GEN1 SIGNAL INTEGRITY	GEN2 SIGNAL INTEGRITY
1986 to 2006	2007 to Present
Parallel	Serial
8 MHz to 3 GHz	4 to 70 GHz
System of ICs	IC dictates System
Mysterious “black magic”	Basic Science
Buffer VI/Slew	SerDes Equalization
Trace Length Rules	P/N Symmetry
Common & Source Clocks	Recovered Clock
AC Timings	Eye Diagrams, BER
Topology / Termination	Point-to-Point
Trace Impedance	Feature Impedance
Flight Time	Loss, Discontinuities
Ground Planes	Ground Returns/Grids
Stackup	Weave & Copper Profiles