Processor ports

Processor input and output ports are named and declared. A port may be an input (<in> tag) or an output (out tag). For each input/output, the following attributes can be defined:

• type (mandatory): contains the base type of data i.e., a basic type identifier that describes the type of the data received/generated by the port. When data is scalar this is the actual data type, when data is an array this is the type of the data leaves of the array.
• depth (optional, default is 0): contains the depth of the array if applicable
• cardinality (optional, only for out ports with depth ): contains the number of elements of the generated array. This value can be provided only if it is a constant i.e., the number of elements does not vary for each instance of data. When the data depth is greater than 1, the format for the cardinality attribute is a column-separated list of integers (for example, "2:3" for an array containing 2 arrays of 3 elements).