Adjust the DDR refresh interval

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Adjust the DDR refresh interval

762 Views
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 ?

Labels (1)
0 Kudos
3 Replies

546 Views
ufedor
NXP Employee
NXP Employee

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.

0 Kudos

546 Views
ivanzhang
Contributor II

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

0 Kudos

546 Views
ufedor
NXP Employee
NXP Employee

Use higher refresh rate from the very beginning.

0 Kudos