Intel netstructure mpcbl0001 用户手册
30
Technical Product Specification
Order #273817
Intel NetStructure
®
MPCBL0001 High Performance Single Board Computer
Contents
The IPMC provides six I
2
C bus connections. Two are used as the redundant IPMB bus connections
to the backplane while another one is used for communication with the ADM1026. The remaining
buses are unused. If an IPMB bus fault or IPMC failure occurs, IPMB isolators are used to switch
and isolate the backplane/system IPMB bus from the faulted SBC board. Where possible, the
IPMC activates the redundant IPMB bus to re-establish system management communication to
report the fault.
buses are unused. If an IPMB bus fault or IPMC failure occurs, IPMB isolators are used to switch
and isolate the backplane/system IPMB bus from the faulted SBC board. Where possible, the
IPMC activates the redundant IPMB bus to re-establish system management communication to
report the fault.
The onboard DC voltages are monitored by the ADM1026 device, manufactured by Analog
Devices. The IPMC queries the ADM1026 over a local system management I
Devices. The IPMC queries the ADM1026 over a local system management I
2
C bus. The
ADM1026 includes voltage threshold settings that can be configured to generate an interrupt to the
IPMC if any of the thresholds are exceeded.
IPMC if any of the thresholds are exceeded.
To increase the reliability of the MPCBL0001 SBC, a watchdog timer is implemented, whereby it
strobes an external watchdog timer at two-second intervals to ensure continuity of operation of the
board’s management subsystem. If the IPMC ceases to strobe the watchdog timer, the watchdog
timer isolates the IPMC from the IPMBs and resets the IPMC. The watchdog timer expires after six
seconds if strobes are not generated, and it resets the IPMC. Detailed information on the watchdog
timer configuration can be queried using standard IPMI v1.5 watchdog timer commands. The
watchdog timer does not reset the payload power.
strobes an external watchdog timer at two-second intervals to ensure continuity of operation of the
board’s management subsystem. If the IPMC ceases to strobe the watchdog timer, the watchdog
timer isolates the IPMC from the IPMBs and resets the IPMC. The watchdog timer expires after six
seconds if strobes are not generated, and it resets the IPMC. Detailed information on the watchdog
timer configuration can be queried using standard IPMI v1.5 watchdog timer commands. The
watchdog timer does not reset the payload power.
3.1
Sensor Data Record (SDR)
Sensor Data Records contain information about the type and number of sensors in the baseboard,
sensor threshold support, event generation capabilities, and the types of sensor readings handled by
system management firmware.
sensor threshold support, event generation capabilities, and the types of sensor readings handled by
system management firmware.
The MPCBL0001 management controller is set up as a satellite management controller (SMC). It
does support sensor devices, whose population is static by nature. SDRs can be queried using
Device SDR commands to the firmware. Refer to
does support sensor devices, whose population is static by nature. SDRs can be queried using
Device SDR commands to the firmware. Refer to
for the list of supported IPMI commands for SDRs. Hardware
sensors that have been implemented are listed below.
Table 2.
Hardware Sensors (Sheet 1 of 3)
Sensor
Number
Sensor Type
Voltage/Signals
Monitored
Monitored
via
Scanning
Enabled
under Power
State
Health LED
(Green to Red)
01h
Power Unit
Payload Power
IPMC
Power On
Soft power control
failure (Offset Bit 05h
asserted
failure (Offset Bit 05h
asserted
03h
Watchdog Timer
IPMC Watchdog
Timer timeout
Timer timeout
IPMC
Power On/
Off
Off
No change
06h
System Firmware
Progress
Progress
IPMC
Power On
No change
07h
CPU Critical
Interrupt
Interrupt
PCI SERR
IPMC
Power On
PCI SERR signal
asserted
asserted
PCI PERR
IPMC
Power On
PCI PERR signal
asserted
asserted
08h
Memory Error
ECC Multiple Bit
error
error
IPMC
Power On
Multiple Bit Error or
Uncorrectable ECC
occurred
Uncorrectable ECC
occurred
ECC Single Bit error IPMC
Power On
No change