vendors such as Arkamys or AM3D.
Another innovative application
that can run on this HiFi 2 Audio DSP is active noise cancellation of
engine sound: uncomfortable harmonics interfering with music playback
and the general driving experience are removed by means of audio
software processing. In combination with 3rd party software, the SAF775x
offers an inexpensive way of damping the unwanted noise and replicating
the desirable engine sound.
For more information visit www.nxp.com.
This article originally appeared in EE Times Europe.