3. An apparatus according to claim 2 , wherein the data transfer portion includes a storage portion having a plurality of independently controlled storage elements; wherein the data transfer portion carries out the dividing in a manner that includes grouping the second data words in a manner so that each group includes a respective positive integer number of the second data words, and storing each group of the second data words in a respective one of the storage elements; and wherein the supplying includes supplying the second data words in succession from the storage portion to the second data interface.
3. An apparatus according to claim 2 , wherein the data transfer portion includes a storage portion having a plurality of independently controlled storage elements; wherein the data transfer portion carries out the dividing in a manner that includes grouping the second data words in a manner so that each group includes a respective positive integer number of the second data words, and storing each group of the second data words in a respective one of the storage elements; and wherein the supplying includes supplying the second data words in succession from the storage portion to the second data interface. 4. An apparatus according to claim 3 , wherein each group includes the same number of the second data words; wherein the data transfer portion maintains a first value that is representative of the number of the second data words in each group, and maintains a second value that is representative of the number of groups; and wherein the data transfer portion carries out the supplying in a manner that includes, as a function of the first and second values, successively enabling in a mutually exclusive manner each of the storage elements having a group of the second data words therein, each of these storage elements, when enabled, transferring the second data words therein to the second interface.