Uninformed users short everything to everything
on a connector/ribbon-cable carrying both I2C (raw) and 48V
high frequency chopped current to drive LEDs on a remote
(8 feet away) board. This results in destroyed CPUs, a destroyed,
or at best corrupted Eprom, and various other maladies.
A CAN chip would be perfect except we can't use the raw RX/TX interface
because of software limitations. We need it to be transparent I2C.
we haven't found yet.
We have found some solutions which help with signal integrity and some EMI, ESD,
but not with 48V shorts to the bus.
Any help appreciated.
Tom
