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RTL Compiler: DFT Checks and non controllable/observable I/O

moogyd

Hi,

I am synthesizing a top level digital block that has interfaces to external pads and to a top level analog block.

When I run DFT checks, it assumes that all ports are controllable, which is not the case for the signals from the top level analog block.

Is the an attribute I can apply to these ports to indicate that they are not controllable?

Thanks,

Steven

 

Parents

  • Hi Again,

    Having checked further, this is not what I want.  This attribute only applies to pins, and is intended for internal black boxes.

    I need something to apply to design ports, and to indicate that a pin is not controllable (even though it is a primary input)

    Any additonal suggestions?

    Thanks, Steven

Reply

  • Hi Again,

    Having checked further, this is not what I want.  This attribute only applies to pins, and is intended for internal black boxes.

    I need something to apply to design ports, and to indicate that a pin is not controllable (even though it is a primary input)

    Any additonal suggestions?

    Thanks, Steven

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