Memory system having memories of different capacities
AssigneeRealtek Semiconductor Corp.
InventorYa-Min Chang
Life of this patent
Estimating the term…
Abstract
A memory system includes a memory controller, a first memory, and a second memory. The memory controller has a command address port, a chip select port, a first data port, and a second data port. The first memory is coupled to the command address port, the chip select port, and the first data port, and the second memory is coupled to the command address port, the chip select port, and the second data port. The capacity of the second memory is greater than the capacity of the first memory. The memory controller controls the first memory and the second memory simultaneously through the command address port and the chip select port.
Claims18
A memory system comprising:
- a memory controller having a command address port, a chip select port, a first data port, and a second data port;
- a first memory coupled to the command address port, the chip select port, and the first data port;
- and
- a second memory coupled to the command address port, the chip select port, and the second data port;
- wherein:
- a capacity of the second memory is greater than a capacity of the first memory;
- the memory controller controls the first memory and the second memory simultaneously through the command address port and the chip select port;
- the second memory comprises a first physical memory segment and a second physical memory segment;
- the first physical memory segment of the second memory and the first memory are corresponding to a first virtual memory segment;
- and
- the second physical memory segment of the second memory is corresponding to a second virtual memory segment.
A method for operating a memory system, the memory system comprising a first memory and a second memory, a capacity of the second memory being greater than a capacity of the first memory, the second memory comprising a first physical memory segment and a second physical memory segment, the first physical memory segment of the second memory and the first memory being corresponding to a first virtual memory segment, the second physical memory segment of the second memory being corresponding to a second virtual memory segment, and the method comprising:
- performing a reading operation to the first memory and the second memory according to a corresponding address;
- the first memory outputting first reading data;
- the second memory outputting second reading data;
- and
- outputting output data according to whether the corresponding address is corresponding to the first virtual memory segment or the second virtual memory segment.
Dependencies are inferred from the claim text.