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Altera_Forum's avatar
Altera_Forum
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18 years ago

How to use LVDS?

in datasheet,i find maybe it isn't similar to use LVDS in Cyclone1,cyclone2,and cyclone3, so what can i do if i want to use LVDS? 1,does it need resistor? 2,how many wire i need ? in my opin...
Altera_Forum's avatar
Altera_Forum
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18 years ago

The maximum voltage output differential (VOD) is increased to 600mV. The maximum VOD for ANSI specification is 450mV.

The input voltage range can be reduced to the range of 1.0V to 1.6V, 0.5V to 1.85V or 0V to 1.8V based on different frequency ranges. The ANSI/TIA/EIA-644 specification supports an input voltage range of 0V to 2.4V.

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As above is the CIII's DC/AC Spec.

I want to ask a question:

If I use CIII's a receiver, it can support these Voltage? VIH=0.85V, VIL=0.5V, VID=300mV.

thanks,

tony