An address generator for providing an address to one of a linear block encoder and a soft linear block code decoder comprises a counter to count c, a position of a bit within a codeword of user data and to count r the codeword, where r=floor(c/74), An inner deinterleaver deinterleaves count c counted by the counter and to output c′. A shift circuit shifts the deinterleaved count c′ by the inner deinterleaver in accordance with count r counted by the counter and to output c″.