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isaacphillips
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Registered: ‎10-17-2011

SP605 Development Kit: User SMA GPIO pin input voltage.

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Hello All,

I have a SP605 Development board that I am trying to connect to an incremental encoder . The incremental encoder uses a supply voltage of 15VDC and has an high ouput voltage of 12V. I am having a hard time finding what the Vih is for the two User SMA GPIO inputs(J39 and J40) on the development board. I know the FMC on this board uses a voltage of 2.5V, but I would like to get a conformation on the voltage for these SMA connectors before I fry something. Thanks in advance. 

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austin
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3,909 Views
Registered: ‎02-27-2008

i,

 

DON'T DO IT!

 

The input pin voltage on any pin, must be less than or equal to the VCCO of that bank.

 

2.5v bank = 2.5v maximum input voltage.


You will need an external voltage level translator circuit or component to reduce the voltages to the levels that are needed.

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose

View solution in original post

1 Reply
austin
Scholar
Scholar
3,910 Views
Registered: ‎02-27-2008

i,

 

DON'T DO IT!

 

The input pin voltage on any pin, must be less than or equal to the VCCO of that bank.

 

2.5v bank = 2.5v maximum input voltage.


You will need an external voltage level translator circuit or component to reduce the voltages to the levels that are needed.

 

 

Austin Lesea
Principal Engineer
Xilinx San Jose

View solution in original post