the overshoot specification, when you add the total impact of all overshoot events, the system may fail. A guideline to ensure a system passes the overshoot and undershoot specifications is shown below.

1.If only one overshoot/undershoot event magnitude occurs, ensure it meets the over/undershoot specifications in the following tables, OR

2.If multiple overshoots and/or multiple undershoots occur, measure the worst case pulse duration for each magnitude and compare the results against the AF = 0.1 specifications. If all of these worst case overshoot or undershoot events meet the specifications (measured time < specifications) in the table (where AF= 0.1), then the system passes.

Table 7-25. Processor Sideband Signal Group Overshoot/Undershoot Tolerance

Absolute Maximum Overshoot

Absolute Maximum Undershoot (V)

Pulse Duration (ns)

Pulse Duration (ns)

(V)

 

AF=0.1

AF=0.01

 

 

 

 

1.3335 V

0.2835 V

3 ns

5 ns

 

 

 

 

1.2600 V

0.210 V

5 ns

5 ns

 

 

 

 

Figure 7-11. Maximum Acceptable Overshoot/Undershoot Waveform

Over Shoot

Over Shoot

Duration

Under Shoot

Duration

VSS

Under Shoot

§

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Intel® Xeon® Processor E5-1600/E5-2600/E5-4600 Product Families

 

Datasheet Volume One

Page 186
Image 186
Intel E5-2600, CM8062101038606, E5-4600, E5-1600 manual Maximum Acceptable Overshoot/Undershoot Waveform