Audi A5 car audio subsystem based on Blackfin and SHARC processors

The Audi A5Coupé is a classic sports car with a sculptural body and streamlined features. Its harmonious interior lines and precision instrument panels that are fully integrated into the instrument panel complement the car's explosive shape. Thanks to ADI's Blackfin® processor and other components, the front end of the broadcast system and the graphical multimedia interface with a dashboard appearance, it is this that ensures the interior of the vehicle is in perfect harmony with its classic exterior.

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Blackfin's ADSP-BF539 processor provides the multimedia interface to the Audi A5 broadcast system. The exact name should be the Audi Symphony/Concert Radio, as it can play CD-quality music for drivers and passengers. The optional Digital Audio Broadcasting (DAB) feature is supported by an ADSP-BF532 processor, and the other ADSP-BF532 processor supports an MP3-compatible 6-disc CD autochanger. Another ADSP-BF532 processor supports the Audi A5's music interface, which integrates a portable media player like Apple's iPod player for easy display on the dashboard and easy to control by the steering wheel. The optional Bang & Olufsen (B&O) surround sound amplifier, a high-fidelity sound quality standard for home and car entertainment systems, is based on Analog Devices' SHARC® processor for ultimate sound quality.

Other processors have also been considered, but Blackfin is ideal because it provides high performance, scalability and connectivity for handling audio decoding, DAB and control multimedia interfaces in Audi's automotive entertainment systems. It also provides a software framework that supports rapid, low-risk development. ADI's reputation as a leader in high-end audio systems and its extensive industry-tailored third-party IP product portfolio can help influence customer decisions.

"Audi has made the A5 Coupé a grand launch of the most powerful pioneering design to date, and Blackfin has contributed."

Why is the Blackfin processor?

Blackfin processors provide automotive developers with the performance and connectivity they need to design electronic applications, especially those that require field upgrades. The flexibility of software is very important for automotive applications as media formats and communication standards are constantly changing. Moreover, because Blackfin combines signal, control processing and multimedia interfaces, it is unparalleled in the automotive industry.

The Blackfin family integrates a wealth of industry-leading system peripherals, making the processor the platform of choice for next-generation automotive applications like Audi. The developers of the Audi project took advantage of the convenience of all the peripherals provided by the Blackfin architecture.

The Blackfin family integrates a wealth of industry-leading system peripherals, making the processor the platform of choice for next-generation automotive applications like Audi. The developers of the Audi project took advantage of the convenience of all the peripherals provided by the Blackfin architecture.

A 533MHz Blackfin BF539 processor controls the multimedia interface (MMI) of Audi's symphony/concert broadcast via the Parallel Peripheral Interface (PPI). MMI was developed through an artistic design graphical user interface software tool that allows designers to prototype MMI user interfaces and easily add additional custom extensions.

A 533MHz Blackfin BF539 processor controls the multimedia interface (MMI) of Audi's symphony/concert broadcast via the Parallel Peripheral Interface (PPI). MMI was developed through an artistic design graphical user interface software tool that allows designers to prototype MMI user interfaces and easily add additional custom extensions.

Another Blackfin BF532 processor is used in CD players - a product used in other Audi cars to handle MP3 decoding/playback and audio processing. The Blackfin processor is also connected to the Multimedia Oriented System Transport Bus (MOST), a bus that is well known in integrated automotive multimedia systems. The Blackfin BF532 runs the MOST protocol stack and protocol and is connected via Blackfin's serial bus.

There is also a Blackfin BF532 that supports the Audi music interface. At up to 400 MHz, the processor represents a significant price/performance ratio compared to the application, and in fact the processor can perform both control and signal processing, which means it can handle both audio processing and peripheral management. . Audi's music interface allows users to control stereo audio sources, including USB sticks and iPod devices (from the fourth generation) through the audio system and multifunction steering wheel. The interface also reproduces the display of the iPod, including the soundtrack title, on the screen of the audio system.

The SHARC 21362 processor was selected as the basis for B&O Surround Stereo amplifiers with its high performance, rich audio feature set and a good reputation in the audio market. The SHARC processor performs optimized audio filtering algorithms, adaptive car body echo, and B&O amplifiers are optional for the Audi A5 Coupé

Special support

All developers of the Audi A5 project design team use ADI's VisualDSP++ Integrated Development and Debug Environment (IDDE), which allows for efficient management of projects from start to finish with a single interface. Key features of VisualDSP++ include native C/C++ compilers, advanced graphical point-and-shoot tools, statistical analysis, and the VisualDSP++ kernel (VDK), which allows code to be executed in a structured, scaled manner. Developers also received online and on-site technical support from Analog Devices, leveraging the experience and background of ADI engineers in solving complex hardware and cabling.

Audi has listed the A5 Coupé as one of the most powerful and powerful pioneering designs to date, and Blackfin has contributed. The car has a rich set of features and offers hands-free operation for high-fidelity audio systems and the ability to upgrade in the future, which is a good investment.

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