Audio
Atmel® is the world leader in digital audio docking solutions, providing solutions to leading audio equipment manufacturers around the world. With the Atmel digital audio solutions, it is easy to index and play a collection of digital audio files from any storage media such as MP3 players, USB sticks, SD cards, and embedded NAND flash. Alternatively, digital music can be streamed from a remote server across Ethernet or WLAN.
Features and Benefits
- Atmel microcontrollers and microprocessors offer multiple interfaces to play your music, power your system, connect USB products, touch sensors, RF transceivers, displays, and more.
- Atmel supports all USB classes relevant for audio applications: HID for control, audio class for streaming, and mass storage for file access. High-speed USB transfers make file manipulation effortless. Selected microcontrollers offer a specialized interface to SD cards, Memory Sticks, MMCs, and IDEs for high performance.
- Internal DSP capabilities allow the microcontroller to perform efficient sample rate conversion when needed during isochronous transfers (audio class).
- If your application requires remote control supporting RF4CE, Atmel AVR 8- and 32-bit microcontrollers supporting RF4CE, are provided. Through H&D Wireless, a valued partner, Atmel offers the industry's smallest WLAN module, complete with software drivers for wireless audio streaming. We also have Wi-Fi and Bluetooth solutions provided through our trusted partner network.
- Our ready to use web radio solution will help you design your system. See the AT91SAM Internet Radio application note
MP3-Player Docking Station
The Atmel docking solutions offer a wide range of direct and remote control interfaces, making integration into existing audio platforms straightforward and easy. Among the supported interfaces are direct control via touch, buttons, potentiometers, and rotary encoders. Remote control is available via I2C, UART, SPI, IR, and RF4CE. Other interfaces can be supported on request. The Atmel digital audio docking solutions feature digital transfer of audio content from the player to the docking station. This is supported over the USB audio class (streaming) or mass storage (file access), which guarantees perfect transmission of the audio from the player to the dock. The docking solution includes high quality decoding and Digital-to-Analog conversion. MP3 and WMA are supported (AAC support is coming soon).
- For details on capacitive touch technology, click here
Products
- Atmel AVR UC3 A0/A1 Series 32-bit microcontrollers
- Atmel AVR UC3 A3 Series 32-bit microcontrollers
- Atmel AVR UC3 B Series 32-bit microcontrollers
- Atmel Hardware Security Solutions
Web Radio
Compare the Atmel web radio solution to traditional radio broadcasting to appreciate the smooth audio streaming and immediate access to radio stations around the world. Digitized and compressed data is extracted from the IP stream and routed trough a decoder for decompression. The decoded PCM data is transmitted to a DAC that reconstructs the analog audio signal to be used to drive an amplifier with attached headphones or loudspeakers.
- For details on wireless technology, click here
For our ARM-based AT91SAM9 families, all products can fit for a web radio design. You just need to select the microcontroller containing interfaces that might be helpful in addition to the web radio requirements (LCD, video decoder).
- Use our parametric product table to select those extra interfaces required
- Buy your kit from any Atmel distributor
- Download the software package relevant to your microcontroller
- Go to our AT91SAM application note section for dedicated web radio related app notes.
Need any help? Please contact at91@atmel.com.
Products
- Atmel AT91SAM9260
- Atmel AT91SAM9G10
- Atmel AT91SAM9G20
- Atmel AT91SAM9G45
Car Stereos
Car stereos must be able to play digital music from players, memory cards, or Flash drives. Atmel AVR 32-bit microcontrollers offer the perfect solution to access, decode, and play music files over the USB. Various formats are supported, including MP3 and WMA (with AAC available soon), along with ID3 tags, playlist management, and more. Atmel provides a complete software library, the Atmel UC3 software framework, which supports fast and easy development.
- For details on capacitive touch technology, click here
Products
- Atmel AVR UC3 A0/A1 Series 32-bit microcontrollers
- Atmel AVR UC3 A3 Series 32-bit microcontrollers
- Atmel AVR UC3 B Series 32-bit microcontrollers
Headsets and Microphones
Replace medium quality embedded laptop speakers with a set of USB-powered, high quality speakers. The USB port provides both signal and up to 2.5W of power — enough to power a small set of PC speakers. USB audio supports mono, stereo, and multi-channel audio. Voice and sound can also be captured and digitally sent to the PC over the USB. Atmel provides a complete software library (the AVR UC3 software framework), which supports fast and easy development.
Products
Atmel AVR UC3 32-bit microcontrollers, with embedded DSP, offer ample processing power. For more demanding systems, the Atmel AT91SAM9 family delivers high-performance processing combined with versatile interfaces.
