Intel E5405 AT80574KJ041N Data Sheet

Product codes

AT80574KJ041N

Quad-Core Intel® Xeon® Processor 5400 Series Electrical Specifications

Notes:

VOS is the measured overshoot voltage.

TOS is the measured time duration above VID.

2.13.3

Die Voltage Validation

Core voltage (VCC) overshoot events at the processor must meet the specifications in

Table 2-18

when measured across the VCC_DIE_SENSE and VSS_DIE_SENSE lands

and across the VCC_DIE_SENSE2 and VSS_DIE_SENSE2 lands. Overshoot events that
are < 10 ns in duration may be ignored. These measurements of processor die level
overshoot should be taken with a 100 MHz bandwidth limited oscilloscope.

2.14

AGTL+ FSB Specifications

Routing topologies are dependent on the processors supported and the chipset used in
the design. Please refer to the appropriate platform design guidelines for specific
implementation details.

In most cases, termination resistors are not required as these

are integrated into the processor silicon. See

Table 2-8

for details on which signals do

not include on-die termination. Please refer to

Table 2-19

for R

values.

Valid high and low levels are determined by the input buffers via comparing with a
reference voltage called GTLREF_DATA_MID, GTLREF_DATA_END, GTLREF_ADD_MID,
and GTLREF_ADD_END. GTLREF_DATA_MID and GTLREF_DATA_END is the reference
voltage for the FSB 4X data signals, GTLREF_ADD_MID, and GTLREF_ADD_END is the
reference voltage for the FSB 2X address signals and common clock signals.

Table 2-19

lists the GTLREF_DATA_MID, GTLREF_DATA_END, GTLREF_ADD_MID, and
GTLREF_ADD_END specifications.

Figure 2-11. V

Overshoot Example Waveform

Example Overshoot Waveform

Time [us]

e [V

]

VID - 0.000

VID + 0.050

: Overshoot time above VID

: Overshoot above VID