About self-refresh of DRAM (LPDDR3)

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About self-refresh of DRAM (LPDDR3)

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goto11
Contributor III

Hello,

The following is described outside the table of Table 5-5 of the reference manual.
Do I have to set the i.MX7D registers to automatically self-refresh when there is no DRAM access?

2.Automatic enter self-refresh when there is no DRAM access.

best regards
Goto

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igorpadykov
NXP Employee
NXP Employee

Hi goto11

 

>Do I have to set the i.MX7D registers to automatically self-refresh when there is no DRAM access?

 

yes this can be implemented by programming REFRESH_TO_X32 field register DDRC_RFSHCTL0
described in sect.9.2.4.5.2 Refresh using auto refresh feature inside the DDRMC

i.MX 7Dual Applications Processor Reference Manual

 

Best regards
igor

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688 Views
igorpadykov
NXP Employee
NXP Employee

Hi goto11

 

>Do I have to set the i.MX7D registers to automatically self-refresh when there is no DRAM access?

 

yes this can be implemented by programming REFRESH_TO_X32 field register DDRC_RFSHCTL0
described in sect.9.2.4.5.2 Refresh using auto refresh feature inside the DDRMC

i.MX 7Dual Applications Processor Reference Manual

 

Best regards
igor

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