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AM1808: Ownership Flag did not get updated when after the frames sent too fast

Part Number: AM1808

HI. I have a question. For our application, we need emac module to send out the frames within couple microseconds (However, we did not send out that quick continuously. We usually send out 4 frames quickly. Then stop for couple milliseconds.)

I could see the emac module able to send out first 2 frames. However, after the emac module sent out 2 frame. and our application tried to read the emac ownership flag. And the ownership flag never clear. I went to a infinity looping. 

The problem will be resolved if I added 60 microsecond delay after the emac sent out first 2 frames. 

Any idea?

Man Lung