Dear community,
We investigate a DDR3 clock quality for JEDEC clock jitter test.
We need to output the DDR3 clock continuously .
We executed the " mtest command " on uboot.
However the clock became the intermittent output.
Question.
What kind of method can we output the DDR3 clock in continuously ?
Best Regards,
Koichi Sakagami
已解决! 转到解答。
Hello,
The i.MX6 MMDC provides clock for DRAM parts, and - I am afraid -
this is impossible to configure clock generation logic in order to get
continuous or burst clocks. Basically, clocks are started as soon as
a DRAM chip select is enabled.
Please try using Stress DDR tool.
https://community.freescale.com/docs/DOC-96412
https://community.freescale.com/docs/DOC-105652
Have a great day,
Yuri
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Hello,
The i.MX6 MMDC provides clock for DRAM parts, and - I am afraid -
this is impossible to configure clock generation logic in order to get
continuous or burst clocks. Basically, clocks are started as soon as
a DRAM chip select is enabled.
Please try using Stress DDR tool.
https://community.freescale.com/docs/DOC-96412
https://community.freescale.com/docs/DOC-105652
Have a great day,
Yuri
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------