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Hi, we are designing a new USB hub, and I have a question about the #PWR and #OVR pins. If our downstream devices are self powered, is there any problem with bypassing the #PWR and #OVR pins? I am planning to leave the #PWR pins floating and pulling the #OVR pins high with 10k resistors. Will there be any issues with enumeration if the downstream devices are powered up independently of the hub?
Thank you
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Hello,
There is no issue in enumeration if you don't use the PWR and OVR pins of the hub and have pulled up the OVR pins with a 10K resistor. However it is recommended to connect a power switch to those pins so that the hub can be notified if there is an overcurrent condition on the self powered device.
Best Regards,
Sananya
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Hello,
There is no issue in enumeration if you don't use the PWR and OVR pins of the hub and have pulled up the OVR pins with a 10K resistor. However it is recommended to connect a power switch to those pins so that the hub can be notified if there is an overcurrent condition on the self powered device.
Best Regards,
Sananya