EP2S180F1020C4 Datasheet, PDF (746/768 Pages) Altera Corporation – Stratix II Device Handbook, Volume 1

Transmission Line Layout
Figure 11–10. Input & Output Signals with & without Pre-Emphasis
|H (jw)|
1
Signal is attenuated
at high frequencies.
Input Vi (t)
Vi (t)
W
Transmission Line
Vo (t)
Output Vo(t)
t
Input signal approximates
a square wave but has no
pre-emphasis.
Vi (t)
t
Output signal has higher rise time,
and the eye opening is smaller.
Vo (t)
t
Input signal has pre-emphasis.
t
Output signal has similar rise
time and eye opening as input
signal.
11–10
Stratix II Device Handbook, Volume 2
Altera Corporation
May 2007