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EPC-3221 CompactPCI
System Controller Board and C1XTN02 Transition I/O Module
®
Baseboard Management Controller
Located on the EPC-3221 SCB, the Baseboard Management Controller (BMC) provides
platform management services for the EPC-3321. This BMC is responsible for monitoring
local environmental sensors and for generating platform events when sensor readings cross
programmable thresholds.
The BMC supports two interfaces for communicating with system software and other
intelligent devices:
• System management (SM) software running on a RadiSys EPC-3321 can access the
instrumentation through the Baseboard Management Controller. The BMC interfaces with
the onboard CPU using a Keyboard Controller-Style (KCS) interface. The KCS interface
acts as a gateway between System Management Software (SMS) and the BMC or other
intelligent devices located on the IPMB.
• The BMC also contains an interface to the Intelligent Platform Management Bus (IPMB)
to allow other intelligent devices to communicate with the BMC.
NOTE: For additional information on platform management, see this Web site:
http://www.radisys.com/service_support/
This site has the documentation for current and discontinued products in Adobe Acrobat
Portable Document Format (.PDF). Documentation may be read and printed using the free
Acrobat Reader software.
Sensor Devices
The BMC on the EPC-3321 is responsible for monitoring 16 sensors. Ten sensors monitor
environmental values on the CPU board and six sensors are digital sensors monitoring
backplane signals.
Six programmable thresholds are associated with each threshold sensor, as follows:
• Low non-critical
• Low critical
• Low non-recoverable
• High non-critical
• High critical
• High non-recoverable
Also, two programmable hysteresis values are associated with each threshold sensor —
positive and negative. The BMC monitors the sensors and generates a platform event when
one or more programmable thresholds are crossed.
Table 1
describes the 16 sensors on the EPC-3221 SCB.
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Service Manual
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