关键词: SATA接口, 扩展电路, 传输速率

Abstract: The rapid development of information technology has put forward higher requirements for storage capacity, transmission rate and stability of storage devices. In order to meet the demand for high-speed transmission between multiple devices, the high-speed serial advanced technology attachment (SATA) interface, as the mainstream storage device interface, needs to be expanded. A SATA interface expansion circuit is designed, and the peripheral circuit and test platform are built based on a domestic bridge chip. The hardware design and test method are introduced in detail, and the results show that all five downstream SATA interfaces can be connected successfully, the transmission rate can reach 6 Gbit/s, andthe rest of the peripherals can also read and write normally.

Key words: SATA interface, expansion circuit, transmission speed