Low cost and high speed 3 load printed wiring board bus topology
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United States of America Patent
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May 13, 2003
Grant Date -
Aug 15, 2002
app pub date -
Apr 3, 2002
filing date -
Jun 19, 2000
priority date (Note) -
Expired
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Abstract
A multi layer printed circuit board with a 3-load topology is disclosed. First, second, and third integrated circuit (IC) printed wiring board packages having first, second, and third sets of terminals respectively are mounted on opposite sides of the board so that the second set of terminals are directly opposite the third set of terminals. Each package contains an IC die coupled to the respective set of terminals. The IC die in the first package is substantially identical to the one contained in the second package, and different than the one contained in the third package. For improved fanout of the metal lines that interconnect the first package to the second and third packages, each of the first, second, and third sets of terminals in the packages is arranged in substantially a U-shape. Each set of terminals has the same set of signal assignments of a parallel bus implemented by metal lines in the board. The 3-load topology is particularly useful for personal computer motherboard units having twin processors and a bridge chip set, yielding a motherboard having significantly lower number of metal layers, a faster bus and significantly improved noise margin, all with high density IC packages on a wide parallel bus.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- INTEL CORPORATION
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Dabral, Sanjay | Milpitas, CA | 154 | 2038 |
Zeng, Ming | San Jose, CA | 72 | 617 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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