25
Quad-Core Intel® Xeon® Processor 5400 Series Electrical Specifications
Note:
1.
V
TT
supplies the PECI interface. PECI behavior does not affect V
TT
min/max specifications.
2.
The leakage specification applies to powered devices on the PECI bus.
3.
One node is counted for each client and one node for the system host. Extended trace lengths might appear
as additional nodes.
2.10.2
Input Device Hysteresis
The input buffers in both client and host models must use a Schmitt-triggered input
design for improved noise immunity. Use
Figure 2-1
as a guide for input buffer design.
Table 2-10. PECI DC Electrical Limits
Symbol
Definition and Conditions
Min
Max
Units
Notes
1
V
in
Input Voltage Range
-0.150
V
TT
V
V
hysteresis
Hysteresis
0.1 * V
TT
N/A
V
V
n
Negative-edge threshold
voltage
0.275 * V
TT
0.500 * V
TT
V
V
p
Positive-edge threshold
voltage
0.550 * V
TT
0.725 * V
TT
V
I
source
High level output source
(V
OH
= 0.75 * V
TT
)
-6.0
N/A
mA
I
sink
Low level output sink
(V
OL
= 0.25 * V
TT
)
0.5
1.0
mA
I
leak+
High impedance state leakage
to V
TT
(V
leak
= V
OL
)
N/A
50
µA
2
I
leak-
High impedance leakage to
GND
(V
leak
= V
OH
)
N/A
10
µA
2
C
bus
Bus capacitance per node
N/A
10
pF
3
V
noise
Signal noise immunity above
300 MHz
0.1 * V
TT
N/A
V
p-p
Figure 2-1. Input Device Hysteresis
Minimum V
P
Maximum V
P
Minimum V
N
Maximum V
N
PECI High Range
PECI Low Range
Valid Input
Signal Range
Minimum
Hysteresis
V
TT
PECI Ground
Summary of Contents for E5420 - CPU XEON QUAD CORE 2.50GHZ FSB1333MHZ 12M LGA771 HALOGEN FREE TRAY
Page 1: ...318589 005 Quad Core Intel Xeon Processor 5400 Series Datasheet August 2008 ...
Page 8: ...8 Quad Core Intel Xeon Processor 5400 Series Datasheet ...
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Page 106: ...Boxed Processor Specifications 106 Figure 8 4 Top Side Board Keepout Zones Part 1 ...
Page 107: ...107 Boxed Processor Specifications Figure 8 5 Top Side Board Keepout Zones Part 2 ...
Page 108: ...Boxed Processor Specifications 108 Figure 8 6 Bottom Side Board Keepout Zones ...
Page 109: ...109 Boxed Processor Specifications Figure 8 7 Board Mounting Hole Keepout Zones ...
Page 110: ...Boxed Processor Specifications 110 Figure 8 8 Volumetric Height Keep Ins ...