解壓密碼:www.elecfans.com 隨著微電子技術(shù)的迅速發(fā)展以及集成電路規(guī)模不斷提高,對電路性能的設(shè)計
要求越來越嚴(yán)格,這勢必對用于大規(guī)模集成電路設(shè)計的EDA 工具提出越來越高的
要求。自1972 年美國加利福尼亞大學(xué)柏克萊分校電機(jī)工程和計算機(jī)科學(xué)系開發(fā)
的用于集成電路性能分析的電路模擬程序SPICE(Simulation Program with IC
Emphasis)誕生以來,為適應(yīng)現(xiàn)代微電子工業(yè)的發(fā)展,各種用于集成電路設(shè)計的
電路模擬分析工具不斷涌現(xiàn)。HSPICE 是Meta-Software 公司為集成電路設(shè)計中
的穩(wěn)態(tài)分析,瞬態(tài)分析和頻域分析等電路性能的模擬分析而開發(fā)的一個商業(yè)化通
用電路模擬程序,它在柏克萊的SPICE(1972 年推出),MicroSim公司的PSPICE
(1984 年推出)以及其它電路分析軟件的基礎(chǔ)上,又加入了一些新的功能,經(jīng)
過不斷的改進(jìn),目前已被許多公司、大學(xué)和研究開發(fā)機(jī)構(gòu)廣泛應(yīng)用。HSPICE 可
與許多主要的EDA 設(shè)計工具,諸如Candence,Workview 等兼容,能提供許多重要
的針對集成電路性能的電路仿真和設(shè)計結(jié)果。采用HSPICE 軟件可以在直流到高
于100MHz 的微波頻率范圍內(nèi)對電路作精確的仿真、分析和優(yōu)化。在實際應(yīng)用中,
HSPICE能提供關(guān)鍵性的電路模擬和設(shè)計方案,并且應(yīng)用HSPICE進(jìn)行電路模擬時,
其電路規(guī)模僅取決于用戶計算機(jī)的實際存儲器容量。
The HSPICE Integrator Program enables qualified EDA vendors to integrate their products with the de facto standard HSPICE simulator, HSPICE RF simulator, and WaveView Analyzer™. In addition, qualified HSPICE Integrator Program members have access to HSPICE integrator application programming interfaces (APIs). Collaboration between HSPICE Integrator Program members will enable customers to achieve more thorough design verification in a shorter period of time from the improvements offered by inter-company EDA design solutions.
解壓密碼:www.elecfans.com 隨著微電子技術(shù)的迅速發(fā)展以及集成電路規(guī)模不斷提高,對電路性能的設(shè)計
要求越來越嚴(yán)格,這勢必對用于大規(guī)模集成電路設(shè)計的EDA 工具提出越來越高的
要求。自1972 年美國加利福尼亞大學(xué)柏克萊分校電機(jī)工程和計算機(jī)科學(xué)系開發(fā)
的用于集成電路性能分析的電路模擬程序SPICE(Simulation Program with IC
Emphasis)誕生以來,為適應(yīng)現(xiàn)代微電子工業(yè)的發(fā)展,各種用于集成電路設(shè)計的
電路模擬分析工具不斷涌現(xiàn)。HSPICE 是Meta-Software 公司為集成電路設(shè)計中
的穩(wěn)態(tài)分析,瞬態(tài)分析和頻域分析等電路性能的模擬分析而開發(fā)的一個商業(yè)化通
用電路模擬程序,它在柏克萊的SPICE(1972 年推出),MicroSim公司的PSPICE
(1984 年推出)以及其它電路分析軟件的基礎(chǔ)上,又加入了一些新的功能,經(jīng)
過不斷的改進(jìn),目前已被許多公司、大學(xué)和研究開發(fā)機(jī)構(gòu)廣泛應(yīng)用。HSPICE 可
與許多主要的EDA 設(shè)計工具,諸如Candence,Workview 等兼容,能提供許多重要
的針對集成電路性能的電路仿真和設(shè)計結(jié)果。采用HSPICE 軟件可以在直流到高
于100MHz 的微波頻率范圍內(nèi)對電路作精確的仿真、分析和優(yōu)化。在實際應(yīng)用中,
HSPICE能提供關(guān)鍵性的電路模擬和設(shè)計方案,并且應(yīng)用HSPICE進(jìn)行電路模擬時,
其電路規(guī)模僅取決于用戶計算機(jī)的實際存儲器容量。
The HSPICE Integrator Program enables qualified EDA vendors to integrate their products with the de facto standard HSPICE simulator, HSPICE RF simulator, and WaveView Analyzer™. In addition, qualified HSPICE Integrator Program members have access to HSPICE integrator application programming interfaces (APIs). Collaboration between HSPICE Integrator Program members will enable customers to achieve more thorough design verification in a shorter period of time from the improvements offered by inter-company EDA design solutions.
cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide.
the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972.
here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation.
you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.