Specifications

Processor Presence and Population Check QSSC-S4R Technical Product Specification
260
24.2.5 Secure Mode and Front Panel Lock-out Operation
The front panel can be locked using the Set Front Panel Enables command. You can check the front panel lock-out
status using the Get chassis Status command.
24.3 Private Management I
2
C Buses
The BMC controls multiple private I
2
C buses. The BMC is the sole master on these buses. External agents must use
the BMC’s Master Write / Read command if they require direct communication with a device on any of these buses.
Only FRU devices are accessible in this manner. Sensor devices should not be directly accessed by BMC clients.
Table 175. List of I
2
C Buses
Bus Number Bus Name Description
0 (Public) IPMB HSBP Connectors, LCP Connector, Aux .IPMB Connector.
1 (Private) Sensor Bus Temperature Sensors, Baseboard FRU.
2 Private Unused N/A
3 (Private) Host Bus
4 (Private) SMLink ME, Power Supplies FRU
5 Private NICs, Fan Board FRU, SAS FRU, Front Panel Temp.
Below diagram represents SMBUS connections from BMC
Figure 106. SMBus Connections
24.4 Watchdog Timer
The BMC implements a fully IPMI 2.0-compatible watchdog timer. See the Intelligent Platform Management Interface
Specification Second Generation v2.0. The NMI / diagnostic interrupt for an IPMI 2.0 watchdog timer is associated with
an NMI. A watchdog pre-timeout SMI or equivalent signal assertion is not supported.