4. (25 pts) Visit the Micron Technology web page. a. What DDR3 products does Micron sell in terms of density? b. For the largest DDR3 SDRAM (that you would want to use in a new design), i. What are the possible depths and the corresponding word sizes? ii. What is a rank? iii. How many banks and how many ranks? iv. How big is each bank? v. For the smallest word size, how are the address bits allocated? Assume that the subarrays are 256 kb and square. vi. How many bits are in a bank? vii. Assume that a subarray is 256 kb. How many subarrays are there? viii. What is the package? Do not use the acronym. ix. What is the fastest cycle time? x. What is Voo