Ball assignment schemes for integrated circuit packages
AssigneeLSI Logic Corporation
InventorsArun Ramakrishnan, Anand Govind
Life of this patent
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Abstract
The present disclosure is directed to ball assignment schemes for ball grid array packages in integrated circuits with increased signal count. The ball assignment scheme includes an array of electrical contacts. The array has a first diagonal including a pair of signal contacts adjacent to a pair of first-type voltage supply contacts. The array further includes a crossing diagonal having a pair of adjacent second-type voltage supply contacts, which crosses the first diagonal between the pair of signal contacts such that the pair of second-type voltage supply contacts oppose one another relative to the first diagonal.
Claims20
A grid array of electrical contacts in an integrated circuit package, the grid array comprising:
- a first diagonal including a pair of adjacent signal contacts and an adjacent a pair of adjacent first-type voltage supply contacts;
- and
- a crossing diagonal including a pair of adjacent second-type voltage supply contacts, which crosses the first diagonal between the pair of signal contacts such that the pair of second-type voltage supply contacts oppose one another relative to the first diagonal.
An array of electrical contacts on a substrate, the array comprising:
- a plurality of parallel and spaced-apart first diagonals, each first diagonal including signal contacts and first-type voltage supply contacts distributed along the first diagonal;
- and
- a plurality of second diagonals located between and parallel to the first diagonals, each second diagonal including a plurality of signal contacts, wherein the second diagonals that are adjacent the first diagonals further include second-type voltage supply contacts distributed along the second diagonal such that pairs of the second-type voltage supply contacts oppose one another relative to the corresponding first diagonal.
A grid array of electrical contacts in an integrated circuit package, the grid array comprising:
- a plurality of adjacent grid boxes;
- wherein each grid box including sixteen electrical contacts arranged in a four rows of four contacts;
- wherein the sixteen electrical contacts in each grid box include twelve signal contacts, two ground contacts along a first diagonal, and two power contacts along a second diagonal;
- and
- wherein the first diagonal crosses the second diagonal in the grid box.
Dependencies are inferred from the claim text.