LVDS Eye Diagram
Jitter, Noise, and Signal Attenuation
As the bit stream travels from the transmitter on one end of a link to the receiver on the other end, it is subject to the following disruptive influences:
Deterministic (i.e., predictable) jitter induced by the Link transmission line.
Data-dependent jitter induced by the dynamic data patterns on the Link.
Noise induced into the signal pair.
Signal attentuation due to the impedance effect of the transmission line.
The Eye Test
Refer to Figure 12-10 on page 472. In order to ensure that the differential receiver receives an in-specification signal, an eye test is performed. The following description of the eye diagram was provided by James Edwards from an article he authored for OE Magazine. The ...
Get PCI Express System Architecture now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
