DDR4 4GB Interface btw 8MQ and 2x 2GB 16b DDR4

[Jack-Cha]

Hi i.MX 8M Champs

Could you please help to expain about DDR4 interface regarding the Max 4GB ( 2x 2GB ) size support?

A customer would use Micron DDR4, MT40A1G16TB-062EF.

They're unable to pass the stress test yet. Hence we're under support to figure out the cause of failure.

We'd like to check if 2x DDR4 have the appropriate connection with 8MQ.

[Rita_Wang]

I see that the cs pin you do not connect to cpu side in your design, you need to connect to cs0 of the i.MX8MQ.
You can check it.

[Jack-Cha]

Hi 

Thanks for your kind reply.

They used CS0 for both DDR1 and DDR2 as below.

Also attched pdf.

[Rita_Wang]

Could you share us the cpu side picture to us, it is not clear?

[Jack-Cha]

Hi 

CPU side is also included in attached DDR page.pdf from above post.

Thanks.

Regards, 

Jack