This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
In following scenario:
I understand that this will force it into a “Power Down” mode.
But I have following questions regarding this Power Down mode:
Q1. Is it able to detect Link activity by tuning on or blinking LED0/pin4, or does this require a different low power mode? (entered via a SW command?)
In following scenario.
Q2. Is it able to detect a Magic Packet and asset a GPIO pin, or does this require a different low power mode? (entered via a SW command)?
The datasheet mentions on Page 21: “DP83825I WoL logic circuit is able to generate a user-defined event through any of the GPIO pins”.
But the only mention in the datasheet regarding how/which pins could be used is in the below:
Q3. Does that mean that “any of the GPIO pins” actually means “only pin 2” (50MHzOut/LED2)?
Note that in my application I need two separate LED/GPIO pins for following functions:
Q4. Do I understand correctly that this is possible with this part, but only RMII Slave Mode (not Master Mode, since that requires using pin 2 as 50MHz Clock out)?
FYR The below table on page 73 of the datasheet is confusing.
I believe the lines that I marked up with yellow highlight below should be deleted from it.
Hi Lindsey,
We are taking a look at the isseu and will get back to you by Tuesday next week.
-Regards
Aniruddha
Hi Lindsey,
To address your questions:
1. When the PHY has been powered down, by asserting the PWDN pin low, the PHY will not be able to detect link.
2. When the PHY has been powered down, by asserting the PWDN pin low, the PHY will not be able to detect a magic packet. Please refer to the datasheet section 7.3.5 for WoL configuration.
3. Yes WoL interrupt can only be asserted on LED2 in this device.
4. You are correct, there is a typo in the datasheet. In regards to RMII Master Mode, by default, LED2 will be configured to output a 50MHz clock in RMII Master Mode. However, this should still be configurable.
Please let me know if this solves the issue.
Thank you,
Nikhil