International Business Machines Corporation

Michael D Cesky

John William Zack

Mark R Beckenbaugh

Nicholas G Young

Jason J Freerkesn

James David Strom

Laura Marie Zumbrunnen

Jay A Lawrence

Lily L Wang

In a method of routing a wire to a shape in an integrated circuit for minimizing undesirable jog creation during a masking process, a plurality of possible placements of the wire relative to a selected edge of the shape resulting in the wire being connected to the shape are determined. A cost is assigned to each placement, the cost indicating an amount of jog that would be created in the masking process corresponding to the placement, wherein a greater cost indicates that a greater jog would be created in the masking process than would be created by a placement assigned a lesser cost. A placement having a lowest cost of the plurality of possible placements is selected.

Auto-routing small jog eliminator

A method and enhanced phase-locked loop (PLL) circuit enable effective testing of the PLL. A phase frequency detector generates a differential signal, receiving a reference signal and a feedback signal of an output signal of the PLL circuit. A charge pump is coupled to the phase frequency detector receiving the differential signal. The charge pump applies either negative or positive charge pulses to a low-pass filter, which generates a tuning voltage input applied to a voltage controlled oscillator. A first divider is coupled to the voltage controlled oscillator receives and divides down the VCO output signal, providing the output signal of the PLL circuit. A second divider receives the output signal of the PLL circuit and provides the feedback signal to the phase frequency detector. The output signal of PLL circuit is applied to a clock distribution.

Method and enhanced phase locked loop circuits for implementing effective testing

A method for automatic wire size modification comprising the steps of routing a wire to a source; detecting a first size differential between the wire and the source by calculating a width difference between a width of the wire and a width of the source, and dividing the width difference by the width of the wire; and modifying a size of the wire if the first size differential is less than a maximum width percentage and if a length of the source is less than a length range specified by a user.

System and method for auto-routing jog elimination

A method for automatic wire size modification comprising the steps of routing a wire to a source; detecting a first size differential between the wire and the source by calculating a first width difference between a length of the wire and a width of the source, and dividing the first width difference by the width of the source; detecting a second size differential between the wire and the source if the first size differential is less than a maximum length percentage by calculating a second width difference between the width of the source and a width of the wire, and dividing the second width difference by the width of the source; and modifying a size of the wire if the second size differential is less than a maximum width percentage.

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Rochester, MN, United States of America

Michael D Cesky