Intel W3540 AT80601000921AB User Manual

Product codes
AT80601000921AB
Page of 106
Intel® Xeon® Processor 3500 Series Datasheet Volume 1 
11
Introduction
• Unit Interval (UI) — Signaling convention that is binary and unidirectional. In 
this binary signaling, one bit is sent for every edge of the forwarded clock, whether 
it is a rising edge or a falling edge. If a number of edges are collected at instances 
t
1
, t
2
, t
n
,...., t
then the UI at instance “n” is defined as:
UI 
n
 = t 
– t 
n – 1
• Jitter — Any timing variation of a transition edge or edges from the defined Unit 
Interval.
• Storage Conditions — Refers to a non-operational state. The processor may be 
installed in a platform, in a tray, or loose. Processors may be sealed in packaging or 
exposed to free air. Under these conditions, processor lands should not be 
connected to any supply voltages, have any I/Os biased, or receive any clocks.
• OEM  Original Equipment Manufacturer.
1.2
References
Material and concepts available in the following documents may be beneficial when 
reading this document.
Note:
1.
Document is available publicly at 
§
Table 1-1.
References
Document
Reference #
Notes
Intel® Xeon® Processor 3500 Series Specification Update
321333
1
Intel® Xeon® Processor Series Datasheet, Volume 2
321344
1
Intel® Xeon® Processor 3500 Series and LGA1366 Socket 
Thermal and Mechanical Design Guide
321461
1