Hard disk controller

Abstract

The invention discloses a hard disk controller which consists of an ATA protocol layer finite-state machine (FSM) module provided with an FSM fulfilling the state transition of an ATA protocol layer, and the FSM is utilized to control the data reading and writing operation of a physical layer module and a register group, the register group comprises a global register set by the ATA protocol and is applied to registering data according to a control signal of the ATA protocol layer FSM module, and the physical layer module is connected with the hard disk and applied to reading and writing hard disk data according to the control signal of the ATA protocol layer FSM module and the registered data of the register group. The hard disk controller of the invention can finish the reading and writing operation of data stream towards the hard disk at a high speed without participation of a computer system.

Description

technical field [0001] The invention relates to an electronic data storage control technology, in particular to a hard disk controller for controlling data reading and writing to a hard disk. Background technique [0002] The hard disk is the main storage device on the periphery of the computer system. At present, the read and write control of the hard disk data must rely on the standard peripheral interface of the computer system and the computer operating system. The computer communicates with the hard disk through a standard peripheral circuit interface connected to its bus. The designer writes a software driver that the computer can execute to configure the hard disk, and then the computer organizes the storage and reading of data on the hard disk by running the driver. [0003] As mentioned above, at present, the computer system must be involved in the control of hard disk data, not only the driver program corresponding to the hard disk control protocol needs to be inst...

AI Technical Summary

Problems solved by technology

[0006] However, there is no relatively simple but high-speed hard disk controller specially used for embedded systems at present. As mentioned above, the computer system must be involved in the read and write operations of the hard disk at present. Not only the design is complicated, but the cost is high. And the reading and writing efficiency is very low

Images