Confusion on how external memory modules connected to imxrt1176 in mimxrt1170-evk board

[Shehan_Janidu]

I want to access external memory interfaces of imrt1176 in mimxrt1170-evk. To do that I found out that SEMC and flexspi modules can be used. But my doubt is what are the exact peripherals can be accessed through these modules. The biggest doubt is NOR flash. In datasheet it says NOR flash could be accessed via SEMC. But I saw an example code which connects NOR flash via flexspi. I want to clarify this issue. 

The next issue is, I coudnt foundout any example codes to access OCT Flash and QSPI flash access via SEMC. Can anyone show me some examples for that.

Final question,  is there any internal flash in imxrt1176 chip

[Shehan_Janidu]

"RT1176 can access SPI NOR flash via flexspi and access parallel NOR flash via SEMC". So what does this mean ? Sorry for the inconvinence

[jingpan]

Hi,

FlexSPI can only support serial nor flash because it is a SPI port.

SEMC can only support parallel nor flash.

Regards,

[jingpan]

Hi @Shehan_Janidu ,

RT1176 can access SPI NOR flash via flexspi and access parallel NOR flash via SEMC. Both of them can execute in place(XIP).

RT1176 use flexspi to access OCTAL flash/QUAD flash/HyperFlash. They are serial memory.

RT1176 hasn't  internal Flash. Only RT1024 and RT1064 have.

Regards,

Jing

[Shehan_Janidu]

So does that mean, same NOR flash could be accessed parallelly and serially with the use of SEMC and flexspi respectively ?

[jingpan]

Hi,

No, there isn't NOR flash support either serial access and parallel access.

Octal flash is serial flash.

Regards,

Jing