FS6523芯片

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FS6523芯片

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jiadian666
Contributor I

您好

在FS6500/ FS4500datasheet中,12.2.1节LBIST中," If an issue is reported, the SAFE output pins FS0B and FS1B stays low and a flag is reported,the RSTB pin is released to allow diagnostic by the MCU",原文中release该如何理解,是置高还是置低?

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guoweisun
NXP TechSupport
NXP TechSupport

RSTB release 就是变成高电平从而使得MCU能正常启动工作。

 

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guoweisun
NXP TechSupport
NXP TechSupport

RSTB release 就是变成高电平从而使得MCU能正常启动工作。

 

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jiadian666
Contributor I

嗯嗯,还想请教一下您就是下文中还有一句话,"LBIST fail does not gate the RSTB pin release, but prevents the FS0B and FS1B pins release. It allows the MCU diagnostic keeping the application in a safe sate.",当LBIST故障时不会释放(即置高)RSTB,那为什么还会使MCU开启诊断,我是一个新手,让您见笑了,还望多多指点!

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guoweisun
NXP TechSupport
NXP TechSupport

意思就是LBIST失败了RSTB一样会release但是FS0B/FS1B就不能释放了,这样MCU方面也可以正常启动

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jiadian666
Contributor I

好的,明白了,谢谢您!

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