Architectures and Processors forum Cortex M7 can't issue 0xF0000000 address

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Cortex M7 can't issue 0xF0000000 address

Hsu HANWENHSU over 1 year ago

Hi, I'm using Cortex M7 to access peripheral which address starts from 0xF0000000

But it can't send out this address, I found that 0xE0100000~0xFFFFFFFF belongs to vendor-specific device

How can I Read/Wrtie 0xF0000000?

Should I do some setting to MPU?

Thanks

Top replies

Mahmood Yakub over 1 year ago +1 verified

Accesses to the System segment (0xE0100000-0xFFFFFFFF) are always performed over the AHBP interface, irrespective of the setting of the AHBP Control Register. Please refer to Table 2-1 "Memory regions...

+1 Mahmood Yakub over 1 year ago

Accesses to the System segment (0xE0100000-0xFFFFFFFF) are always performed over the AHBP interface, irrespective of the setting of the AHBP Control Register.

Please refer to Table 2-1 "Memory regions" of the Cortex-M7 TRM
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0 Hsu HANWENHSU over 1 year ago in reply to Mahmood Yakub

Thanks a lot! I did found this addr is issue through AHBP interface.
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