LPC546xx datasheet for definitions of usb1_vbus threshold levels

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LPC546xx datasheet for definitions of usb1_vbus threshold levels

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jimmyli
Contributor III

Hi, 

      In LPC546xx datasheet (the latest version), I find some parameters about usb1_vbus threshold levels which are not clearly definited.

     Hope you can provide more information about the definitions of shreshold levels.

     Thanks.usb1_vbus threshold levels.png

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nxf77486
NXP Employee
NXP Employee

Hello @jimmyli ,

 

The definition such as Votg_sess_valid, Vadp_probe, Vadp_sense are from OTG and Embedded Host Spec.:

https://www.usb.org/documents?search=embedded+host&category%5B%5D=49&items_per_page=50

 

VOTG_SESS_VLD  -> OTG device Session Valid

Vadp_probe -> ADP probing voltage

Vadp_sense -> ADP sensing voltage

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jimmyli
Contributor III

Hi,

     Got it.

     Thanks very much.

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nxf77486
NXP Employee
NXP Employee

Hello @jimmyli ,

What type of information is not clearly defined for the threshold of usb1_vbus levels? The information in the User Manual and Data Sheet is the information that we have related to this product.

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jimmyli
Contributor III

Hi nxf77486,

      I can't find the full definitions about Votg_sess_valid, VBUS_valid, Vadp_probe, Vadp_sense.

      I need to understand the above parameters which stand for what.

 

      Thanks.

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