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STM32C5 might have a hidden 10BASE-T1S MAC that was cut from development (see nucleo schematic). Not sure if it is possible to bring it back using just the definitions for the ETH_MAC10BT1SCR register or if they are fused out. #stm32 community.st.com/t5/stm32-mcu... github.com/STMicroelect...

community.st.comEthernet 10Base-T1S on the STM32C5Hi, On the stm32c5 nucleo board (NUCLEO-C5A3ZG) there is T1S OA PMD driver (not mounted?).  In the header file  "stm32c593xx.h" exists a 10BASE-T1S control register "MAC10BT1SCR".  But there is no doc...

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