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AURIX™ Forum Discussions

Jamber
Level 3
Level 3
25 replies posted 50 sign-ins First like received

How to decide the threshold value for a voltage monitored by Secondary Monitor of PMS? 

For example, VDDP3 is 3.3V normally, the default threshold after reset is 0xFE(3.795V) for OV, 0xA7(2.49V) for UV, the idle value is 0xDD(3.3V). The register description in usermanual is shown below:

VDDP3_Secondary_Monitor.png

But in another part of this chapter, the description is different: it said the reset value of EVR33OVVAL and EVR33UVVAL is 3.63V and 2.97V respectively.

VDDP3_Secondary_Monitor2.png

So is there some misunderstand about the calculation? and how to decide the threshold value in actual board?

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1 Solution
Yuva
Moderator
Moderator
Moderator
100 solutions authored 25 likes received 100 sign-ins

Hello,

Your calculations are correct. The value mentioned in the image are not intended as “default values after a reset”, please consider them just as examples of the DS condition, i.e. 2.97V is the Min. tested value by setting CBh as the threshold value.

sec_monitor.PNG

 

 

 

 

 

Thanks.

View solution in original post

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Yuva
Moderator
Moderator
Moderator
100 solutions authored 25 likes received 100 sign-ins

Hello,

Your calculations are correct. The value mentioned in the image are not intended as “default values after a reset”, please consider them just as examples of the DS condition, i.e. 2.97V is the Min. tested value by setting CBh as the threshold value.

sec_monitor.PNG

 

 

 

 

 

Thanks.

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