High fan-out signal routing systems and methods

Details High fan-out signal routing systems and methods High fan-out signal routing systems and methods

2007-02-06

2009-08-18

Barnie, Rexford N. (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Array

C326S039000

Reexamination Certificate

active

07576563

ABSTRACT:
Systems and methods are disclosed herein to provide high fan-out signal routing. For example, in accordance with an embodiment of the present invention, a programmable logic device includes a plurality of logic blocks; an interconnect structure adapted to route signals among the logic blocks; and a secondary routing network adapted to route signals among the logic blocks. The secondary routing network may include a plurality of horizontal splines adapted to route signals within the programmable logic device; a plurality of vertical spline taps adapted to route signals within the programmable logic device; a plurality of common interface blocks adapted to route signals between the horizontal splines and the vertical spline taps; and a plurality of horizontal secondary branches adapted to route signals from the vertical spline taps to the logic blocks.

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