Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Quartus Primeツールにて、”safe state machine”のオプション設定があります。この機能をOFFにしていた場合、どういったデメリットがありますか? 同期回路にて組んでおけば安全であると考えますが、それでもこの設定を有効にしておいた方がいいのでしょうか?

Blues-sptn
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Kenny_Tan
Moderator
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Hi, Can you put your question in english so that we can help to answer that? Thanks
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Blues-sptn
Novice
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With the Quartus Prime tool, there is an option setting of "safe state machine". What disadvantages are there if this function is turned off?

I think that it is safe to organize it with a synchronous circuit, but is it still better to keep this setting effective?

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Kenny_Tan
Moderator
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A safe state machine in Quartus is a state machine that if it reaches an illegal state (for any exceptional reason, such as glitch, metastability, etc.), it will reach the reset state after one clock cycle.

 

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Blues-sptn
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Thank you for your response.

It seems better to use it for risk avoidance.

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