Техническая Спецификация для Intel E3-1105C AV8062701048800

Intel

®

 Xeon

®

 and Intel

®

 Core™ Processors For Communications Infrastructure

May 2012

Datasheet - Volume 1 of 2

Document Number: 327405

-

001

115

Overshoot/Undershoot and Ringback specifications for BCLK/BCLK# are found in 

. Overshoot/Undershoot and Ringback specifications for the DDR3 Reference 

Clocks are specified by the DIMM.

Signal Quality specifications for Differential DDR3 Signals are included as part of the 

DDR3 DC specifications and DDR3 AC specifications. Various scenarios have been 

simulated to generate a set of layout guidelines which are available in the  appropriate 

platform design guide.

Signal Quality specifications for PCIe* Signals are included as part of the PCIe* DC 

specifications and PCIe* AC specifications. Various scenarios have been simulated to 

generate a set of layout guidelines which are available in the  appropriate platform 

design guide.

Overshoot (or undershoot) is the absolute value of the maximum voltage above or 

below V

SS

. The overshoot/undershoot specifications limit transitions beyond V

CCIO

 or 

V

SS

 due to the fast signal edge rates. The processor can be damaged by single and/or 

repeated overshoot or undershoot events on any input, output, or I/O buffer if the 

charge is large enough (i.e., if the over/undershoot is great enough). Baseboard 

designs which meet signal integrity and timing requirements and which do not exceed 

the maximum overshoot or undershoot limits listed in 

performance for the lifetime of the processor.

When transitioning from a high-to-low current load condition, the processor can 

tolerate short transient overshoot events where V

CC

 exceeds the HFM_VID voltage. 

This overshoot cannot exceed VID + V

OS_MAX.

 V

OS_MAX

 is the maximum allowable 

overshoot above VID. These specifications apply to the processor die voltage as 

measured across the V

CC_SENSE

 and V

SS_SENSE

 lands.

V

OS_MAX

Magnitude of V

CC

 overshoot above VID

-

50

mV

1

T

VCC_OS_MAX

Time duration of V

CC

 overshoot above VID

-

10

µs

1

1.

For overshoot, SVID is inclusive of the tolerance band (TOL

VCC

) and ripple.