Communication mechanism

Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus interface architecture

Reexamination Certificate

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Details

C710S317000, C710S240000

Reexamination Certificate

active

07155557

ABSTRACT:
The invention provides an interconnection architecture for semiconductor devices. Cross bar switches are traditionally placed in the center of the IC. However, this location may also be the preferred location for the centralized logic in the IC. This invention, known as a cross bar ring or CBR, provides cross bar switch functionality in a manner that can be easily distributed around the chip. Typically, it can fit in the routing channels between other functional blocks, thereby allowing other centralized functions to be placed in the center of the IC. The CBR is defined so that it can be partitioned into separate modules, which greatly aids in the placement and routing of wires. Furthermore, the architecture is defined such that the CBR can use storage elements, allowing it to be pipelined so that the wire distances can be increased while still maintaining a high internal clock speed. The use of storage elements also allows the CBR to provide a deterministic delay between any two locations on the IC, and can, if desired, insure a constant delay regardless of source and destination.

REFERENCES:
patent: 4852083 (1989-07-01), Niehaus et al.
patent: 5432708 (1995-07-01), Mohsen
patent: 5577204 (1996-11-01), Brewer et al.
patent: 6154462 (2000-11-01), Coden
patent: 2003/0103501 (2003-06-01), Clem et al.
High Performane Crossbar Switch, Xilinx, 2002.
A 1024-Pin Plastic Ball Grid Array, Aptix Corp, 1994.
Aptix' Corp's AX1024R, Highbeam Research, 1992.
Definition of Field Programmable Gate Array, Wikipedia.com.
A New Field Programmable Gate Array: Architecture and Implementation, Cho et al.1995.

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