LogiCORE IP Interleaver/De-Interleaver v7.1 Product Guide (AXI) - 7.1 English - The interleaver/de-interleaver core is appropriate for many communications standards, such as DVB and CDMA2000, and any application that requires data to be rearranged in an interleaved fashion. The multiple configuration mode is particularly useful for standards that require swapping between a number of convolutional interleavers, for example, ITU J.83 Annex B.