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Visitor robunderhill
Visitor
4,515 Views
Registered: ‎06-09-2008

Virtex-5 / PROM JTAG voltages

I'm using a XCF32P PROM with a Virtex-5 and want to run the configuration interface at 1.8V. I've therefore wired the Bank 0 Vcco of the FPGA to 1.8V. Now the PROM must have have a VCCJ (JTAG voltage) of at least 2.5V, but the FPGA JTAG pins are also in Bank 0, which is 1.8V.

 

Is it possible to have these two devices on the same chain (ie are the FPGA JTAG pins tolerant of 2.5V)?

 

Thanks for any help.

 

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Visitor peterprism
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3,220 Views
Registered: ‎05-21-2008

Re: Virtex-5 / PROM JTAG voltages

Did you find an answer? What did you do? I want to do exactly the same thing but on a Virtex 4LX device.

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