A regular circuit structure called a River PLA and its reconfigurable version, Glacier PLA, are presented. River PLAs provide greater regularity than circuits implemented with standard-cells. Conventional optimization stages such as technology mapping, placement and routing are eliminated. These two features make the River PLA a highly predictable structure. Glacier PLAs can be an alternative to FPGAs, but with a simpler and more efficient design methodology. Categories and Subject Descriptors B.6.3 [Logic Design]: Design Aids Automatic synthesis. General Terms Algorithms. Keywords Programmable Logic Array, River routing.
Fan Mo, Robert K. Brayton