Appreciate the clarification, I should have also mentioned that in AN218241 (PSoC 6 MCU Hardware Design Considerations) on pg 19 (section 9.2) it states:
"PSoC 6 MCU also has an internal precision reference of 1.024 V (±1 percent)."
Which was another source of my confusion, I assume this is a hangover from other versions of this doc and so would need updating?
Thanks Anthony - really sorry for the confusion. I think that was a miss (from me being an author of the AN ) and will definitely get fixed in the next version
Meenakshi Sundaram R