Filter
Top Products
62 Design Guide
Intel
®
31244 PCI-X to Serial ATA Controller
Test Methodology
The SATA specification defines Figure 24 using values from Table 26 for the legal signaling levels
and jitter.
Several of oscilloscopes provide eye pattern masking options to allow the user to set up a mask for
serial data streams such as Serial ATA. Automating this measurement through oscilloscope eye
mask setup takes a the qualitative guess work out of eye pattern analysis.
Figure 24. Serial ATA Eye Diagram
B0606-01
+Vmax
+Vmin
V
2
-Vmax
-Vmin
T
1
T
2
T
3
T
4
T
5
T
6
T
7
T
8
Illegal
Region
Table 27. Timing Requirement
Name Definition Notes
Tjitter t3 -t1 t3 - t1 = t8 - t6
Tt7 - t2
t2 - t1 = t3 - t2
t7 - t6 = t8 - t7
Vdiff V2 - V1