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STM32H743ZI Ethernet with RCC_AHB2ENR_D2SRAM3EN not enabled

Manu Abraham
Senior

Greetings,

Maybe someone can help me in having a bit of understanding in here:

Does the Ethernet peripheral still work with RCC_AHB2ENR_D2SRAM3EN not enabled ?

(This is with the RX buffers, Tx/Rx Descriptor tables located at 0x30040000)

From the RM, checking again, SRAM3 is at 0x30040000 - 0x30047FFF

In the given situation that, I do not turn ON the D2SRAM3 clock, but Ethernet is functional.

It does transmit and receive packets.

Is that possible at all ?

Maybe a completely stupid question, If I can Rd/Wr to SRAM3 (pbufs, descr's are in there) without enabling the AHB2 CLK, what functionality would be lacking to SRAM3, If I do not enable it ?

Thanks,

Manu

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