31 Oct
2008
31 Oct
'08
11:16 a.m.
Dave McGuire wrote about the ST412 interface:
What do the signals on the data connector look like?
I seem to
recall that there
are some differential pairs on there...are they analog
or digital?
All electrical signals are analog, but I suppose we shouldn't start that
discussion again.
In practical terms, the differential pairs are RS-422, so they are
digital, but you need RS-422 drivers and receivers to talk to them
properly, and termination on the receivers. There are many suitable
quad driver and quad receiver chips, such as the MC3486/3487 and
Am26LS31/32.
Eric