Each bit indicates the availability for one channel.

  • D0 : 0: Digital I/O 0/32 can not be used for input. 1: Digital I/O 0/32 can be used for input
  • ...
  • D31 : 0: Digital I/O 31/63 can not be used for input. 1: Digital I/O 31/63 can be used for input