That’s the chip I mentioned above.
ROYOHO M7011-B-EL
I have a bunch going on right now trying to get the bathroom to the point where I can rip out all of the dwv and reinstall. One bathroom in the house so it all has to be staged and happen at the same time, hopefully tomorrow. If I can get some free time, I’ll break out the scope and reverse engineer it and go from there. Maybe it’ll show me something helpful.