RT1170 CM4 TCM Allocation Question

[lsrbigfoot]

So, section 34.7.2.2.2 (TCM Arrays) of IMXRT1170RM states the following for the CM4 core:

• code TCM size is 128 KBytes (0x1FFE0000 - 0x1FFFFFFF)
• system TCM size is 128 KBytes (0x20000000 - 0x2001FFFF)
• code TCM and system TCM sizes do not have to be equal

Is it possible for both code TCM and system TCM regions to be redefined in a custom manner?

Example custom allocations include:

• 192 KBytes of code TCM (0x1FFE0000 - 0x2000FFFF)
• 64 KBytes of system TCM (0x20010000 - 0x2001FFFF)

I know this is possible for CM7's TCM space by reconfiguring the fuses.
Is the same kind of approach possible with CM4's TCM space?

[Omar_Anguiano · Accepted solution]

Unfortunately, the TCM size for M4 is not reconfigurable, it has a fixed size. I apologize for the inconvenience this may cause you. 

Best regards,
Omar

[lsrbigfoot]

...correcting example allocation in my previous post to stay in line with absolute range limits:

• 192 KBytes of code TCM (0x1FFD0000 - 0x1FFFFFFF)
• 64 KBytes of system TCM (0x20000000 - 0x2000FFFF)