17. The circuit of claim 16 , wherein the packer is configured to pack the valid data characters of the characters determined to be inside the frame after being decoded, and to align the valid data characters packed with one of a left or right alignment; and the generator is configured to provide the SOF character as a second sideband signal associated with the valid data group for the sideband encapsulation.
17. The circuit of claim 16 , wherein the packer is configured to pack the valid data characters of the characters determined to be inside the frame after being decoded, and to align the valid data characters packed with one of a left or right alignment; and the generator is configured to provide the SOF character as a second sideband signal associated with the valid data group for the sideband encapsulation. 19. The circuit of claim 17 , further comprising: storage registers accessible to store characters for subsequent retrieval; and a storage controller to transfer the valid data characters aligned to the storage registers if the detectors determine absence of the EOF character.