Does the i.MX8MP have an Secondary Memory Interface

[HankChang989]

I would like to confirm if the IMX has the same functionality as the Raspberry Pi.

https://iosoft.blog/2020/07/16/raspberry-pi-smi/

[Sanket_Parekh · Accepted solution]

Hello @HankChang989 ,

I hope you are doing well.

->There is no support imx8mplus gives for a secondary memory interface as Raspberry has.
->SMI offers a very fast parallel interface - over 80 megabytes per second on a ZeroW.

->The external memory interface on the i.MX precisely seems the Raspberry Pi's "Secondary Memory Interface". So it's good to use it there is equivalent functionality.
->Using the external memory interface gives better performance and more flexibility about the timings.
->Imx8m plus gives LPDDR4, DDR4 (32-bit up to 4.0GT/s)external memory interface support.

->One can find more features about imx8mp in the below-given link.
https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i-mx-applications-proces...

I hope this information helps you!

Thanks & Regards,

Sanket Parekh

[HankChang989]

Thank you Snaket Parekh for the prompt response.

1.What is the bit width of the Parallel bus address and data? （Are both the address and data 32-bit?）

2.Is there any sample code available for reference?

3.I want to control the timing of 0 and 1 for data bit, is it possible? 

[Sanket_Parekh]

Hello @HankChang989 ,

I hope you are doing well.

1. What is the bit width of the Parallel bus address and data? （Are both the address and data 32-bit?）
->It is not fixed because the programmable Data port sizes for each Chip Select are x8, x16, and x32.
->There is Independent synchronous Memory Burst Read Mode support for NOR-Flash and PSRAM memories like x16 and x32 port size.

About this one can refer to SRAM.
->EIM gives support for multiplexed address/data bus operation x16 and x32 port sizes.

2. Is there any sample code available for reference?
3. I want to control the timing of 0 and 1 for the data bit, is it possible?
->Please kindly share the details about these queries.

Thanks & Regards,

Sanket Parekh

[Sanket_Parekh]

Hello @HankChang989 

I hope you are doing well.

Any Updates from your side?

Thanks & Regards,

Sanket Parekh

[HankChang989]

Thank you for your quick response and following up on the issue.

The issue has been resolved. Thank you for your assistance.

Have a great day!

[Sanket_Parekh]

Hello @HankChang989 ,

I hope you are doing well.

I'm glad that the issue is resolved.
Hence closing this case.

Have a great day!

Thanks & Regards,

Sanket Parekh