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diff --git a/components/codec-ak4641/ak4641.h b/components/codec-ak4641/ak4641.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.
+ * ----------------------------------------------------------------------------
+ */
+
+#ifndef AK4641_H
+#define AK4641_H
+
+//------------------------------------------------------------------------------
+//         Definitions
+//------------------------------------------------------------------------------
+
+/*! Calculates the SSC Transmit Clock Mode Register value given the desired
+    \a sampleSize (in bytes) and \a numChannels */
+#define AK4641_TCMR(sampleSize, numChannels) \
+           (0x02 /* LibV3 constant is not valid */ \
+            | AT91C_SSC_CKO_NONE \
+            | AT91C_SSC_START_FALL_RF \
+            | SSC_STTDLY(1) \
+            | SSC_PERIOD(sampleSize * 8 * numChannels))
+
+/*! Calculates the SSC Transmit Frame Mode Register value given the desired
+    \a sampleSize (in bytes) and \a numChannels */
+#define AK4641_TFMR(sampleSize, numChannels) \
+           (SSC_DATLEN(sampleSize * 8) \
+            | AT91C_SSC_MSBF \
+            | SSC_DATNB(numChannels) \
+            | SSC_FSLEN(sampleSize * 8) \
+            | AT91C_SSC_FSOS_NEGATIVE)
+
+/*! Calculates the SSC Received Clock Mode Register value given the desired
+    \a sampleSize (in bytes) and \a numChannels */
+#define AK4641_RCMR(sampleSize, numChannels) \
+            (AT91C_SSC_CKS_TK \
+             | AT91C_SSC_CKO_NONE \
+             | AT91C_SSC_CKI \
+             | AT91C_SSC_START_TX \
+             | SSC_STTDLY(1) \
+             | SSC_PERIOD(sampleSize * 8 * numChannels))
+
+/*! Calculates the SSC Receive Frame Mode Register value given the desired
+    \a sampleSize (in bytes) and \a numChannels. */
+#define AK4641_RFMR(sampleSize, numChannels) \
+            (SSC_DATLEN(sampleSize *8) \
+             | AT91C_SSC_MSBF \
+             | SSC_DATNB(numChannels) \
+             | SSC_FSLEN(sampleSize * 8) \
+             | AT91C_SSC_FSOS_NEGATIVE)
+
+//------------------------------------------------------------------------------
+//         Exported functions
+//------------------------------------------------------------------------------
+      
+extern inline void AK4641_Configure(AT91S_TWI *twi);
+extern inline void AK4641_SetMuted(AT91S_TWI *twi, unsigned char muted);
+
+#endif //#ifndef AK4641_H
+