System level approach for assessing and mitigating differential skew for 10+ Gbps SerDes applications

Weave-induced skew on printed wiring boards (PWB) for 10+ Gbps SerDes data rates can be very significant. In this paper, we not only investigate weave-induced skew but also look at other sources of skew. We show the weave skew results taken from measurements of three different test boards. Results f...

Full description

Saved in:
Bibliographic Details
Main Authors: Degerstrom, M.J., Buhrow, B.R., McCoy, B.O., Zabinski, P.J., Gilbert, B.K., Daniel, E.S.
Format: Conference Proceeding
Language:English
Subjects:
Dielectric constant
Dielectric materials
Glass
Insertion loss
Power measurement
Probes
Resins
Stripline
Testing
Wiring
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Weave-induced skew on printed wiring boards (PWB) for 10+ Gbps SerDes data rates can be very significant. In this paper, we not only investigate weave-induced skew but also look at other sources of skew. We show the weave skew results taken from measurements of three different test boards. Results from a fourth board are presented to examine PWB differential via skew. Measurements from a fifth board are analyzed to determine total channel skew. We propose a budget such that a certain amount of skew can be tolerated with a small increase in channel insertion loss. We then present a case study to project overall performance on PWB yield. We observe a number of anomalies with our test results and suggest additional studies to guard against unpredicted high skew.
ISSN:0569-5503
2377-5726
DOI:10.1109/ECTC.2008.4550021