Forum Discussion
MartinMaa
Occasional Contributor
Occasional ContributorVREFB<#>N0 pin A and vccio on MAX10
HI, VREFB<#>N0 pin and VCCIO differ in what aspects? What is the purpose of using VREFB<#>N0? I have read the documentation, but I still do not understand the explanation about VREFB in the docum...
Hi, I would like to ask if this means NC. Besides enabling VREF NC, do I need to make any additional settings, such as FPGE firmware?
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AqidAyman_Altera
Regular Contributor
Regular ContributorHi,
As mentioned by @FvM, Vref pin is different from VCCIO pin where VCCIO pin is applicable for all I/O banks because it is for the bank power supply. However, for Vref pin, it is a reference voltage for certain I/O standards which include SSTL, HSUL and HSTL I/O standards in Intel Max 10.
Voltage referenced I/O standards: https://www.intel.com/content/www/us/en/docs/programmable/683794/current/single-ended-sstl-hstl-and-hsul-i-o-24395.html
