Cmedia’s CM7001 is an audio processor chip optimized for mobile phone environmental noise cancellation solutions. This document is a user guide for CM7001 demo board. The board already contains two (2) omni-directional microphones and could be used as an accessory handset that connects to an actual mobile phone’s 4-pin earphone jack for a call. Typically the mobile phone will switch the receiver sounds and mic-in to the plug-in external accessory as a regular mobile phone headset. The users can talk using the board while holding the phone but the telecommunication is still through the actual phone. Shown below is the connection diagram:
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