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Signal Descriptions
126 Intel® Xeon® Processor E5-1600 v2/E5-2600 v2 Product Families
Datasheet Volume One of Two
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VSA
Variable power supply for the processor system agent units. These
include logic (non-I/O) for the integrated I/O controller, the
integrated memory controller (iMC), the Intel® QPI agent, and the
Power Control Unit (PCU). The output voltage of this supply is
selected by the processor, using the serial voltage ID (SVID) bus.
Note: VSA has a Vboot setting of 0.9V. Refer to the compatible
VR12.0 PWM controller.
VSS Processor ground node.
VTTA
VTTD
Combined fixed analog and digital power supply for I/O sections of
the processor Intel QPI interface, Direct Media Interface Gen 2
(DMI2) interface, and PCI Express* interface. These signals will
also be referred to as VTT.
Table 6-16. Power and Ground Signals (Sheet 2 of 2)
Signal Name Description