alliance-support '1998
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Paulo Maciel (prmm@di.ufpe.br)
Thu, 27 Aug 1998 15:54:53 -0300

Dear Sir/Madam, I have been adopting the Alliance libraries in my reaserch (Petri nets and codesign). Right now, I am trying to apply my delay and area estimates to behavioral descriptions. Therefore, it is important to me to find out what mean the specified area (I suppose it is the number of transistors) and the respective delays (nonoseconds ?) of the Alliance library components. For instance, within a generic we may found: ENTITY sum_y IS GENERIC ( CONSTANT area : NATURAL := 2016; -- area CONSTANT cin_c0b : NATURAL := 46; -- cin_c0b CONSTANT tphl_c0b : NATURAL := 1075; -- tphl_c0b CONSTANT rdown_c0b : NATURAL := 2582; -- rdown_c0b CONSTANT tplh_c0b : NATURAL := 2057; -- tplh_c0b CONSTANT rup_c0b : NATURAL := 5150; -- rup_c0b CONSTANT cin_ci : NATURAL := 90; -- cin_ci CONSTANT tphl_ci : NATURAL := 4235; -- tphl_ci CONSTANT rdown_ci : NATURAL := 3540; -- rdown_ci CONSTANT tplh_ci : NATURAL := 5791; -- tplh_ci CONSTANT rup_ci : NATURAL := 7291; -- rup_ci CONSTANT cin_si : NATURAL := 89; -- cin_si CONSTANT tphl_si : NATURAL := 5113; -- tphl_si CONSTANT rdown_si : NATURAL := 3540; -- rdown_si CONSTANT tplh_si : NATURAL := 6761; -- tplh_si CONSTANT rup_si : NATURAL := 7291; -- rup_si CONSTANT cin_pi : NATURAL := 91; -- cin_pi CONSTANT tphl_pi : NATURAL := 3277; -- tphl_pi CONSTANT rdown_pi : NATURAL := 3540; -- rdown_pi CONSTANT tplh_pi : NATURAL := 4120; -- tplh_pi CONSTANT rup_pi : NATURAL := 7291 -- rup_pi ); Where may I find a document that explaines theses numbers (nonoseconds, transistor ?) and what these words (tphl_pi, rup_c0b, etc) stand for ? Thank you in advance for your attention. Regards, Paulo Maciel

 



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