Computer program product for controlling a flash/DRAM/embedded DRAM-equipped system

摘要

A computer program product, apparatus and associated method/processing unit are provided for utilizing a memory subsystem including NAND flash physical memory and DRAM physical memory. Further included is a first buffer for receiving DDR signals and converting the DDR signals to SATA signals. The first buffer includes embedded DRAM physical memory. Also provided is a second buffer for receiving the SATA signals and converting the SATA signals to NAND flash signals. The second buffer is communicatively coupled to the first buffer via a first memory bus associated with a SATA protocol, the NAND flash physical memory via a second memory bus associated with a NAND flash protocol, and the DRAM physical memory.

主权项

1. An apparatus, comprising:
a memory system including:
NAND flash physical memory;RAM physical memory;a first buffer for receiving DDR signals, over a DDR bus, and converting the DDR signals to SATA signals; andsecond buffer for receiving the SATA signals and converting the SATA signals to NAND flash signals, the second buffer communicatively coupled to the first buffer via a first memory bus associated with a SATA protocol, the second buffer further communicatively coupled to the NAND flash physical memory via a second memory bus associated with a NAND flash protocol, the second buffer further communicatively coupled to the RAM physical memory;said memory system configured for:
receiving, over the DDR bus, a special command and special data that are responsive to a communication from another system,after the receipt of the special command and the special data, processing at least one of the special command or the special data for causing particular data in the NAND flash physical memory to be written to the RAM physical memory, andafter a status in connection with the memory system, receiving a read command to read the particular data written to the RAM physical memory after the receipt of the special command and the special data.