The assembly of data blocks to form at least one data packet includes: writing in a first register of at least one first data block descriptor, which includes information representing a status of each block belonging to a set of blocks, whereby the status of each block indicates whether the block has been stored; the determination and recording in a second register of a status of the blocks, which represents the state of storage of the blocks, whereby this operation, based on the use of a second register, enables simple and fast acquisition of the status of a packet which can be assembled on the basis of the blocks; and the assembly of a packet containing the blocks according to the status recorded in the second register.