SNLS144K June 2005 – March 2024 DS40MB200
PRODUCTION DATA
Figure 8-4 through Figure 8-9 show how the signal integrity varies at different places in the data path. These measured locations can be referenced back to the labeled points provided in Figure 8-3.
The source signal is a PRBS-7 pattern at 4 Gbps. For the long output traces, the eye after 40 inches of output FR4 trace is significantly improved by adding –9 dB of pre-emphasis.