BANDWIDTH EFFICIENT INSTRUCTION-DRIVEN MULTIPLICATION ENGINE
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United States of America Patent
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Issued Date -
Mar 13, 2014
app pub date -
Oct 16, 2013
filing date -
Jan 10, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Multiplication engines and multiplication methods are provided for a digital processor. A multiplication engine includes multipliers, each receiving a first operand and a second operand; a local operand register having locations to hold the first operands for respective multipliers; a first operand bus coupled to the local operand register to supply the first operands from a compute register file to the local operand register; a second operand bus coupled to the plurality of multipliers to supply one or more of to the second operands from the compute register file to respective multipliers; and a control unit responsive to a digital processor instruction to supply the first operands from the local operand register to respective multipliers, to supply the second operands from the compute register file to respective multipliers on the second operand bus and to multiply the first operands by the respective second operands in the respective multipliers, wherein one or more of the first operands in the local operand register are reused by the multipliers in two or more multiplication operations.
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