Technical Product Specification

Platform Management Functional Overview Intel® Server Board S1600JP TPS
The following terminology is used for the various memory throttling options:
 Static Open Loop Thermal Throttling (Static-OLTT):
OLTT control registers are
configured by BIOS MRC remain fixed after post. The system does not change any of
the throttling control registers in the embedded memory controller during runtime.
 Static Closed Loop Thermal Throttling (Static-CLTT):
CLTT control registers are
configured by BIOS MRC during POST. The memory throttling is run as a closed-loop
system with the DIMM temperature sensors as the control input. Otherwise, the system
does not change any of the throttling control registers in the embedded memory
controller during runtime.
 Dynamic Open Loop Thermal Throttling (Dynamic-OLTT): OLTT control registers are
configured by BIOS MRC during POST. Adjustments are made to the throttling during
runtime based on changes in system cooling (fan speed).
 Dynamic Closed Loop Thermal Throttling (Dynamic-CLTT): CLTT control registers
are configured by BIOS MRC during POST. The memory throttling is run as a closed-
loop system with the DIMM temperature sensors as the control input. Adjustments are
made to the throttling during runtime based on changes in system cooling (fan speed).
4.12.7.1
Fan Speed Control Profiles
BIOS and BMC software work cooperatively to implement system thermal management support.
During normal system operation, the BMC will retrieve information from the BIOS and monitor
several platform thermal sensors to determine the required fan speeds.
In order to provide the proper fan speed control for a given system configuration, the BMC must
have the appropriate platform data programmed. Platform configuration data is programmed
using the FRUSDR utility during the system integration process and by System BIOS during
run time.
Table 21. Fab Profile Mapping
Type
Profile
Details
OLTT
0
Acoustic, 300M altitude
OLTT
1
Performance, 300M altitude
OLTT
2
Acoustic, 900M altitude
OLTT
3
Performance, 900M altitude
OLTT
4
Acoustic, 1500M altitude
OLTT
5
Performance, 1500M altitude
OLTT
6
Acoustic, 3000M altitude
OLTT
7
Performance, 3000M altitude
CLTT
0
300M altitude
CLTT
2
900M altitude
CLTT
4
1500M altitude
CLTT
6
3000M altitude
4.12.7.2
System Configuration using FRUSDR Utility
The Field Replaceable Unit and Sensor Data Record Update Utility (FRUSDR utility) is a
program used to write platform-specific configuration data to NVRAM on the server board. It
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