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？

[Kenny_Tan]

Hi, Can you put your question in english so that we can help to answer that? Thanks

[Blues-sptn]

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?

[Kenny_Tan]

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.

[Blues-sptn]

Thank you for your response.

It seems better to use it for risk avoidance.