Platform Management ArchitectureIntel® Server Board SE7520BD2 Technical Product Specification
86 Revision 1.3
Figure 12. External Interfaces to mBMC
4.2.4.1 Private Management I
2
C Buses
The mBMC implements a single private management bus. The mBMC is the sole master on this
bus. External agents must use the mBMC Master Write/Read I
2
C command if they require direct
communication with a device on this bus. In addition, the mBMC provides a Reserve Device
command that gives an external agent exclusive access to a specific device for a selectable
time.
4.2.5 Messaging Interfaces
This section describes the supported mBMC communication interfaces:
• Host SMS interface via SMBus interface
• LAN interface using the LAN On Motherboard SMBus
PCI
SMBus
SMBus
Sensor
Devices
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