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The CMX860 includes a programmable IIR based filter which can be used to detect the frequencies not included as standard, is their a description of tool that can help me use this function?

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The CMX860 includes a programmable IIR based filter which can be used to detect the frequencies not included as standard, is their a description of tool that can help me use this function?

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A. The CMX860 IIR filter is a similar design to that included with the related CMX868 V.22bis modem IC.A Microsoft Excel based Application Note is available that describes how the 2 biquad IIR filter functions and how the coefficients for the filter can be programmed.The application note can be downloaded from the website via the following link: 868FL_1.htm.

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