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Connect bus to GND via resistors for simulation

ealaiporpi

I am new to Cadence. I have to simulate a design which has two outputs "COUNT" and "SAFF" each with 7 and 21 bits respectively. I want to connect a 1 kΩ load resistor to each and then to ground. I have implemented this:

However, the results of the simulation don't reflect this connection so I am wondering if this syntax is correct.

So my question is: Is this the correct way to connect load resistors to these COUNT and SAFF buses?

  • I've no idea what the name = ... annotations are on the resistors, but the resistor naming looks correct for what you've described. To be honest, you can always check what has happened in the spectre netlist - it ought to be pretty clear how it is connected up.

    If the results are not what you're expecting, I don't think it's because of there not being a 1K resistor to ground from each bit of SAFF<0:20> and COUNT<0:6> - that's what you've got here. Perhaps the design simply doesn't work as you expect!

    Andrew.

  • in reply to Andrew Beckett

    Thanks for your reply. The annotations "name = ..." belong to the gnd elements. I also added this "vectorized" notation for them just to try something else.

  • in reply to ealaiporpi

    There's no need to use iterated instances for the gnd components. All the gnd component does is name the net they are connected to so that it's gnd!. All the resistors would have one terminal connected to gnd! regardless of whether it's an iterated instance or not.

    Andrew.

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