Atmel AVR UC3 Product Families
| AVR UC3 A0/A1 Series 32-bit microcontrollers | MP3 Player Docking Stations, Car Stereos |
| AVR UC3 A3 Series 32-bit microcontrollers | MP3 Player Docking Stations, Car Stereos |
| AVR UC3 B Series 32-bit microcontrollers | MP3 Player Docking Stations, Car Stereos, Headsets and Microphones |
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ARM-based AT91SAM9 Product Families
| Web Radio Microcontroller | RF Transceivers | ||
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ARM-based solutions: AT91SAM926 AT91SAM9G AT91SAM9M Key features:
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Transceivers: AT86RFxx Key features:
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Hardware Security Products
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Audio Selector Guide
| Play Digital Music from USB Mass Storage Devices | MP3-player Docking | USB Audio Class, Streaming USB | Recommended Device Family | Device Features (in addition to OTG, I2S, built-in audio and DAC) | Required External Memory | Recommended Evaluation Kit |
|---|---|---|---|---|---|---|
| MP3 | AT32UC3A0256 | USB FS, Ethernet, EBI | EVK1105 | |||
| AT32UC3A1256 | USB FS, Ethernet |
EVK1105 | ||||
| AT32UC3A3256 | USB HS, EBI, SD-Card | EVK1104 | ||||
| MP3/WMA | AT32UC3A0512 | USB FS, Ethernet, EBI | EVK1105 | |||
| AT32UC3A1512 | USB FS, Ethernet | EVK1105 | ||||
| MP3/WMA | AT32UC3A0512 | USB FS, Ethernet, EBI | 128 KByte | EVK1105 | ||
| MP3/WMA/Coverart | AT32UC3A0512 | USB FS, Ethernet, EBI | 192 KByte | EVK1105 | ||
| MP3/WMA/Coverart | X | AT32UC3A0512 | USB FS, Ethernet, EBI | 192 KByte | EVK1105 | |
| X* | X* | AT32UC3A0128 | USB FS, Ethernet, EBI | EVK1105 | ||
| AT32UC3A1128 | USB FS, Ethernet | EVK1105 | ||||
| AT32UC3A3128 | USB HS, EBI, SD-Card | EVK1104 | ||||
| AT32UC3B0128 | USB FS | EVK1105 | ||||
*May not co-exist in one device |
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Reference Designs and Tools
- Atmel EVK1104: The 32-bit AVR EVK1104 is an evaluation kit for the Atmel AT32UC3A3256 that combines the Atmel state-of-the-art AVR 32-bit microcontroller with an unrivaled selection of communications interfaces such as USB devices. They support on-the-go functionality, SD cards, NAND flash with ECC, and stereo 16-bit Digital-to-Analog converters (DACs)
- Atmel EVK1105: The 32-bit AVR EVK1105 is an evaluation kit for the Atmel AT32UC3A0512 that demonstrates the Atmel state-of-the-art AVR 32-bit microcontroller in high fidelity audio decoding and streaming applications
- Atmel AT91SAM9xxx-EK: Each of our ARM9 microcontrollers has an evaluation kit, which demonstrates the Atmel state-of-the-art expertise in the ARM area
- Atmel AVR32 Studio and our GNU toolchain
- Atmel AVR UC3 software framework
- Atmel AT91 Software Package
- Atmel QTouch® Library
- Atmel AT88CK109STK8: Evaluation Kit for Atmel CryptoAuthentication™. Enables easy security integration with Atmel AVR and ARM
For our AVR UC3 families, the Audio Device Selector helps you to find the perfect microcontroller and reference design for your next project.
- Use our Audio Selector Guide and find the recommended device and evaluation kit for your application
- Buy your kit from any Atmel distributor
- Download AVR32 Studio and our GNU toolchain
- Go to our AVR application note section for dedicated audio related app notes
- Our application note on MP3-player reference design is available from our support line. Please e-mail avr@atmel.com for information on how to obtain this application note along with the application code to connect MP3 Players to the EVK1104 or EVK1105 reference design
- Need any help? Please contact avr@atmel.com. Our excellent support staff is here to help you!
Enabling Technologies
- For power efficiency, refer to the Atmel picoPower® pages
- For capacitive touch, refer to the Atmel Touch Solutions pages
- For AT91SAM ARM-based microcontrollers and eMPUs refer to the Atmel ARM-based solutions page
- Atmel Hardware Security Solutions
Learn more about the Atmel solution Application Notes, Devices, and Tools and Software
