Hello,
I want to control the 10BASE-T1L signal level (1Vpp or 2.4Vpp) but it is not clear to me how to set it. I have tried changing straps and registers in various ways, but the signals I see on the oscilloscope are always the same.
The signals vary roughly 5Vpp, see picture. This makes me think it is transmitting at the 2.4Vpp level. I tried using the 2.49K pull-up on strap 7 of both devices on either end of the link. I believe this should force 1Vpp signaling, but the signals I see on the scope don't change.
Ideally, I would like to set the signal level using the straps (rather than MDIO commands). Can someone help me out with this?
Thanks,
Cyrus