The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Simulators >> AMS Simulators >> AMS Simulator ConnectLib problem https://designers-guide.org/forum/YaBB.pl?num=1249327323 Message started by Deb on Aug 3rd, 2009, 12:22pm |
Title: AMS Simulator ConnectLib problem Post by Deb on Aug 3rd, 2009, 12:22pm I am new to Cadence AMS simulators. I have some circuits for which the connect modules which are supplied with cadence distribution in affirma_ams is not sufficient. I need to customize that rules. I have customized it properly. But whenever I try to compile and elaborate the design by "netlist and run" cadence complains and says that it is unable to find the customized connect rules. But I have kept the customized rules in the same connectLib in my project directory...I am using spectre as analog solver..please help and please suggest suitable solutions.. |
Title: Re: AMS Simulator ConnectLib problem Post by May on Aug 4th, 2009, 7:02pm Actually, there are several ways to add connection rules. 1. built-in ( or modified built-in) 2. user-defined ( specify library, cell, view) 3. use genConnRulesFile to create connectRules.il and put it in the searching path I guess ADE didn't find your modified connect rule in the default searching location. Make sure, you put it in your working library (1,2) or searching directory (3). |
Title: Re: AMS Simulator ConnectLib problem Post by Riad KACED on Aug 12th, 2009, 10:03am Hi there, there are few steps that you need to follow to create a customized connect module for AMS in ADE: 1. Create the verilogAMS files for your connect Modules. Say I want to create a 1V connect module with following spec: Vsup=1.0, Vthi=0.666, Vtlo=0.333, Vlow=0 I copy the 1.8V connect module from my IUS stream , i.e $IUSHOME/tools/affirma_ams/etc/connect_lib/connectLib/ConnRules_18V_full_fast/connect/verilog.vams The ConnRules_1V0_full_fast I'm about to create needs the following files : Bidir_2.vams ConnRules_1V0_full_fast.vams E2L_2.vams E2R.vams ER_bidir.vams L2E_2.vams L2E_2_CPF.vams R2E_2.vams All these files have been copied form : $IUSHOME/tools.lnx86/affirma_ams/etc/connect_lib 2. Prepare the environment: You need to have a correct hdl.var and cds.lib to compile the libraries. - An example of hdl.var is: ########## softinclude $AMSHOME/inca/files/hdl.var define ncuse5x define cdslib ./cds.lib Define WORK rkLib ########## - An example of cds.lib is ------ softinclude $AMSHOME/tools/inca/files/cds.lib DEFINE analogLib $CDSHOME/tools/dfII/etc/cdslib/artist/analogLib DEFINE basic $CDSHOME/tools/dfII/etc/cdslib/basic DEFINE sample $CDSHOME/tools/dfII/samples/cdslib/sample Define rkLib ./rkLib Define myconnectLib ./rk_connect_lib/rkConnectLib ------ 3. Compile the above connect modules using the following commands: ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/ ConnRules_1V0_full_fast.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/L2E_2.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/E2L_2.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/Bidir_2.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/E2R.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/R2E_2.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/ER_bidir.vams ncvlog -ams -use5x -work myconnectLib ./rk_connect_lib/L2E_2_CPF.vams 4. Create a connectRules.il file with the above connect modules using the following command: genConnRulesFile -destpath ./rk_connect_lib/rkConnectLib -lib rkConnectLib ./rk_connect_lib/*.vams 5. copy over rk_connect_lib into your cadence working dir and update your cds.lib by adding: DEFINE rkConnectLib ./rk_connect_lib/rkConnectLib 6. Fire up Cadence and the ADE and load the created connect module. they must come in the list of available connect modules. I have assumed you have created the necessary UNIX directories and file to go through the flow. Also, make sure that you put the 'connectRules.il' file in the connectLib library. There is a snapshot of the directory tree . |-- cds.lib |-- compileConnect (sh script for step3) |-- createConnectRulesFile (sh script for step4) |-- hdl.var |-- rk_connect_lib | |-- Bidir_2.vams | |-- ConnRules_1V0_full_fast.vams | |-- E2L_2.vams | |-- E2R.vams | |-- ER_bidir.vams | |-- L2E_2.vams | |-- L2E_2_CPF.vams | |-- R2E_2.vams | `-- rkConnectLib | |-- Bidir_2 | |-- E2L_2 | |-- E2R | |-- ER_bidir | |-- RK_CONNRULES_10V_FULL_FAST | |-- L2E_2 | |-- L2E_2_CPF | |-- R2E_2 | |-- connectRules.il | `-- inca.lnx86.172.pak |-- ncvlog.log `-- tree Cheers, Riad. |
The Designer's Guide Community Forum » Powered by YaBB 2.2.2! YaBB © 2000-2008. All Rights Reserved. |