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Altera_Forum
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10 years ago

LVDS termination resistors on Cyclone III or Stratix III DSP development kits

I am currently working on implementing a design on a Cyclone III dev board with the DAC5681zEVM and ADS5560EVM connected to the FGPA via the HSMC connectors. We are having to install external termination resistors on the FPGA board to send the LVDS signals between the FGPA board and the ADC / DAC.

If I would have purchased the Cyclone III DSP development kit (which includes the data conversion HSMC board), would the external termination resistors for LVDS signals have already been installed? Does the Stratix III DSP development kit (which also includes the data conversion HSMC board) require external resistors or does it have on-chip termination?

Thanks,

Erin

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