Results 211 to 220 of about 1,071,906 (249)

Sr–Nd isotope geochemistry and petrogenesis of the Chah-Shaljami granitoids (Lut Block, Eastern Iran)

Journal of Asian Earth Sciences, 2011
Abstract Chah-Shaljami porphyritic granitoids belong to the Lut Block volcanic–plutonic belt of central eastern Iran. These intrusive rocks are mostly quartz monzonites, granodiorites and diorites. Geochemical evidence reveals that they are co-genetic and that they have features typical of high-K calc-alkaline to shoshonitic rocks from volcanic arc ...
M H Karimpour
exaly   +3 more sources

Geochronology of high-grade metamorphic rocks from the Anjul area, Lut block, eastern Iran

Journal of Asian Earth Sciences, 2014
Abstract U–Pb and Rb–Sr geochronology has been used to constrain robust ages for leucosomes and high-grade gneisses from the Anjul area in the eastern part of the Lut block, Iran. The new results do not support the previously suggested Proterozoic age for this occurrence, but instead reveal the importance of Jurassic and Cretaceous magmatic and/or ...
Nickolay Rodionov, Michael Brocker
exaly   +2 more sources

A Low Complexity LUT-Based Digital Predistortion Block With New Pruning Method

IEEE Microwave and Wireless Components Letters, 2022
Fadhel Ghannouchi, Xin Hu, Zhijun Liu
exaly   +2 more sources

A Radiation Hard Lut Block with Auto-Scrubbing

2011 21st International Conference on Field Programmable Logic and Applications, 2011
We present a Silicon-on-Insulator based Look-up Table and configuration memory for application within a radiation hard reconfigurable system. The configuration storage includes a non-volatile EEPROM built using a standard single poly silicon Silicon on Insulator CMOS process linked to a Schmitt sense amplifier and transmission gate LUT structure.
Kashfia Haque, Paul Beckett
openaire   +2 more sources

Technology Mapping of Logic Functions in LUT Blocks

2020
The main goal of decomposition is an effective technology mapping of a function in an FPGA. A multioutput function is mapped to logic blocks, which in the simplest case can be simply LUTs. These blocks can carry out any logic function with a limited (usually small) number of variables.
Marcin Kubica, Adam Opara, Dariusz Kania
openaire   +1 more source

Design and Synthesis of Programmable Logic Block With Mixed LUT and Macrogate

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2009
Small gates, such as AND2, XOR2, and MUX2, have been mixed with lookup tables (LUTs) inside programmable logic blocks (PLBs) to reduce area and power and increase performance in FPGAs. However, it is unclear whether incorporating macrogates with wide inputs inside PLBs is beneficial.
Yu Hu 0002, Satyaki Das, Steven Trimberger, Lei He 0001   +3 more
openaire   +1 more source

Designing efficient input interconnect blocks for LUT clusters using counting and entropy

Proceedings of the 2007 ACM/SIGDA 15th international symposium on Field programmable gate arrays, 2007
In a cluster-based FPGA, the interconnect from external routing tracks and cluster feedbacks to the LUT inputs consumes significant area, and no consensus has emerged among different implementations (e.g., 1-level or 2-level). In this paper, we model this interconnect as a unified input interconnect block (IIB).
Wenyi Feng, Sinan Kaptanoglu
openaire   +2 more sources

Exact tree-based FPGA technology mapping for logic blocks with independent LUTs

Proceedings 1998 Design and Automation Conference. 35th DAC. (Cat. No.98CH36175), 1998
The logic blocks (CLBs) of a lookup table (LUT) based FPGA consist of one or more LUTs, possibly of different sizes. In this paper, we focus on technology mapping for CLBs with several independent LUTs of two different sizes (called ICLBs). The Actel ES6500 family is an example of a class of commercially available ICLBs.
Madhukar R. Korupolu, K. K. Lee, D. F. Wong 0001   +2 more
openaire   +1 more source

Modeling the Arithmetic Decomposition of DA-LUT Block for Heterogeneous FPGA Structures

International Journal of Electronics and Telecommunications, 2012
Abstract Distributed arithmetic is well known technique of designing FIR filters in FPGA devices. The quality of such filter implementation strongly depends on synthesis results of the DALUT block. Heterogeneity of modern FPGA structures introduces new possibilities into implementation process, that may lead to better results, but also makes it ...
Michał Staworko, Mariusz Rawski
openaire   +1 more source

Reflections on the rigidity of the Lut Block and recent crustal deformation in eastern Iran

Tectonophysics, 1975
Abstract Imagery from the first Earth Resources Technology Satellite passes over east-central Iran are interpreted with special emphasis on geomorphology of the structural trends in the area. Several units of arcuate structure are named and discussed.
A. Mohajer-Ashjai, H. Behzadi, M. Berberian   +2 more
openaire   +1 more source