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Altera_Forum
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18 years ago

Strange effect with Stratix FPGA

Hello! I am using a Stratix EP1S10 device on a NIOS II Development Board. I use it for VHDL programming only. That means, I don't use any NIOS stuff in my project. I made my own user configurat...
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Altera_Forum
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18 years ago

Hi larsen!

Thanks for your participation to this thread!

I think I identified the evildoer. It seems to be the LAN91C111 on my board. When I run my own configuration, he becomes hot as hell. When I reload the NIOS configuration with which the board was delivered (and which I use every time, I reconfigure the FPGA with my configuration), the LAN91C111 becomes hot, too, but not quite as hot, as with my configuration (I wonder how he even survived this all the time . . . )

Now, I have a problem: I looked for a pin on the LAN91C111 that says "turn me off" or something like that. But there isn't one. Instead I have to write some bits into some configuration registers I would like to be able to access, but I do not understand the datasheet of this fellow, at all (http://www.smsc.com/main/datasheets/91c111.pdf (http://www.smsc.com/main/datasheets/91c111.pdf)).

Is there anybody out there, who can give me some advise, how to write a simple disable entity for this chip?

Greets,

Maik