Interface

5.1 Physical Interface

5.1.1 Interface signals

Figure 5.1 shows the interface signals.

TX data

 

TX+

TX+

 

TX data

 

 

 

 

 

 

 

TX

 

 

 

 

TX

 

 

 

RX data

 

RX+

RX+

Device

RX data

 

Host

 

 

 

analog

 

 

analog

 

 

 

 

 

 

front

 

 

front

 

 

 

 

end

 

ComWake

end

RX

RX

 

ComWake

 

 

 

ComInit

 

 

+5VDC

 

ComReset

 

 

 

 

 

 

 

 

GND

 

 

Figure 5.1 Interface signals

An explanation of each signal is provided below.

TX + / TX -

These signals are the outbound high speed differential signals that are connected to the serial ATA cable.

RX + / RX -

These signals are the inbound high speed differential signals that are connected to the serial ATA cable.

TxData

Serially encoded 10b data attached to the high speed serial differential line driver

5-2

C141-E262

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