Does the MCB support 4 Gb memories? What about stacked/dual-die memory devices?
The Spartan-6 MCB supports 4 Gb monolithic memories. To interface with a 4 Gb SDRAM part, the Create Custom Part feature must be used. A 4Gb memory can be achieved with the address bits configured as either row:15, col:11, bank:3, or row:14, col:12, bank:3. However, the Spartan-6 MCB does not support dual-die or twin-die memories because the read capture circuit of the MCB does not support the stacked die.