Comment 17 for bug 1231903

Default Association and Sequence are used together by software to group Pin Complexes (and
therefore jacks) together into functional blocks to support multichannel operation. Software may
assume that all jacks with the same association number are intended to be grouped together, for
instance to provide six channel analog output. The Default Association can also be used by
software to prioritize resource allocation in constrained situations. Lower Default Association
values would be higher in priority for resources such as processing nodes or Input and Output
Converters.

Pin Default 0x01451150: [Jack] SPDIF Out at Ext Rear
  Conn = Optical, Color = Black
  DefAssociation = 0x5, Sequence = 0x0, Misc = 0x1

Pin Default 0x01c51160: [Jack] SPDIF In at Ext Rear
  Conn = Optical, Color = Black
  DefAssociation = 0x6, Sequence = 0x0, Misc = 0x1