Multidimensional aspects of an ASIC bus structure

Details Multidimensional aspects of an ASIC bus structure Multidimensional aspects of an ASIC bus structure

1996-06-24

1998-05-12

Olms, Douglas W.

Multiplex communications

Network configuration determination

In a bus system

370462, 370532, 34082505, H04J 300

Patent

active

057516995

ABSTRACT:
A hierarchial bus structure having at least three dimensions provides improved interconnect flexibility between nodes located on one or more levels of the structure. Nodes are defined on at least first and second "horizontal" (or "H") rings, the rings being coupled by at least one "vertical" (or "V") ring. Each node is identified in terms of its (H,V) coordinates in the hierarchial interconnect structure, and an M-dimensional structure will provide an M-way multiplex unit at each node. For an M=3, e.g., three-dimensional structure, each multiplex unit has three-inputs, a Localout, a Vin, and an Hin input, and couples one of these inputs to an output port in response to a Local select arbitration signal. The output signal is coupled to Hout and Vout, and to Localin. Nodes on the same horizontal level will drive their Hin signal to Vout and Hout, whereas all other nodes receive the Vin signal. The arbitration select signals may reconfigure the overall bus structure dynamically or statically, preferably according to demand of the nodes required interconnection. Providing additional vertical rings provides redundancy and can reduce latency time. Because the multi-dimensional hierarchial structure is point-to-point, low module current may be used, the width of the metallized bus traces may be reduced, and contention-type overlap damage is minimized.

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