Справочник Пользователя для Intel E7-8891 v2 CM8063601377422
Модели
CM8063601377422
PCU Functional Description
66
Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
10.2
Platform Environment Control Interface (PECI)
The Platform Environment Control Interface (PECI) uses a single wire for self-clocking
and data transfer. The bus requires no additional control lines. PECI also includes
variable data transfer rate established with every message. In this way, it is highly
flexible even though underlying logic is simple.
and data transfer. The bus requires no additional control lines. PECI also includes
variable data transfer rate established with every message. In this way, it is highly
flexible even though underlying logic is simple.
The PECI bus offers:
• A wide speed range from 2 Kbps to 2 Mbps
• CRC check byte used to efficiently and automatically confirm accurate data delivery
• Synchronization at the beginning of every message minimizes device timing
• CRC check byte used to efficiently and automatically confirm accurate data delivery
• Synchronization at the beginning of every message minimizes device timing
accuracy requirements
Note:
The PECI commands described in this document apply primarily to the processor E7 v2
product family.
10.2.1
PECI Client Capabilities
The processor PECI client is designed to support the following sideband functions:
• Processor, Memory Buffer and DRAM thermal management
• Platform manageability functions including thermal, power, and error monitoring
• Platform manageability functions including thermal, power, and error monitoring
Figure 10-1. Power and Thermal Management Architecture Overview