A group of 32 8-bit bytes, being the output of a CIRC encoder.
The F1 -Frames shall be fed into a Cross Interleaved Reed-Solomon encoder. The F1 -Frames of 24 bytes each are transformed into F2 -Frames of 32 bytes each. The bit pattern of each of the 24 8-bit bytes of an F1 -Frame remains unchanged but the bytes themselves are displaced and re-distributed over 106 F2 -Frames. Eight additional 8-bit bytes with parity information are added so that each F2 -Frame comprises 32 bytes.