Intel C2550 FH8065401488912 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

Datasheet, Vol. 2 of 3

September 2014

152

Order Number: 330061-002US

The SoC is a server-class component and provides dynamic power management that fit 

a number of usages like storage and networking. As the technology changes and the 

number of cores per node and per module changes, this places a requirement to find 

the best approach to manage the TDP power of the node/module with respect to the 

available power budget.

The power management control is comprised of a number of Intel

®

 proprietary 

mechanisms. The power management signal interface to the rest of the platform is 

through the Power Management Controller (PMC) block in the Platform Controller Unit 

(PCU). In some areas, this chapter refers to this distributed function as the SoC Power 

Management Unit (PMU).

An external, board-level Baseboard Management Controller (BMC) or some other 

embedded controller, is required to manage the platform power planes, power-on, 

sleep states, and reset signaling. This chapter refers to the BMC or Embedded 

Controller (EC). The EC interfaces with the SoC internal fabric to perform its 

management functions.

The SoC power management is responsible for the following tasks:

• Managing the internal power wells voltages
• Communicating with the EC
• Resetting sequencing
• Managing processor C-states
• Managing L2 cache dynamic sizing
• Managing Sleep-state entry sequences
• Managing DDR3 power management and RComp routines
• Controlling Low Pin Count (LPC) interface clock 
• Directing processor thermal management
• Interfacing with the BIOS and the operating system software
• Managing Intel

®

 Turbo Boost Technology and RAPL control

5.0

DEC 2011

, 

Revision 5.0

1.61

OCT 2011

, Revision 1.61

(Intel Document Number 397113)

VR12/IMVP7 

Protocol

1.5

AUG 2010

, Revision 1.5

(Intel Document Number 456098)