Integrated circuit providing direct access to...

Details Integrated circuit providing direct access to... Integrated circuit providing direct access to...

2007-08-07

2007-08-07

Le, Don (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

C326S041000, C326S046000

Reexamination Certificate

active

11152359

ABSTRACT:
A programmable integrated circuit (IC) provides high routing flexibility without the use of an output multiplexer structure. According to one embodiment, an IC includes programmable tiles arrayed in rows and columns. Output multiplexer structures are not included in the programmable tiles. Routing flexibility is provided in each tile by input multiplexers coupled between a general interconnect structure and the input terminals of a logic block, and by providing direct access from the logic block output terminals (e.g., lookup table outputs and memory element outputs) to both horizontal and vertical interconnect lines. In some embodiments, the logic block output signals can also drive “diagonal” interconnect lines in the general interconnect structure.

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