VSC7173XYI/G24 データシートの表示（PDF） - Maxim Integrated

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VSC7173XYI/G24

Enhanced 2:1 Port Selector and 1:2 Port Multiplier for Serial ATA and Serial Attached SCSI

Maxim Integrated 

VSC7173

Data Sheet

Application Examples

The VSC7173 allows two Serial ATA hosts to access one Serial ATA drive. Figure 1 shows a common application

where redundant I/O controllers in disk arrays have multiplexed access to single-port Serial ATA disk drives.

I/O Controller A

VSC7173

I/O Controller B

Serial ATA Drive

(1 of n)

Backplane

"Tailgate" Board

Figure 1. Serial ATA Backplane Application

Another application example (Figure 2) is for simple port replication to enable an existing Serial ATA Host Bus

Adapter (HBA) to connect to two ports. By using the VSC7173, a single channel from the HBA may be selectively

connected to an internal connector or an external connector. The VSC7173 provides both the mulitplexing

functionality and buffering to drive external connections.

Serial ATA

Host Bus Adaptor

PCI Bus

Port A

Port B

Internal

Connector

VSC7173

Port Multiplier

Figure 2. Port Multiplier Application

External

Connector

External

Connector

3 of 17

Confidential

Revision 4.1

May 23, 2005

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