i.MX Processors中的主题 Re: Maximum RAM size i.MX 8M can support

Maximum RAM size i.MX 8M can support

shuodo — Mon, 07 Mar 2022 17:06:51 GMT

Hi,

I would like to find out the maximum RAM size i.MX 8M can support.

I read the reference manual of IMX 8M. Section 2.1.2 A53 memory map, it says DDR memory size is 1 + 3 = 4GB:

However, in section 9.1.1.1, DRAM interface summary says max up to 8GB of memory:

Which one is correct?

Or both are correct? They could be different things: one for DDR memory map size, the other one is for the max DDR size that DDR interface can support? If this is true, how could it handle map 8GB DDR into 4GB of memory space?

Best regards.

Re: Maximum RAM size i.MX 8M can support

joanxie — Wed, 09 Mar 2022 04:00:23 GMT

do you mean imx8mm, imx8mn, imx8mq or imx8mp?

Re: Maximum RAM size i.MX 8M can support

shuodo — Wed, 09 Mar 2022 14:33:23 GMT

I believe it is IMX 8MQ (Q for quad).

This is the link:

https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i-mx-applications-processors/i-mx-8-processors/i-mx-8m-family-armcortex-a53-cortex-m4-audio-voice-video:i.MX8M

Re: Maximum RAM size i.MX 8M can support

joanxie — Thu, 10 Mar 2022 03:07:05 GMT

for imx8mq, the max density is 4G