User Guide
Interfaces
46 Datasheet, Volume 1 of 2
memory throttling control mechanisms and many other services. PECI is used for
platform thermal management and real time control and configuration of processor
features and performance.
2.6.1 PECI Bus Architecture
The PECI architecture is based on a wired OR bus that the clients (as processor PECI)
can pull up (with strong drive).
The idle state on the bus is near zero.
The following figures demonstrates PECI design and connectivity:
• PECI Host-Clients Connection: While the host/originator can be third party PECI
host and one of the PECI client is a processor PECI device.
• PECI EC Connection.
Figure 2-9. Example for PECI Host-Clients Connection
V
TT
Host/Originator
Q1
nX
Q2
1X
PECI
C
PECI
<10pF/Node
Q3
nX
V
TT
PECIClient
Additional
PECIClients