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DP83848I: LED_SPEED and LED_LINK issue

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Part Number: DP83848I

Hi Experts:

I found an issue when debugging the DP83848 .

 

There is different output waveform between them ,the output of LED_LINK and LED_SPEED will cause a fault in the firmware.

 

The below start up waveform of DP83848, the application is 100M.

 

 

The below start up waveform of KSZ8081MNXCA, the application is 100M.

 

As the description of d/s, the LED_LINK should be ON for good link and SPEED is ON for 100M, why the speed pin will be pulled low before the LED_LINK pulled low.

How can i make the same output waveform as the KSZ8081?


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