FIG Type 5 - mattpascoe135/dab GitHub Wiki
#Type 5 The FIG type 5 is used for the Fast Information Data Channel (FIDC). The structure of the FIG type 5 data field is shown in figure 7.

The following definitions apply:
###D1, D2: these 1-bit flags are defined for each extension individually (see clause 8.2).
###TCId (Type Component Identifier): this 3-bit field shall identify one of eight different service components which may be carried using the same extension number.
###Extension: this 3-bit field, expressed as an unsigned binary number, shall identify one of 8 interpretations of the FIG type 5 field (see clause 8.2). Those extensions, which are not defined, are reserved for future use.
##Header Structure ###Current/Next (C/N)
##Field Structure