Lenovo 59P5107 Datasheet Page 46

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Low Voltage Intel
®
Xeon
Processor at 1.60 GHz, 2.0 GHz and 2.4 GHz
46 Datasheet
The following notes apply to Table 22 through Table 25:
Absolute Maximum Overshoot magnitude of 1.8 V must never be exceeded.
Absolute Maximum Overshoot is measured referenced to V
SS
, Pulse Duration of overshoot is
measured relative to V
CC
.
Absolute Maximum Undershoot and Pulse Duration of undershoot is measured relative to
V
SS
.
Ringback below V
CC
cannot be subtracted from overshoots/undershoots.
Lesser undershoot does not allocate longer or larger overshoot.
System designers are strongly encouraged to follow Intel’s layout guidelines.
All values specified by design characterization.
.
Table 22. Source Synchronous (400 MHz) AGTL+ Signal Group
Overshoot/Undershoot Tolerance
Absolute
Maximum
Overshoot (V)
Absolute
Maximum
Undershoot (V)
Pulse Duration
(ns) AF = 1
Pulse Duration (ns)
AF = 0.1
Pulse Duration (ns)
AF = 0.01
1.70 -0.40 0.42 4.18 5.00
1.65 -0.35 1.25 5.00 5.00
1.60 -0.30 3.66 5.00 5.00
1.55 -0.25 5.00 5.00 5.00
1.50 -0.20 5.00 5.00 5.00
1.45 -0.15 5.00 5.00 5.00
1.40 -0.10 5.00 5.00 5.00
1.35 -0.05 5.00 5.00 5.00
NOTES:
1. These specifications are measured at the processor pad.
2. Assumes a BCLK period of 10 ns.
3. AF is referenced to associated source synchronous strobes
Table 23. Source Synchronous (400 MHz) AGTL+ Signal Group
Overshoot/Undershoot Tolerance
Absolute
Maximum
Overshoot (V)
Absolute
Maximum
Undershoot (V)
Pulse Duration
(ns) AF = 1
Pulse Duration (ns)
AF = 0.1
Pulse Duration (ns)
AF = 0.01
1.70 -0.40 0.84 8.36 10.00
1.65 -0.35 2.50 10.00 10.00
1.60 -0.30 7.32 10.00 10.00
1.55 -0.25 10.00 10.00 10.00
1.50 -0.20 10.00 10.00 10.00
NOTES:
1. These specifications are measured at the processor pad.
2. Assumes a BCLK period of 10 ns.
3. AF is referenced to associated source synchronous strobes.
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