i.MX ProcessorsのトピックRe: Issues about DDR Stress test

Issues about DDR Stress test

tony_l_cai — Mon, 03 Aug 2015 03:05:03 GMT

Hi all，

Our board has 2GB DDR3-1600 on MX6DL, its MMDC can support the speed to 400MHz, and could we run it at 672MHz by DDR stress tool?

Re: Issues about DDR Stress test

weidong_sun — Mon, 03 Aug 2015 03:21:19 GMT

Hi Toni,

DDR stress tools is used to check your DDR3 performance, The real clock you run will be determined by your PCB , if your PCB design is better, accroding to previous experience，MMDC clock may be near to about 450MHz by using DDR stress tool , if the clock is above 450MHz, maybe data test will be failed.

Here 450MHz is just an experiential value, just an example, at the time, you can set MMDC clock to be 400MHz, it will be reliability for your product.

Hope above suggestions can help you !

Regards,

Weidong

Re: Issues about DDR Stress test

Yuri — Mon, 03 Aug 2015 03:44:25 GMT

Customers should apply DDR frequencies for allowed (specified) range for applications.

For testing extended frequency range may be used for assurance.

Have a great day,
Yuri

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Re: Issues about DDR Stress test

tony_l_cai — Tue, 04 Aug 2015 09:10:36 GMT

Hi,Weidong，

Now I have test the DDR by Stress Tool,and it can pass up to 432MHz, and 452MHz is failed.So could you tell me what the test result above can illustrate?

Whether do the parameters from .inc need to pass all the freq ranging from 333MHz to 672MHz?