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what is the difference between ARM cortex M3 and ARM cortex A9

I need information about difference in registers and RAM and pins, i want to write CAN code to ARM cortex A9 by taking the reference of ARM cortex M3 code, can anyone please share information to me ASAP.

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Haiyan over 6 years ago +1

They are quite different. CM3 is based on ARMv7M architecture while CA9 is based on ARMv7A architecture. No, you can't refer the code of CM3 to CA9's code. Some key differences: CA9 supports out of order...
42Bastian Schick over 6 years ago +1

CAN is not part of the core but the SoC. So if the vendor uses the same CAN IP for a CM3 based SoC and a CA9 based one, you can likely re-use the code.

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0 Andy Neil over 6 years ago in reply to 42Bastian Schick

42Bastian Schick said:
CAN is not part of the core but the SoC. So if the vendor uses the same CAN IP for a CM3 based SoC

Tejadeep - The same applies for any Core - whether it's ARM7, Cortex-Mx, or whatever.

For more on the distinction between the Core and the rest of the chip, see:

https://community.arm.com/developer/tools-software/tools/f/keil-forum/43684/lpc2148-timer0-not-working-as-expected/158950#158950
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0 Andy Neil over 6 years ago in reply to 42Bastian Schick

42Bastian Schick said:
CAN is not part of the core but the SoC. So if the vendor uses the same CAN IP for a CM3 based SoC

Tejadeep - The same applies for any Core - whether it's ARM7, Cortex-Mx, or whatever.

For more on the distinction between the Core and the rest of the chip, see:

https://community.arm.com/developer/tools-software/tools/f/keil-forum/43684/lpc2148-timer0-not-working-as-expected/158950#158950
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