Re: Ethernet direct RMII connection

2024-02-29 Thread Nathan Hartman
RMII just means it uses fewer I/O pins from the MCU as compared to MII. I don't remember the details either but it's possible that some chips support RMII and not MII because they don't have the additional I/O pins. Tiva-C (arch/arm/src/tiva) supports RMII (the chip has the built-in MAC and PHY) s

Re: Ethernet direct RMII connection

2024-02-29 Thread Alan C. Assis
Hi Roland, We had a discussion about it a few months ago! We know it is possible, but nobody until now tried to do it. Basically you will need RMII support on both chips, I don't remember the details why MII will not work (or will be more difficult to work) There is a discussion about it here,

Ethernet direct RMII connection

2024-02-29 Thread Roland
Hi, I would like to directly connect a STM32F7 processor running Nuttx, to an external MCU (i.e., NXP imx8m) through RMII directly, without the need for PHY IC in between. Is this supported by Nuttx? I checked into the documents but this direct mode seems not been mentioned anywhere. Can anyon