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Contributor
Contributor
7,027 Views
Registered: ‎01-02-2015

Connecting ethernet signals to PL while maintaining ENET connection to MIO

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Using MicroZed 7020 and Vivado 2014.4.1_63036

 

I would like to be able to read ethernet signals from PL without disconnecting the path from ENET 0 through the GMII/RGMII Adapter and out to MIO[16:27,52,3]. I have tried re-customizing the Zynq7 PS from the block diagram by changing the MIO Configuration of ENET 0 to EMIO, but this has the effect of removing the connection to MIO. This requires that I add another PHY that connects to PL, rather than using the PHY that already exists on the MicroZed. Is it possible to sniff the ethernet signals in PL while using the current hardware?

 

Attached: I have highlighted red the connections in the Ethernet Controller block diagram (from UG585) that I would like to use.

ethernet_controller_BD.PNG
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Teacher
Teacher
12,947 Views
Registered: ‎03-31-2012

Re: Connecting ethernet signals to PL while maintaining ENET connection to MIO

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This is not possible. Basically there is no way for PL to read the state of PS MIO pins. You can connect PS control signals to PL through EMIO but you can't access MIO on PS from PL.
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Xilinx Employee
Xilinx Employee
7,019 Views
Registered: ‎02-06-2013

Re: Connecting ethernet signals to PL while maintaining ENET connection to MIO

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Hi

 

No these configuration is not possible,you can use only MIO or EMIO connecting to the MAC and not both at the same time.

Regards,

Satish

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Teacher
Teacher
12,948 Views
Registered: ‎03-31-2012

Re: Connecting ethernet signals to PL while maintaining ENET connection to MIO

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This is not possible. Basically there is no way for PL to read the state of PS MIO pins. You can connect PS control signals to PL through EMIO but you can't access MIO on PS from PL.
- Please mark the Answer as "Accept as solution" if information provided is helpful.
Give Kudos to a post which you think is helpful and reply oriented.

View solution in original post

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