Monday, 24 August 2020

CLP Report ISOLATION CHECKS

  • An isolation cell is required for a crossing, but it is neither present in the design nor specified in the UPF file.
  • An isolation cell is not required for a crossing, but it is either present in the design or specified in the UPF file.
  • An isolation cell is present in the design, but the corresponding strategy is not defined in the UPF file.
  • An isolation strategy is specified in the UPF file, but an isolation cell is not present in the design.
  • Two different clamp values are specified for an isolation cell in the UPF file.
  • The isolation clamp value is different from the reset value of the flop.
  • The clamp value of the isolation cell in the design does not match the corresponding strategy specified in the UPF file.
  • The location of the isolation cell in the design does not match the location specified in the UPF file.
  • The isolation control signal is not generated from an always-on region, or is unconnected, floating, or driven by constants.
  • The isolation enable signal specified in the UPF file reaches the data pin of the isolation cell or does not reach the enable pin of the isolation cell.
  • For an internally isolated IP pin, an isolation cell is present in the design or is specified in the UPF file.
  • The isolation control signal is disabled when the source domain is powered-down and the sink domain is powered-up or when the source domain is in a CORRUPT state and the sink domain is not in a CORRPUT state.
  • The isolation control signal is active when there is no requirement for isolation.
  • The value at the output of an isolation cell is different from that at its input during normal working conditions.
  • The value of the isolated port changes during the active isolation period.

1 comment:

  1. Hi Mantra,
    I have a question about this: how to ensure the value at ouput port which is isolated correct with clamp value of its isolation cell?

    ReplyDelete