Technical Product Specification

Intel
®
Server Board S2400EP TPS Platform Management Functional Overview
Revision 2.0 Intel order number G50763-002
65
 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).
Both Static and Dynamic CLTT modes implement a Hybrid Closed Loop Thermal Throttling
mechanism whereby the Integrated Memory Controller estimates the DRAM temperature in
between actual reads of the memory thermal sensors.
6.9 Messaging Interfaces
The BMC supports the following communications interfaces:
 Host SMS interface by means of low pin count (LPC)/keyboard controller style (KCS)
interface
 Host SMM interface by means of low pin count (LPC)/keyboard controller style (KCS)
interface
 Intelligent Platform Management Bus (IPMB) I2C interface
 LAN interface using the IPMI-over-LAN protocols
Every messaging interface is assigned an IPMI channel ID by IPMI 2.0. The following tables
shows the standard channel assignments.
Table 17. Messaging Interfaces
Channel ID
Interface
Supports
Sessions
0
Primary IPMB
No
1
LAN 1
Yes
2
LAN 2
Yes
3
LAN3
1
(Provided by the Intel
®
Dedicated Server Management NIC)
Yes
4
Reserved
Yes
5
USB
No
6
Secondary IPMB
No
7
SMM
No
8– 0Dh
Reserved
–
0Eh
Self
2
–
0Fh
SMS/Receive Message Queue
No
Notes:
1. Optional hardware supported by the server system.
2. Refers to the actual channel used to send the request.
6.9.1 User Model
The BMC supports the IPMI 2.0 user model. 15 user IDs are supported. These 15 users can be
assigned to any channel. The following restrictions are placed on user-related operations:
1. User names for User IDs 1 and 2 cannot be changed. These are always “” (Null/blank)
and “root” respectively.