If you cannot find it on AMD’s website (they reorganize links occasionally), try this direct search string in Google: "kr260_schematic_rev1.0.pdf" filetype:pdf
But at some point, the software abstraction breaks. You need to know: Which exact bank is that I/O on? What is the pull-up voltage on I2C bus 4? kria kr260 schematic
The KR260 is a carrier card for the Kria K26 SOM (System-on-Module). The schematic shows the connector (J30) that interfaces to the SOM. You will see signals like SOM_IO_0 or PS_MIO_23 . If you cannot find it on AMD’s website
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