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DP83TC811S-Q1: sleep mode question

Amelie Zheng
Genius 10865 points
Part Number: DP83TC811S-Q1
Other Parts Discussed in Thread: DP83TC811

Hi Team,

May I ask the following questions?

1: Regarding entering deep sleep, is it only necessary to supply 3.3v to VDDA and pin11? And PIN22 VDDIO can not supply 1.8v. Because we need deep sleep uA-level power consumption.
At the same time, there is an Ethernet remote wake-up function requirement. Basically, the power is off, only sbc has a 3.5V output. Need to confirm whether 1.8v can not be supplied during deep sleep.
2: If DP83TC811S-Q1 does not support deep sleep, only 3.3v power supply, please recommend a deep sleep chip with remote wake-up function. Need to realize the vehicle Ethernet function, the interface is RMII or RGMII.
3: DP83TC811S-Q1 is remotely awakened in deep sleep, which one of the INH signal and INT signal has changed, and from what level and why?
4: What is the power domain of the INH signal?

  • 0
    TI__Expert 7040 points

    Hi Amelie,

    1. The DP83TC811 does not support disabling the VDDA or VDDIO supplies in Sleep mode. 
    2. I've reached out via email to provide information regarding remote wake-up in automotive Ethernet. 
    3. In the DP83TC811 Sleep mode, the INH signal is de-asserted low when the device exits Sleep mode. 
    4. The INH pin is powered through the VDDIO domain. 

    Regards,
    Justin