Lsi Logic Corporation

Sun Microsystems, Inc.

Tai-Yu Chou

Satyanarayana Nishtala

Sanjay Dandia

Michael C Freda

Prabhansu Chakrabarti

Sadanand R Patil

Jayarama N Shenoy

One embodiment of the present invention provides a system for defining signal timing for an integrated circuit device. The system operates by first creating a virtual timing reference plane for the integrated circuit device. A first signal line is then routed from a semiconductor die within the integrated circuit package to a first external connection of the integrated circuit package. Next, the system generates a first escape pattern for a first circuit trace on a printed circuit board from the first external connection to the virtual timing reference plane. This first escape pattern specifies a route from where the first external connection meets the printed circuit board to the virtual timing reference plane. Finally, the system establishes a first set of signal timings for a combination of the first signal line and the first circuit trace at the virtual timing reference plane.

Method and apparatus for defining signal timing for an integrated circuit device

A semiconductor device package for one or more semiconductor dice having core circuits and input-output circuits uses a package substrate having one pair of biplanar conductive planes and another pair of biplanar conductive planes. The pairs of planes are positioned in a coplanar relationship between the package substrate top surface and bottom surface. The top surface has lands connected to the conductive planes and to the power bond pads for the core circuits and input-output circuits on the semiconductor die. The top surface has many top traces connected to the signal bond pads on the semiconductor die. The package substrate may have a die paddle connected to one land and/or thermal vias to conduct heat away from the semiconductor die. Power may be supplied to die core circuits through one pair of planes and to die input-output circuits through another pair of planes to decouple the core circuits from the input-output circuits and minimize noise induced false switching in either set of circuits. The core circuits and the input-output circuits may be powered by the same power supply or separate power supplies.

Wire bondable package design with maxium electrical performance and

A semiconductor device package for one or more semiconductor dice uses a package substrate having one pair of biplanar conductive planes and another pair of biplanar conductive planes. The pairs of planes are positioned in a coplanar relationship between the top traces and the bottom traces. Power may be supplied to die core circuits through one pair of planes and to die input-output circuits through another pair of planes to decouple the core circuits from the input-output circuits and minimize noise induced false switching in either set of circuits. The core circuits and the input-output circuits may be powered by the same power supply or separate power supplies.

Apparatus to decouple core circuits power supply from input-output

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Pleasanton, CA, United States of America

Tai-Yu Chou