DP83TC812S-Q1: Can software modify Bootstraps?

Hello,

To answer your questions:

1. PHY Address can only be configured through hardware bootstraps. However, other features, such as operating mode should be configurable through registers.

2. If the PHY is bootstrapped to RMII Master mode, a 50-MHz clock reference is automatically outputted on RX_D3. This clock must be fed to the MAC. The CLKOUT signal is by default output on pin 16, not RX_D3.

Thank you,

Nikhil

All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and it is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).

Hi Yang,

Correct MDI master and slave can only be configured through hardware. This has to do with the link training process. You may read more from this white paper: https://www.ti.com/lit/wp/szzy009/szzy009.pdf?ts=1632499947732&ref_url=https%253A%252F%252Fwww.google.com%252F

Thank you,

Nikhil

All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and it is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml).