For the IAW 6LP.B the pin/CS is stored in the EEPROM section of the dump — exact offset depends on the read method and hardware variant, but it's a well-documented unit. Post the dump file here and also let us know:
Vehicle make, model and year
How the dump was read (OBD, BDM, direct EEPROM pull, etc.)
ECU hardware and software ID if visible on the label (e.g. HW xx.xx / SW xx.xx)
With the file and those details we can point you straight to the correct offset or extract it for you.