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Altera_Forum
Honored Contributor
7 years agoFor example, at Cyclone 10 GX datasheet ( https://www.altera.com/en_us/pdfs/literature/hb/cyclone-10/c10gx-51002.pdf ) page 19, VCM is defined as 1.25 V and Minimum Voltage swing is defined 200 mV ( 2*VID = 2 * 100 ) . There is no Max value is defined. For the data rates below 700 Mbps Swing from 0 to 1.85V, For data rates above 700 Mbps , Swing from 1,0 V to 1.6V ( For optimized LVDS receiver performance, the receiver voltage input range must be within 1.0 V to 1.6 V for data rates above 700
Mbps and 0 V to 1.85 V for data rates below 700 Mbps. ) is this correct? Am I missing something?