Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

LVDS Transmitter and Receiver in Stratix II

hi all, i am designing a board using stratix II FPGA (EP2S15F484C3).. I want to know whether this FPGA has the inbuilt lvds transmitter and receiver or i have to use external lvds transmitte...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

It has internal transmitters. Higher data rates can be achieved only with internal LVDS interface, also you can expect higher immunity against on-board generated interferences. If external transmitters/receivers are required for some reason, you should use differential LVDS repeater chips rather than interfacing the FPGA singled-ended.

You should pay attention however to the I/O-voltage and pin placement requirements when using LVDS. The Quartus Pin Planner helps to keep all constraints.