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diff --git a/usb/common/audio/AUDFormatTypeOneDescriptor.h b/usb/common/audio/AUDFormatTypeOneDescriptor.h
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+++ b/usb/common/audio/AUDFormatTypeOneDescriptor.h
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+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !!!Purpose
+///
+/// Definitions for using USB %audio format type I descriptors.
+///
+/// !!!Usage
+///
+/// -# Declare an instance of AUDFormatTypeOneDescriptor as part of the
+///    configuration descriptors of an audio device.
+//------------------------------------------------------------------------------
+
+#ifndef AUDFORMATTYPEONEDESCRIPTOR_H
+#define AUDFORMATTYPEONEDESCRIPTOR_H
+
+//------------------------------------------------------------------------------
+//         Definitions
+//------------------------------------------------------------------------------
+
+/// Format type for a format type I descriptor.
+#define AUDFormatTypeOneDescriptor_FORMATTYPEONE        0x01
+
+/// AUDFormatTypeOneDescriptor_PCM - PCM format.
+#define AUDFormatTypeOneDescriptor_PCM                  0x0001
+
+/// Indicates the sampling frequency can have any value in the provided range.
+#define AUDFormatTypeOneDescriptor_CONTINUOUS           0
+
+//------------------------------------------------------------------------------
+//         Types
+//------------------------------------------------------------------------------
+
+#ifdef __ICCARM__          // IAR
+#pragma pack(1)            // IAR
+#define __attribute__(...) // IAR
+#endif                     // IAR
+
+//------------------------------------------------------------------------------
+/// Describes an audio data stream that is constructed on a sample-by-sample
+/// basis. This type must be augmented with either the continuous sampling
+/// frequency range (if bSamFreqType = <AUDFormatTypeOneDescriptor_CONTINUOUS>)
+/// or with an array containing the possible discrete frequencies.
+//------------------------------------------------------------------------------
+typedef struct {
+
+    /// Size of descriptor in bytes.
+    unsigned char bLength;
+    /// Descriptor type (AUDGenericDescriptor_INTERFACE).
+    unsigned char bDescriptorType;
+    /// Descriptor subtype (AUDStreamingInterfaceDescriptor_FORMATTYPE).
+    unsigned char bDescriptorSubType;
+    /// Format type (AUDFormatTypeOneDescriptor_FORMATTYPEONE).
+    unsigned char bFormatType;
+    /// Number of physical channels in the audio stream.
+    unsigned char bNrChannels;
+    /// Number of bytes occupied by one audio subframe.
+    unsigned char bSubFrameSize;
+    /// Number of bits effectively used in an audio subframe.
+    unsigned char bBitResolution;
+    /// Number of supported discrete sampling frequencies, or
+    /// AUDFormatTypeOneDescriptor_CONTINUOUS.
+    unsigned char bSamFreqType;
+
+} __attribute__ ((packed)) AUDFormatTypeOneDescriptor; // GCC
+
+#ifdef __ICCARM__          // IAR
+#pragma pack()             // IAR
+#endif                     // IAR
+
+#endif //#ifndef AUDFORMATTYPEONEDESCRIPTOR_H
+