Abstract: An integrated circuit (IC) exposes hardware blocks thereof via an addressable control space defining fields at corresponding global addresses. The addressable control space is shared across the hardware blocks. Each hardware block has implemented fields; the implemented fields of a hardware block are mapped to a subset of the fields of the addressable control space. One or more implemented fields of more than one hardware block are each mapped to the same field of the addressable control space. A hardware block internally compresses the fields of the addressable control space in accordance with its implemented fields to perform a write operation. A hardware block internally expands the implemented fields to the fields of the addressable control space to perform a read operation.