Rajeev Jayaraman

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FPGAs have been growing at a rapid rate in the past few years. Their ever-increasing gate densities and performance capabilities are making them very popular in the design of digital systems. In this paper we discuss the state-of-the-art in FPGA physical design. Compared to physical design in traditional ASICs, FPGAs pose a different set of requirements(More)
State-of-the-art FPGAs possess I/O resources that can be configured to support a wide variety of I/O standards [1]. In such devices, the I/O resources are grouped into banks. One of the consequences of the banked organization is that all of the I/O objects that are placed within a bank must use „compatible“ I/O standards. The compatibility of I/O standards(More)
In the development of new FPGA architectures, a designer must balance speed, density and routing flexibility. In this paper, we discuss a new FPGA architecture based on a patented [1], novel, segmented routing fabric that is targeted to high performance and predictability but does not sacrifice routability or area efficiency. Current segmented architectures(More)
There was a time - in the dim historical past - when foundries actually made ASICs with only 5000 to 50,000 logic gates. But FPGAs and CPLDs conquered those markets and pushed ASIC silicon toward opportunities with more logic, volume, and speed. Today's largest FPGAs approach the few-million-gate size of a typical ASIC design, and continue to sprout(More)
Simulated annealing algorithms for VLSI layout tasks produce solutions of high quality but are computationally expensive. This thesis examines some parallel approaches to accelerate simulated annealing using message-passing multiprocessors with a hypercube architecture. Floorplanning is chosen as a typical application of annealing in physical design.(More)
Platform FPGAs have introduced complex reconfigurable black-boxes for complete system on chip implementation. With rising expectations from these architectures there is a need to perform optimizations across the FPGA slice fabric and the newly introduced black boxes to maximize performance gains. In this paper, we discuss a timing driven reconfiguration(More)
There was a time – in the dim historical past – when foundries actually made ASICs with only 5000 to 50,000 logic gates. But FPGAs and CPLDs conquered those markets and pushed ASIC silicon toward opportunities with more logic, volume, and speed. Today's largest FPGAs approach the few-million-gate size of a typical ASIC design, and continue to sprout(More)
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