topic VDD_HIGH_IN question in Rev. 7, 10/2016 datasheet in i.MX Processors

VDD_HIGH_IN question in Rev. 7, 10/2016 datasheet

MaxChou — Sun, 04 Dec 2016 03:46:59 GMT

Dear Sir

my customer has a old design, they using PF0100 Vgen6(3.3V) for VDD_HIGH_IN,

but latest datasheet, add VDD_HIGH_IN max value is 2.85V in LDO bypass mode,

Table 8. Operating Ranges

this info let them so confuse,

but they can't modify H/W in current status,

could they keep original design ?

or they could to modify vgen6 output in u-boot/kernel ?

Max

Re: VDD_HIGH_IN question in Rev. 7, 10/2016 datasheet

RossMcLuckie — Mon, 05 Dec 2016 13:08:20 GMT

Hi Max,

I'm checking this for you and will try to confirm shortly, but I believe this is an error in our doc update. The regulators associated with VDD_HIGH_IN do not support bypass mode, so there is no need for the LDO bypass definition and you should be able to ignore this.

I will confirm this ASAP and if I am correct we will look to correct this in the next doc update.

Regards

Ross

Re: VDD_HIGH_IN question in Rev. 7, 10/2016 datasheet

RossMcLuckie — Mon, 05 Dec 2016 15:04:05 GMT

Hi,

Just to confirm this is indeed a documentation error that you can ignore until we update the document and remove the incorrect "VDD_HIGH_IN supply voltage (LDO bypass entries)".

Regards

Ross

Re: VDD_HIGH_IN question in Rev. 7, 10/2016 datasheet

art — Wed, 21 Dec 2016 10:33:03 GMT

This is the typo in the documentation since the VDD_HIGH regulator just doesn't have the bypass mode. Just ignore it.

Have a great day,
Artur

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