i.MX 8M Plus DDR4 bit swapping

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i.MX 8M Plus DDR4 bit swapping

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faridmousavi
Contributor I

Hello,

We are trying to design a custom board based on the i.MX 8M Plus using DDR4. I would like to know if the following bit swap configuration is correct?

DDR4          i.MX8MP

DQ0 ----> DRAM_DQ08

DQ1 ----> DRAM_DQ09

DQ2 ----> DRAM_DQ10

DQ3 ----> DRAM_DQ13

DQ4 ----> DRAM_DQ15

DQ5 ----> DRAM_DQ12

DQ6 ----> DRAM_DQ14

DQ7 ----> DRAM_DQ11

DQ8 ----> DRAM_DQ01

DQ9 ----> DRAM_DQ02

DQ10 ----> DRAM_DQ07

DQ11 ----> DRAM_DQ04

DQ12 ----> DRAM_DQ00

DQ13 ----> DRAM_DQ03

DQ14 ----> DRAM_DQ06

DQ15 ----> DRAM_DQ05

 

My second question is if this configuration is correct, how should I perform the initialization process as there is no dedicated tab for this purpose on MX8M_Plus_DDR4_RPA_v5?

Thank you

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Rita_Wang
NXP TechSupport
NXP TechSupport

Yes, your connections are OK, for the ddr configuration you can see the https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8MPlus-m865S-DDR-Register-Programmi...

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