Combination non-volatile memory and input-output card with direct memory access

摘要

A removable electronic circuit card having both a memory module with a non-volatile mass storage memory and a separate input-output module so that data transfers may be made through the input-output module directly to and from the mass storage memory in a direct memory access (DMA) type transfer when the card is inserted into the host system but without having to pass the data through the host system. Once the host gives a DMA command, the data transfer is accomplished independently of the host system, except for the host supplying power and possibly a clock signal and other like support, during such a data transfer directly with card. The data for the transfer can be communicated between the input-output module and the exterior device through either wireless or an electrical connection means.

主权项

1. A system comprising:
a host controller; a first controller; a second controller; and a bus configured to exchange data and commands between the host controller and the first and second controllers, wherein the first and second controllers are configured to perform a direct memory access type transfer using the bus in response to receiving a command directly from the host controller to perform the direct memory access type transfer; wherein host controller is operative to provide a clock signal to the bus during the direct memory access type transfer.