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156 Views
Registered: ‎07-23-2019

IBERT loopback_in bits meaning?

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In-System IBERT has 3 bits per channel for loopback control but I couldn't find what do each of them actually control. Any pointer?

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Xilinx Employee
Xilinx Employee
121 Views
Registered: ‎10-19-2011

Re: IBERT loopback_in bits meaning?

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Hi @archangel-lightworks ,

you could give the transceiver user guide loopback section a look. Look for the LOOPBACK signal.

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Explorer
Explorer
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Registered: ‎03-16-2019

Re: IBERT loopback_in bits meaning?

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as I understand correctly 3 means PMA loopback and 6 means PCA loopback.

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135 Views
Registered: ‎07-23-2019

Re: IBERT loopback_in bits meaning?

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Okay, so 3 is b011 and 6 is b110, but I'd like to know the meaning of each bit or all the 8 possibilities

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Xilinx Employee
Xilinx Employee
122 Views
Registered: ‎10-19-2011

Re: IBERT loopback_in bits meaning?

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Hi @archangel-lightworks ,

you could give the transceiver user guide loopback section a look. Look for the LOOPBACK signal.

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113 Views
Registered: ‎07-23-2019

Re: IBERT loopback_in bits meaning?

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@eschidl 

Of course... I just expected that in the IBERT user guide and didn't look any further.

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