an intra - lsi clock distribution circuit which includes a main distribution circuit , a plurality of intra - block clock distribution circuitries , feedback wires provided in association with each of blocks and each connected to one of plural block - based clock signal wires within the associated block and the intra - block distribution circuitry of the associated block for feeding back the intra - block clock signal distributed to a given one of circuit elements connected to the intra - block clock signal wires to the intra - block clock distribution circuitry of that block . the intra - block clock distribution circuitry in each of the blocks responds to the block - destined clock signal supplied to the associated block via one of the block - based clock signal wires connected thereto and the intra - block clock signals fed back via the feedback wires in the associated block to thereby generate a plurality of intra - block clock signals having respective phases which depend on differences in phase between the block - destined clock signal and the fed - back intra - block clock signals .