Serial advanced technology attachment (sata) switch

摘要

A switch is coupled between a plurality of host units and a peripheral device for communicating there between. The switch comprises a first serial advanced technology attachment (ATA) port coupled to a first host unit; a second serial ATA port coupled to a second host unit; a third serial ATA port coupled to a device; and an arbitration and control circuit for selecting one of the first host or second host units to be coupled to the device, through the switch, whenever either one of the first or second host units sends commands for execution thereof by the device. A delay in signal path is avoided between active host and peripheral device in order to meet SATA protocol timing requirements.