To configure a 4x4 switch where MI0 is sourced from SI1, MI1 is unused, MI2 is sourced from SI3 and MI3 is sourced from SI0, use the following code example:
# Setup registers
Write address offset 0x40, Data 0x1
Write address offset 0x44, Data 0x8000_0000
Write address offset 0x48, Data 0x3
Write address offset 0x4C, Data 0x0
# Commit registers
Write address offset 0x0, data 0x2