ATEVK1104AU

AVR32934: EVK1104AU Getting Started Guide Features • Powering up the board • Preparing the board for audio playback • Playing music 1 Introduction The EVK1104AU is a reference design and development system for the AT32UC3A3256AU, a 32-bit Atmel® AVR® audio microcontroller from Atmel Corporation. From a hardware point of view, the EVK1104AU is identical to the EVK1104, so you can refer to the EVK1104 for more information (schematics, BOM, etc.). The only difference is that the main microcontroller is an AT32UC3A3256AU instead of an AT32UC3A3256. 32-bit Atmel Microcontrollers EVK1104AU Getting Started Guide The AT32UC3A3256AU is an audio microcontroller that authorizes execution of Atmel licensed Audio firmware IPs such as commercial MP3, AAC, WMA audio decoders. The kit is equipped with a rich set of memories and peripherals that make the EVK1104AU a perfect audio platform. This guide shows the user how to get quickly started with this kit. Figure 1-1 EVK1104AU board Rev. 32182A-AVR-11/11 2 Powering up the board The EVK1104AU board can be powered from 3 different sources, external power supply, “USB VCP” and “USB USER” connector. If two power sources are applied at the same time the following priorities are used to select the current valid power source: 1. External power supply (header J2) 2. USB VCP 3. USB USER That means that if an external power supply is connected to the board, it has the highest priority and will therefore serve as current power supply. Other power supplies that are connected to the board at the same time will be ignored. On the PCB revision 1, the external power supply must be 5.5V. In order to be able to supply external USB devices that are connected to the board the minimal power supply specification should be 5.5V, 1A. This ensures that the board will work properly if a USB device is connected that needs the maximum allowed 500mA as specified in the USB specification. It is not possible to draw that amount of current from the host through a normal USB cable but there are cables available that can be connected to two hosts (such a cable is not a kit content). When playing music from a mass-storage device, it is enough to power the board from the USB VCP connector. Use the “Mini-B plug to std-A plug 1.5m USB2.0” cable that is included in the kit and connect it between the host and the board USB VCP connector. 2 AVR32934 32182A-AVR-11/11 AVR32934 Figure 2-1 Possible power input interfaces on the EVK1104AU J2 power Input header USB USB USER VCP More information about the different power inputs is available in the hardware user’s guide. When the board is powered the green LED, marked with “PWR”, will light up and the default board firmware will start to run. 3 Preparing the board for audio playback In order to play some music a USB mass-storage device must be connected to the “USB USER” connector by using the “Mini-A plug to std-A receptacle” adaptor cable. The adaptor cable is a kit content. The default audio output should be configured to use the on board codec and thus the jumpers on J6 should be set as indicated in the figure if not already set up like this. 3 32182A-AVR-11/11 4 Browsing the disk and playing music After a mass-storage device has been connected to the USB-USER port the player enters the disk browsing view. To control the application the touch sensors can be used that are marked in the Figure 4-1. Figure 4-1 Touch sensors for controlling the audio application CS1 CS2 CS3 CS4 WHEEL-UP WHEEL-LEFT WHEEL-RIGHT WHEEL-DOWN 4.1 Disk browsing view In this view it is possible to browse the storage media but only MP3 files and directories will be shown. Use the touch sensors to browse the storage media for the music file or playlist you want to play. 4 AVR32934 32182A-AVR-11/11 AVR32934 ƒ WHEEL-UP: Browse the file list up. ƒ WHEEL-DOWN: Browse the file list down ƒ WHEEL-LEFT: Enter the parent directory. If the user is in the root directory of the current selected storage media a touch of this button will result in a menu which lets the user select a storage media. ƒ WHEEL-RIGHT: Enter a subdirectory or play the currently selected file or playlist. ƒ CS3: Play the currently selected file or playlist. By playing a file or a playlist the audio player will change its view from the disk view to the play view. 4.2 Play view Following functionality have the touch sensors in the play view. ƒ ƒ ƒ ƒ ƒ ƒ ƒ WHEEL-UP: Increase the volume. WHEEL-DOWN: Decrease the volume. WHEEL-LEFT: Play previous song in playlist or on disk. WHEEL-RIGHT: Play the next song in playlist or on disk. CS3: Play/Pause. CS1: go back to the navigation window. In this mode, the current file is still playing, and the user can browse the disk and select a new audio file with CS3 or WHEEL-RIGHT. User can also switch back to the play view with CS4: it will display the current playing file. CS4: repeat/shuffle modes. While in the play mode, this key gives access to the repeat/shuffle modes. Slide from WHEEL-UP to WHEEL-RIGHT to select Repeat or Shuffle. Press CS2 to change mode. Go back to the Play view with CS1. 5 32182A-AVR-11/11 5 References and further information EVK1104 hardware reference: This is included in the AVR Studio® 5 and on the avrfreaks wiki page (http://www.avrfreaks.net). Support : audio@atmel.com 6 AVR32934 32182A-AVR-11/11 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: (+1)(408) 441-0311 Fax: (+1)(408) 487-2600 www.atmel.com Atmel Asia Limited Unit 01-5 & 16, 19F BEA Tower, Milennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon HONG KONG Tel: (+852) 2245-6100 Fax: (+852) 2722-1369 Atmel Munich GmbH Business Campus Parkring 4 D-85748 Garching b. Munich GERMANY Tel: (+49) 89-31970-0 Fax: (+49) 89-3194621 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chou-ku, Tokyo 104-0033 JAPAN Tel: (+81) 3523-3551 Fax: (+81) 3523-7581 © 2011 Atmel Corporation. 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Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. 32182A-AVR-11/11 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip: ATEVK1104AU