Purpose of IEEE library in VHDL By Srujana Aramalla Instructor: Dr.Albert B. Grubbs.

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Presentation transcript:

Purpose of IEEE library in VHDL By Srujana Aramalla Instructor: Dr.Albert B. Grubbs

Design File It is an ASCII file containing VHDL source. A compiled design unit is stored in a design library. Each design library has a logical name with which it is referenced inside a VHDL description.

IEEE standards (Brief history) IEEE 1076 IEEE 1164 IEEE IEEE

IEEE design library Contains the package STD_LOGIC_1164, which defines a nine-value logic type and its associated overloading functions and other utilities. Parts of the IEEE library can be included in an entity by inserting lines like these before entity declaration: library ieee; use ieee.std_logic_1164.all;

References IEEE Standard Multivalue Logic System for VHDL Model Interoperability (Std_Logic_1164), Sdt , IEEE, Piscataway, IEEE, IEEE Standard VHDL Language Reference Manual, IEEE Std , The Institute of Electrical and Electronics Engineers, J. Bhasker, “VHDL Primer,” 3rd Edition, Prentice Hall, Upper Saddle River, 1998.