It sounds like a double emphasis but indeed, pin 25 of the LTC2323 (http://www.linear.com/product/LTC2323-16) I lets me choose between:
- CMOS (GND)
- LVDS (IOVDD)
- Low-Power LVDS (leave floating)
As often, the datasheet does not bother discussing difference at all and neither does my Google search or Wikipedia ersult in enlightenment.
I want to use "LVDS": I connect the digital lines differentially (100 Ohm terminated) to a Spartan-6 FPGA. The IO voltage is 2.5V. Shall I set the pin to LVDS or Low-Power LVDS?