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Altera_Forum's avatar
Altera_Forum
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16 years ago

NIOS2 reset under high temperature

Hi all,

I am currently working with a Cyclone III and I have a problem with my NIOSII when the temperature reach around 83 °.

My NIOSII code is executed in a DDR memory and when my CycloneIII reaches this temperature, my NIOSII is reseting

I have few ideas:

* Noise on the core voltage with this temperature.

* Access time in the DDR too long (so the NIOSII is executing bads intructions).

* Bad constraints in timequest.

How can i identify the source of this problem ?

Have you some ideas to fix it ?

Thanks.

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Hello,

    I've exactly the same problem but it's not nios2 reset but a FPGA reconfiguration.

    Someone can help me ?

    DDR at 166.67 MHz (same problem with DDR at 133.33 MHz)

    Nios2 at 100MHz

    Thanks