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mcetinsoy
Contributor
Contributor
636 Views
Registered: ‎06-18-2015

FPGA Output Pin to Multiple Sinks

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Hello,

 

When connecting FPGA pin to multiple sinks and configuring the pin as output what considerations should be made?

 

In my case, I want to connect the FPGA pin to two SP4T RF switches (PE42441) control lines.

I want to avoid using a fanout IC to achieve the below.

Which metrics (FPGA Output Current, IC Input Current) should I look for in the part datasheet?

 

multiple_sinks.jpg

 

Best Regards.

Mustafa

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borisq
Xilinx Employee
Xilinx Employee
711 Views
Registered: ‎08-07-2007

hi @mcetinsoy

 

Please refer to "Unidirectional Multi-Drop Topographies" in PCB user guide for a specific FPGA family.

For example, if you are using 7 series FPGA, please look at UG483 page 50.

http://www.xilinx.com/support/documentation/user_guides/ug483_7Series_PCB.pdf

You may need to run ibis simulation to validate your design.

 

Thanks,

Boris

 

 

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1 Reply
borisq
Xilinx Employee
Xilinx Employee
712 Views
Registered: ‎08-07-2007

hi @mcetinsoy

 

Please refer to "Unidirectional Multi-Drop Topographies" in PCB user guide for a specific FPGA family.

For example, if you are using 7 series FPGA, please look at UG483 page 50.

http://www.xilinx.com/support/documentation/user_guides/ug483_7Series_PCB.pdf

You may need to run ibis simulation to validate your design.

 

Thanks,

Boris

 

 

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