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Newbie
Newbie
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Registered: ‎09-27-2019

Changing Zynq Ultrascale+ GEM MAC Speed/Duplex After Starting MAC

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If the MAC is already started with a default speed/duplex (1000Mbps/Full), is it necessary to stop the MAC before changing the speed/duplex bits in the GEM network_config register to match the PHY?  The PHY was initialized after starting the MAC.  What happens if the MAC is not stopped and re-started but the speed duplex bits are just changed?  Does the MAC keep running at the previous speed/duplex or switch to the new speed/duplex?

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Moderator
Moderator
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Registered: ‎08-25-2009

Hi @cstreece ,

The changes won't take into effect if you do not re-start/config the core.

 

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Moderator
Moderator
546 Views
Registered: ‎08-25-2009

Hi @cstreece ,

The changes won't take into effect if you do not re-start/config the core.

 

"Don't forget to reply, kudo and accept as solution."

View solution in original post

Newbie
Newbie
541 Views
Registered: ‎09-27-2019
Ok. Thanks
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