What is cdsParams(1,2,...) ???

Hi!

I was trying to make some edits in a symbol in a PDK, when I saw on
the symbol cdsParam(1), cdsParam(2), ... what is that?

Is it a predefined (by number?) parameter that can be programmed from
CDF file?

Must any CDF parameter be mapped to a cdsParam(n) that is previously
placed on the symbol?

I cannot understand that at all... :-(

Really appreciate your help!

Regards, Joe

 

Joe,

In the CDF for a component, there are some parameters which control label
display. In IC5141, if you do Tools->CDF->Edit CDF, fill in the component info,
and scroll down to the "Interpreted Labels Information" section (in IC613 this
is a tab on the form).

Within this there are fields such as paramLabelSet, opPointLabelSet,
modelLabelSet. These list the names of parameters which will be displayed (in
order) in these cdsParam(n) interpreted labels - depending on whether you
are displaying entry parameters, op point, or model parameter info.

You can have as many labels as you want on the symbol.

You can also use the Edit->Component Display in the schematic editor to
customize what appears on them

This is covered in the "Specifying Label Information" section in the Component
Description Format User Guide <instdir>/doc/cdfuser/cdfuser.pdf

Regards,

Andrew.