i.MX ProcessorsのトピックRe: Negative temperature issue with IMX6D processor

Negative temperature issue with IMX6D processor

Santhosha_rk — Tue, 16 Feb 2016 14:50:23 GMT

Hi,

We are running GPU test demo application supplied by freescale on our custom board having IMX6D processor. The test has been carried out at -20degC. The GPU application boots and application runs for some time, but image freezes after few seconds. The part selected has temperature range of -40 to 125degC. Please let us know what might be the problem.

-Santhosha RK

Re: Negative temperature issue with IMX6D processor

igorpadykov — Wed, 17 Feb 2016 00:33:16 GMT

Hi Santhosha

this may be caused by ddr errors, so one can run ddr test on low temperatures

i.MX6/7 DDR Stress Test Tool V2.40

also recommended to check power supplies, as capacitors may work less

effectively at low temperatures and stability of 24MHz clock.

Best regards

igor

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Re: Negative temperature issue with IMX6D processor

Santhosha_rk — Thu, 17 Mar 2016 12:50:45 GMT

It was the problem with the implementation. supply voltage for core 2&3 were disabled in the schematics. While assembling supply input was connected to core 2 & 3 and the output was shorted. Processor was taking about 3W extra. When we removed the output side short, it worked at negative temperatures