Hi,
I am drawing schematics for a new system that uses a Cyclone 3 FPGA. I have some LVTTL (3V3) signals on which I would like to use a 50R series termination. The Cyclone 3 has two possible 50R series terminations:
- not calibrated
- calibrated The handbook doesn't specify the standards that can be used with the calibrated termination. Has anybody got this data? The handbook mentions that the uncalibrated termination can be used with 3.0V LVTTL, it doesn't mention 3.3V LVTTL, is this a typo -or- is
3.3V LVTTL with on-chip termination not supported?thanks and best regards, Karel D