Altera Quartus II Scripting Uživatelský manuál stáhnout pdf (Strana 64)

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2–38 Chapter 2: Command-line Executables

quartus_fit

This option overrides the settings specified in the Quartus II Settings File (.qsf) or the part used in Analysis

& Synthesis (quartus_map). The specified part must be in the same device family used in Analysis &

Synthesis.

--seed=<value>

Option to use the specified seed value.

The Fitter uses the seed as the initial placement configuration when attempting to optimize the design's

timing requirements, including fmax.

--signalprobe

Option to perform an incremental SignalProbe

™

compilation. Use this option when only SignalProbe

settings have changed since the last compilation.

This option cannot be used with most of the other quartus_fit options.

--tco=<time unit>

Option to specify the tco time value.

Tco is the maximum acceptable clock to output delay to the output pin. The clock to output delay is the

time required to obtain a valid output at an output pin that is fed by a register after a clock signal

transition on an input pin that clocks the register. This time always represents an external pin-to-pin delay.

Example usage:

quartus_fit one_wire --tco=10.55ns

The format is "<floating point time value><time unit>". In the example, "10.55" is the <floating point time

value> and "ns" is the <time unit>.

The following table displays possible time units:

--tdc[=on|off]

Option to use timing-driven compilation. This option optimizes place and route based on timing

information.

Time Unit Description

s second(s)

ms millisecond(s)

us microsecond(s)

ns nanosecond(s)

ps picosecond(s)

fs femtosecond(s)

hz hertz

khz kilohertz

mhz megahertz

ghz gigahertz

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 633 634

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