Intel C2518 FH8065501516710 Data Sheet

Intel

®

 Atom™ Processor C2000 Product Family for Microserver

September 2014

Datasheet, Vol. 2 of 3

Order Number: 330061-002US

377

The Platform Environment Control Interface (PECI) was developed to replace I

2

C as the 

methodology of reading CPU temperatures. The PECI specification has evolved 

overtime to provide a broader management interface to manage the platform. The 

current PECI specification is RS - Platform Environment Control Interface (PECI) 

Specification, Revision 3.0. In non-SoC environments, the PECI slave interface is 

implemented in the CPU complex, while the master interface is in the Platform Control 

Hub (PCH) and/or Base Board Management Controller (BMC). The PECI implementation 

only allows a single master on the bus.

On the SoC platform, the BMC acts as a PECI master and the SoC SMBus-for-PECI 

controller described in this chapter acts as a slave PECI proxy controller. The PECI 

commands are encapsulated within SMBus packets sent to the SoC. Additional, new 

PECI commands have been defined for the SoC, specific to its architecture.

SMBus

2.0

August 3, 2000

 Version 2.0

PECI 3.0

Specification 

31631

3.0

Mar. 15, 2012

Revision 3.0

I

O

SMBus2

PECI

I

O