I'd like to use one of the following chips/boards but I first need to figure out what the voltage levels are on the RMII side (TXD_0, TXD_1, RXD_0, RXD_1 or RXIP, RXIN, TXOP, TXIN for the third chip). Each of the datasheets has an electrical specifications section where probably the required information is hidden in plain sight for me. However none of the parameters listed there refers directly to one of the pins so hopefully someone can help me figuring out what the voltage levels are on the respective pins.
1.
https://www.waveshare.com/dp83848-ethernet-board.htm
datasheet: https://www.waveshare.com/w/upload/1/1c/DP83848C.pdf
2.
**broken link removed**
datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/8720a.pdf
3. see attachment
1.
https://www.waveshare.com/dp83848-ethernet-board.htm
datasheet: https://www.waveshare.com/w/upload/1/1c/DP83848C.pdf
2.
**broken link removed**
datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/8720a.pdf
3. see attachment