DP83TC812S-Q1: question about INH pin and resistor bootstrap

Hi Andrea,

Andrea Tonello said:

1)INH is open drain but is not clear if this pin can accept a voltage about 12V

The INH pin should not be tied to 12V. If you are not using TC10, you can leave it floating. If you are using TC10, you can route it in the following configuration from the datasheet:

Andrea Tonello said:

2)Pin boot strap (for example RX_DV and RX_ER these pins define PHY address) put RH resistor 4.5kohms tollerance 10%, if possible use 4.7kohms with 1%? because is difficutl to find this resistor value(hereunder a image)

Yes, 4.7kOhm at 1% is acceptable

Best regards,

Melissa

Hi Andrea,

INH can be left floating for all devices DP83TC8xx devices.

For the strap resistor, it will apply to DP83TC812/4. I'm not sure about the other devices, you would have to calculate it from the electrical characteristics section.

Best regards,

Melissa