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Output Voltage Requirements
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3. See Section 2.5 and Table 2-4, Impedance Measurement parameters and definitions
Notes:
1. Z
LL
is the target impedance for each processor and Z(f) value coincides with it’s Load Line slope.
2. Z
LLMAX
is the max allowed Z
LL
tolerance, which still fits within the VccMax and VccMin Load Line limits listed
in Table 2-3; Z
LLMAX
is specific for each processor due to a specific combination of its Load Line value and
IccMax.
3. Z
LLMIN
is the min allowed Z
LL
tolerance, which still fits within the VccMax and VccMin Load Line limits listed
in Table 2-3; Z
LLMIN
is specific for each processor due to a specific combination of its Load Line value and
IccMax.
2.6 Stability - REQUIRED
The VRM/EVRD needs to be unconditionally stable under all specified output voltage
ranges, current transients of any duty cycle, and repetition rates of up to 2 MHz. The
VRM/EVRD should also be stable under a no load condition.
2.7 Processor Power Sequencing - REQUIRED
The VRM/EVRD must support platforms with defined power-up sequences. Figure 2-4
shows a timing diagram of the power-on sequencing requirements. Timing parameters
for the power-on sequence are listed in Table 2-5.
Table 2-4. Impedance Z
LL
Measurement Parameter Limits
Processor
ZLL
1
ZLLMax
2
ZLLMin
3
Fbreak
Notes
Dual-Core Intel
®
Xeon
®
Processor 5000 Series 1.25 mΩ 1.45 mΩ 1.05 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor 5000 Series MV 1.25 mΩ 1.511 mΩ 0.989 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor X5100 Series -Perf. 1.25 mΩ 1.583 mΩ 0.917 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor E5100 Series 1.25 mΩ 1.583 mΩ 0.92 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor L5100 Series LV 1.25 mΩ 1.917 mΩ 0.583 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor X5300 Series -Perf. 1.25 mΩ 1.49 mΩ 1.01 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor E5300 Series 1.25 mΩ 1.583 mΩ 0.917 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor L5300 Series- LV 1.25 mΩ 1.750 mΩ 0.750 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor X5200 Series -Perf. 1.25 mΩ 1.583 mΩ 0.917 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor E5200 Series 1.25 mΩ 1.673 mΩ 0.827 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor L5238 Series 1.25 mΩ 1.850 mΩ 0.650 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor X5482 Series - Perf. 1.25 mΩ 1.450 mΩ 1.050 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor X5400 Series - Perf. 1.25 mΩ 1.490 mΩ 1.010 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor E5400 Series 1.25 mΩ 1.544 mΩ 0.956 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor L5400 Series 1.25 mΩ 1.750 mΩ 0.750 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor X7300 Series - Perf 1.25 mΩ 1.481 mΩ 1.019 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor E7300 Series 1.25 mΩ 1.583 mΩ 0.917 mΩ 2.0 MHz
Dual-Core Intel
®
Xeon
®
Processor 7200 Series 1.25 mΩ 1.583 mΩ 0.917 mΩ 2.0 MHz
Quad-Core Intel
®
Xeon
®
processor L7300 Series 1.25 mΩ 1.750 mΩ 0.750 mΩ 2.0 MHz