Adjust the DDR refresh interval

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Adjust the DDR refresh interval

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ivanzhang
Contributor II

Can I adjust the register DDR_SDRAM_INTERVAL of P2020 after the MEM_EN bit of the register DDR_SDRAM_CFG has been setted ?

If it can't be realized, how can I adjust the refresh interval when the DDR controller is working ?

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ufedor
NXP TechSupport
NXP TechSupport

During normal DDR controller operation it is not required to change its registers values, so the controller behaviour is not specified/guaranteed after a register value is changed when MEM_EN=1.

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296 Views
ivanzhang
Contributor II

When Tcase of DDR is over 105℃, I need to change the refresh interval, so how to realize?

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296 Views
ufedor
NXP TechSupport
NXP TechSupport

Use higher refresh rate from the very beginning.

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