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7,104 Views
Registered: ‎01-14-2015

Extra buffer for GTX (SGMII mode) for board to board communication?

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Hello,

 

I planning (point-to-point) interconnect Zynq GTX transceivers loacted on different boards. The boards are connected via a backplane. Maximum distance is 30cm (inside a half 19'' rack). The GTX tranceivers are used for SGMII (1.25GHz).

 

Is it advisable to use extra low-latence buffers (for EMC, driving capability? If yes is there a recommendation for a particular circuit?

 

Regards, Chris

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Moderator
Moderator
12,560 Views
Registered: ‎02-16-2010

Re: Extra buffer for GTX (SGMII mode) for board to board communication?

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If there is a problem seen in simulation, check by trying different values for GT transmitter and equalizer types in receiver.
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3 Replies
Moderator
Moderator
6,645 Views
Registered: ‎02-16-2010

Re: Extra buffer for GTX (SGMII mode) for board to board communication?

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the attenuation may not be only because of the track. It includes the connectors as well. Please check the amount of attenuation overall with this channel.

Also, a simulation with ibis-ami models of GT will be helpful. You can get the models at the link below.
http://www.xilinx.com/member/ibis_ami/
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6,469 Views
Registered: ‎01-14-2015

Re: Extra buffer for GTX (SGMII mode) for board to board communication?

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Thanks, Venkata, that might help.

In case the simulation reveals a problem, what buffer ICs would you recommend?

 

Regards, Chris

0 Kudos
Moderator
Moderator
12,561 Views
Registered: ‎02-16-2010

Re: Extra buffer for GTX (SGMII mode) for board to board communication?

Jump to solution
If there is a problem seen in simulation, check by trying different values for GT transmitter and equalizer types in receiver.
------------------------------------------------------------------------------
Don't forget to reply, give kudo and accept as solution
------------------------------------------------------------------------------