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chsdkj
Explorer
Explorer
5,547 Views
Registered: ‎07-10-2013

V7 GTH Unused RX XCVRs

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In a design here using a V7 FPGA and GTH xcvrs, a test version of the fabric logic will be used which would likely have a number of the RX xcvrs not instantiated.

 

The physical FPAG on the PCB will have the RX xcvr pins connected to external circuitry, with the possibility of signals being present on the xcvr inputs.

 

UG476 (v1.10) Tabel 5-5 indicates that unused RX input pins should be connected to ground.  Is this a requirement?

 

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yenigal
Xilinx Employee
Xilinx Employee
9,618 Views
Registered: ‎02-06-2013

Hi

 

The guidelines are for unused Transceiver connection on PCB.

 

As you say that they are used  and connected to external circuit and just you want to test few transceivers with logic.

 

You can do this with out any issue's.

Regards,

Satish

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yenigal
Xilinx Employee
Xilinx Employee
9,619 Views
Registered: ‎02-06-2013

Hi

 

The guidelines are for unused Transceiver connection on PCB.

 

As you say that they are used  and connected to external circuit and just you want to test few transceivers with logic.

 

You can do this with out any issue's.

Regards,

Satish

--------------------------------------------------​--------------------------------------------
Kindly note- Please mark the Answer as "Accept as solution" if information provided is helpful.

Give Kudos to a post which you think is helpful.
--------------------------------------------------​-------------------------------------------

View solution in original post

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