Layerscape中的主题 Re: GPIO operating voltage in LS1046

GPIO operating voltage in LS1046

Urmila_123 — Wed, 20 Oct 2021 04:51:12 GMT

Hi all,

It is clear from LS1046A data sheet that we will be able to operate GPIO pins either at EVDD or TVDD or OVDD or LVDD. So, How can we fix one specific Voltage? is there any register or RCW field? or Can we apply directly? Please Clarify.

Thanks & Regards

Urmila P.

Re: GPIO operating voltage in LS1046

ufedor — Wed, 20 Oct 2021 05:43:56 GMT

In the QorIQ LS1046A, LS1026A Data Sheet, Table 1. Pinout list by bus it is specified which exactly supply voltage is used by specific GPIO.

You wrote:

> How can we fix one specific Voltage?

Common voltage supported by all of OVDD, EVDD, DVDD, TVDD and LVDD is 1.8V, so it is possible to apply 1.8V to supply powering specific GPIO.