Flashcards
FPGA Architecture
Cards in this deck (6)
- 1—What is Xilinx known for?
Xilinx is the inventor of the FPGA, programmable SoCs, and now, the ACAP. ... Xilinx delivers the most dynamic processing technology in the industry - 2The earliest reconfigurable computing devices were programmable array logic (PAL) architectures. PALs consisted of an array of and gates feeding another array of or gates, as shown in Fig. 3, and could implement any Boolean logic expression as s a two-level sum-of-products function.
- 3—What are the problems in PAL?
PALs do not scale well; as device logic capacity increased, the wires forming the and/or arrays became increasingly longer and slower and the number of programmable switches required grew quadratically. - 4CPLD is the combination of PALComplex programmable logic devices
(CPLDs) kept the and/or arrays as the basic logic elements, but attempted to solve the scalability challenge by integrating multiple PALs on the same die with a crossbar interconnect between them at the cost of more complicated design tools. - 5Shortly after, Xilinx pioneered the first lookup-table-based (LUT-based) FPGA in 1984, which consisted of an array of SRAM-based LUTs with programmable interconnect between them.This style of reconfigurable devices was shown to scale very well, with LUTs achieving much higher area efficiency compared to the and/or logic in PALs and CPLDs. LUT-based architectures became increasingly dominant and today LUTs form the fundamental logic element in all commercial FPGAs.
- 6—In digital circuit design, the register-transfer level (RTL) is a design abstraction that models a synchronous digital circuit in terms of the flow of digital signals (data) between hardware registers, and the logical operations performed on those signals.
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- Information Technology Flashcards on FPGA Architecture , created by Hina Anser on 08/12/2021.
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- Hina Anser
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