The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 2012
Filed:
Dec. 14, 2006
Schuyler E. Shimanek, Albuquerque, NM (US);
William E. Allaire, West Chester, PA (US);
Steven J. Zack, Burlington, NJ (US);
Schuyler E. Shimanek, Albuquerque, NM (US);
William E. Allaire, West Chester, PA (US);
Steven J. Zack, Burlington, NJ (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
A multiplier-accumulator includes a pre-adder, a multiplier, an accumulator, multiplexing logic, and control logic. The pre-adder is configured to sum a first input and a second input to produce a pre-sum output. The multiplier is configured to multiply a third input and the pre-sum output to produce a product output. The accumulator is configured to sum a pair of accumulator inputs to produce a sum output. The multiplexer is configured to select the pair of accumulator inputs from a plurality of multiplexer inputs, where the plurality of multiplexer inputs includes the product output and the sum output. The control logic is configured to control operation of the pre-adder, the accumulator, and the multiplexer logic. In an example, each of the first input, the second input, the third input, and the sum output is coupled to programmable interconnect of a programmable logic device.