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Modular digital signal processing circuitry with optionally usable, dedicated connections between modules of the circuitry

  • US 8,549,055 B2
  • Filed: 03/03/2010
  • Issued: 10/01/2013
  • Est. Priority Date: 03/03/2009
  • Status: Expired due to Fees
First Claim
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1. Circuitry that is usable to perform a selectable one of (1) one M-bit by M-bit (“



  • M”

    ) multiplication and (2) two N-bit by N-bit (“



    N”

    ) multiplications, where M is equal to 1.5N, comprising;



    N multiplier circuitry;

    0.5N×

    M multiplier circuitry;

    0.5N×

    N multiplier circuitry;

    first circuitry for additively combining outputs of the 0.5N×

    M multiplier circuitry and outputs of the 0.5N×

    N multiplier circuitry;

    shifter circuitry for shifting outputs of the N×

    N multiplier circuitry by a selectable one of (1) zero bits positions and (2) N bit positions toward greater arithmetic significance; and

    second circuitry for additively combining outputs of the shifter circuitry and outputs of the first circuitry.

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