|<--------- 16-bit config register ---------->|
    |                             |               |
    |---------------------------------------------|
    |                             |               |
    |                             |               |
    |<------Byte 1: Control------>|<-Byte0: Data->|
    |                             |               |
    |-----------------------------|---------------|
    | 15 | 14 13 | 12 11 | 10 9 8 | 7 6 5 4 3 2 1 |
      __   _____   _____   ______   _____________
      ^      ^       ^        ^          ^
      |      |       |        |          |
    START    |       |      UNUSED      DATA
          CHANNEL    |
                  PIN SELECT