[SOLVED] Problem connecting Wiznet module to Virtex6. 3.3v to 2.5v

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Hi.
I started to design a new board base on Virtex6.
We used W5300 (Embedded Ethernet Controller from Wiznet) in last works and I'm familiar with it and it's easy to me to use it.
but the problem is that W5300 works with 3.3v and Virtex6 operate on VCCO =2.5v.

Is that a good idea to connect them with voltage translators? (there is 36 bit connection between them)
Is there any other module like W5300 that supports 2.5v interface?

 

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My message to Wiznet:

Hi.
I'm designing a FPGA based boards that will use W5300 as TCP/IP controller. The FPGA is of Xilinx Virtex 6 family.
My problem is that the Virtex 6 has no 3.3 I/O interface an it's maximum I/O voltage is 2.5v.

I want to know
1. can I connect W5300 to Virtex 6 with out any level shifter?
2. Do you have other TCP/IP controller that supports 2.5v I/O interface?

 

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WIZNET Rplied:

Hi,
According to W5300's DC characteristics(refer to datasheet page 119),
You can connect W5300 board to your board.
But we does'nt recommanded this connection for board stability.
We recommand to use voltage shifter.

Thanks.

Hi,
One consideration is that your board can input W5300's 3.3V output?
In other words, W5300 can input your input 2.5V.
But I wonder your board can input W5300 output 3.3V ?

Thanks.

 

[sivamani]

Better to use Level translators..

 

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yes, I'm on it.