Altera CRC Compiler Manuel d'utilisateur télécharger pdf (Page 10)

1–6 Chapter 1: About This Compiler

Installation and Licensing

CRC Compiler User Guide © November 2009 Altera Corporation

Preliminary

All megafunctions in a device time out simultaneously when the most restrictive

evaluation time is reached. If there is more than one megafunction in a design, a

specific megafunction’s time-out behavior may be masked by the time-out behavior of

the other megafunctions.

1 For MegaCore functions, the untethered timeout is 1 hour; the tethered timeout value

is indefinite.

Your design stops working after the evaluation time expires; the checksum output

signal in a generator and the crcbad output signal in a checker are forced low.

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Altera CRC Compiler Manuel d'utilisateur Page 10