STM32F107 and "dedicated 4k RAM for ETH DMA"?

[peter-h]

The description states "10/100 Ethernet MAC with dedicated DMA and SRAM (4Kbytes)".

It is curious since the 32F417 doesn't appear to have any "4k RAM" for ETH; the ETH buffers go into main RAM.

The 32F107 DS is dated 2017 which probably makes it more recent than the 32F417.

I looked at the 107 out of curiosity because it comes up below

[DavidAlfa]

[peter-h]

That's the same as the 32F4 (RM0090) diagram (Fig 350).

[DavidAlfa]

And there you have your 4KB dedicated RAM, it's the fifo buffers!
The DMA will transfer those buffers anywhere into conventional ram.

[peter-h]

OK; FIFO for 1 x MTU. A bit of a con to call it RAM