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Altera_Forum
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17 years ago

keepers?

A simple one I think:

Could somebody tell me the definition of 'keepers' that I'm using in my sta reporting, as in 'get_keepers'. How does it differ from 'registers' or 'ports'.

Can't seem to find a definition in the documentation.

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  • Altera_Forum's avatar
    Altera_Forum
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    --- Quote Start ---

    A simple one I think:

    Could somebody tell me the definition of 'keepers' that I'm using in my sta reporting, as in 'get_keepers'. How does it differ from 'registers' or 'ports'.

    Can't seem to find a definition in the documentation.

    --- Quote End ---

    Hi Witty,

    Terminology Definition:

    nodes: Most basic timing netlist unit. Use to represent ports, pins, and registers.

    keepers: Ports or registers. (1)

    cells: Look-up table (LUT), registers, digital signal processing (DSP) blocks,

    TriMatrix memory, IOE, and so on. (2)

    pins: Inputs or outputs of cells.

    nets: Connections between pins.

    ports: Top-level module inputs or outputs; for example, device pins.

    For more info's look into:

    http://www.altera.com/literature/hb/qts/qts_qii5v3_02.pdf

    in the timequest chapter.

    Kind regards

    GPK
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Thanks.

    It would help when searching if I spelt it 'keepers' and not 'kepers' :)