Serial ATA controller having failover function

摘要

A select circuit including a first device bridge to communicate a first stream of information between a first Serial ATA bus and a storage device bus. A second device bridge to communicate a second stream of information between a second Serial ATA bus and the storage device bus. A controller, in response to a select signal, to enable one of the first bridge device and the second bridge device to control a flow of the first stream of information and the second stream of information between the storage device bus and the first and second Serial ATA buses.