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SATA power

Gunter H
Prodigy 200 points

Hello, I'm not using SATA on our OMAP application.

The PCB is designed for R1 silicon, meaning SATA_VDD is connected to 1.2V. For R2 and later, I can unconnect this. However the datasheet only states that I'll save: "additional power savings". How much power savings can I expect?

Likewise, I have connected SATA_VDDR to power. How much power savings can I expect if I remove this connection?

Thanks - I don't have good information on SATA power usage from the power estimation spreadsheet.

Gunter

 

 

 

  • 0
    TI__Guru* 83935 points

    Hi Gunter

    I believe the power savings on keeping these pins connected vs no connect would be in the order of 2-3 mW total.

    If you choose to keep these pins connected for continuity in design, just make sure that the peripheral is clock gated via PSC and the SATA PHY/PLL is powered down completely, which I think is the case by default.

    Hope this helps.

    Regards

    Mukul