This chapter contains general information t hat will be useful to know before using the dsPIC ® DSC Line Echo Cancellation Library. Ite ms discussed in this chapter include: • Document Layout • Conventions Used in this Guide • Warranty Registration • Recommended Reading • The Microchip Web Site • Development Systems Customer Change Notification Service • Customer Support • Document Revision History dsPIC DSC Line Echo Cancellation Library User’s Guide 2005-2011 Microchip Technology Inc. DS70170D Note the following details of the code protection feature on Microchip devices: Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Mi……