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can I have a if statement for the config

Mooh 6 months ago

As shown in the picture, I have a global variable config, and I want to use this variable in an if statement to set another variable's value. The logic is as follows:
if((VAR("CONFIG/XX_TB/XXOhm") == "schematic_35Ohms_lumped_bw") (then = 35) (else= if((VAR("CONFIG/XX_TB/XXOhm") == "schematic_17Ohms_lumped_bw") (then = 17) (else= 25))))

This works fine when I run it in the calculator, but it doesn't seem to work during the simulation.

Frank Wiedmann 6 months ago

How about using a Parametric Set instead (see https://support.cadence.com/apex/techpubDocViewerPage?path=assembler/assemblerIC23.1/asmDesignVars.html#pgfId-1035202 and https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000v6rtEAA)?
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Andrew Beckett 6 months ago

The issue is that the syntax is wrong. VAR() with a config sweep has been supported since IC6.1.8 ISR26 (6.1.8.500.26) but your if() has incorrect syntax. The "then=" and "else=" parts are incorrect. The if function returns a value from the then and else branches, so you'd want:

if(VAR("CONFIG/XX_TB/XXOhm") == "schematic_35Ohms_lumped_bw" then 35 else if(VAR("CONFIG/XX_TB/XXOhm") == "schematic_17Ohms_lumped_bw" then 17 else 25))

alternatively you could use a case() function which might be easier to maintain than nested if() calls:

case(VAR("CONFIG/XX_TB/XXOhm") ("schematic_35Ohms_lumped_bw" 35) ("schematic_17Ohms_lumped_bw" 17) (t 25))

Andrew
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Andrew Beckett 6 months ago in reply to Andrew Beckett

Apologies - I was having difficulty replying - please see my previous edited response above which shows how you should correctly format the if statement - your syntax was incorrect.
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