How to calculate the origin of ArcGIS tiling scheme

Question

I use ArcGIS for slicing, cutting the dataset into tiles. But I don't understand how the default tiling scheme origin is calculated based on the coordinate reference system. If there is no coordinate reference system, it may be the upper left corner of the dataset. I tried to look at the ArcGIS documentation, but its description did not explain how to give the default tiling origin based on the reference system. Can someone tell me how ArcGIS gets the tiling scheme origin based on the spatial reference system? Thank you very much. arcgis tile schema