An SDRAM simultaneously reads the desired row and stores all of the information in the I/O
logic. Next the desired column is read from the I/O logic and the data appears on the output.
During burst transfers, the subsequent data words are read from the I/O logic and placed on
the output. This occurs for the predetermined number of words known as the burst length.
For burst transfers, this is faster since the row has already been pre-read.