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In case of 2 port Hub CY7C65634 configured in individual power mode.
the PWR# pin should be de-asserted after an overcurrent event. but on which port will this pin respond? OVR#[1] or OVR#[2] ?
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Hi,
When used in Individual mode, the PWR# pin is reserved for Port 1 only. This implies that the PWR# pin will be toggled only if there is an overcurrent condition on Port 1 i.e. if OVR#[1] is toggled. Even if there is an overcurrent conditions on Port 2, the PWR# pin will not be toggled by the hub and the power to that port will not get disabled. Hence, we use fuses with the OVR# pins to control each VBUS as in the DVK schematic.
Best Regards,
Sananya
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Hi,
When used in Individual mode, the PWR# pin is reserved for Port 1 only. This implies that the PWR# pin will be toggled only if there is an overcurrent condition on Port 1 i.e. if OVR#[1] is toggled. Even if there is an overcurrent conditions on Port 2, the PWR# pin will not be toggled by the hub and the power to that port will not get disabled. Hence, we use fuses with the OVR# pins to control each VBUS as in the DVK schematic.
Best Regards,
Sananya