Method of implementing a variable number of filter sections for digital signal processing

A method of equalizing an input signal for a digital signal processor (DSP) which produces an output signal having a desired frequency response, comprising the steps of:

• transferring a jump and lookup table from nonvolatile memory to volatile memory, said jump and lookup table containing addresses to execute equalization structures of the DSP;
• transferring a plurality of filter coefficients from said nonvolatile memory to said volatile memory, said plurality of filter coefficients provide optimum equalization structures to obtain said desired frequency response;
• retrieving one of said addresses by use of a first pointer to execute a first equalization structure;
• retrieving a corresponding set of filter coefficients by use of a second pointer to provide a first equalization structure;
• producing an intermediate result in response to filtering said input signal;
• incrementing said first pointer to next said addresses of said jump and lookup table to execute a subsequent equalization structure;
• incrementing said second pointer to next said corresponding set of filter coefficients to provide a subsequent equalization structure;
• transferring said intermediate signal to said subsequent equalization structure for additional filtering,
• incrementing said first pointer and said second pointer to provide next said subsequent equalization structure for additional filtering;
• transferring said intermediate result as an equalized output signal when said first pointer indicates filtering is complete.

A data system for equalizing a data signal to produce a desired frequency response, comprising:

• a digital signal processor (DSP) equalization structure having settable coefficients and invokable on demand for filtering a data signal to produce a filtered signal;
• data storage storing said filtered signal as an intermediate result during processing of said data signal;
• a coefficient table containing a plurality of coefficient sets, each set being adapted to be transferred to said filter structure as said settable coefficients to provide a filter characteristic for said DSP equalization structure;
• a jump and lookup table containing addresses to execute said DSP equalization structure to produce said desired frequency response by sequentially using said intermediate result as said input signal;
• a nonvolatile memory;
• a volatile memory;
• transferring said coefficients sets and said jump and lookup table from said nonvolatile memory to said volatile memory;