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Altera_Forum
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17 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
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17 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.