Diamond: What is the difference of HOLD and HOLD_WINDOW?

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• Lattice Diamond: Are the hold window analysis violations observed on the Timing Analysis View valid timing violations? Do users need to make sure that these are passing even though they are not blocking bitstream generation?

  Even though PAR timing did not show any timing violations, users/designers must check the Timing Analysis View for hold window violations. Hold Window analysis is only for boundary paths, i.e. paths involving input or output ports specified with an ...

• 941 - Diamond: Timing: Why does the hold analysis use a different speed grade?

  Diamond: Timing: When running a Hold analysis the default speed grade run is the -M. The -M speed grade is the fastest device across a process and is usually the worst case for a hold analysis. Ideally when looking at a hold analysis the IO Timing ...

• 929 - Diamond: Place and Route: Timing: What is Auto hold-time correction setting in PAR?

  Diamond: Place and Route: Timing: When the PAR (Place And Route) property auto hold-time correction is set to On, the router automatically inserts extra wires to compensate for the hold time violation on affected registers. Internal hold time ...

• ECP5 / Diamond 3.14: Why does my design get a Map device oversize error related to PLL for LFE5U-12F in with Diamond 3.14, but completes map successfully in earlier releases of Diamond software?

  In Diamond version 3.14, there is a bug where it incorrectly limits the number of PLLs in the device to 0 for LFE5U-12F. Example error message: ERROR - (device oversize error). The number of PLL components needed (1) exceeds the number available. ...

• 1993 - Diamond: Why does the place and route tool not fix hold violation for the design despite Auto Hold-Time Correction being set to "On"?<br>

  The tool disables Hold-Time Correction due to the following reasons: 1. If there is a setup timing error, auto hold-time correction will not be done. If user wants the correction to be done anyway, add the following option to “Command Line Options” ...