| 摘要 |
An external device expansion card and a data processing method for an input/output external device. The external device expansion card comprises: an interface unit (01) for being inserted on a memory card slot of a host, a memory unit (02), a memory unit controller (03), an input/output (I/O) external device (04) and an I/O external device controller (05). The external device expansion card may be directly inserted into the memory card slot of the host via the interface unit (01), and the memory unit (02) and the I/O external device (04) are integrated on the external device expansion card, such that the I/O external device controller (05) and the host may access the memory unit (02) directly by means of a physical address of the memory unit (02), namely, the I/O external device controller (05) and the host may read data in the memory unit (02) directly according to the physical address of the memory unit (02), thereby greatly reducing overhead for reading data from a memory by the host and the I/O external device (04). |
