Rev D System Management Module 2 (SMM-2) 7-11
Functional Description
Figure 7.4
CHP Max Local
Management and
Monitoring
Communication Signals
USB between Command Line Interface
The Command Line Interface (CLI) used on a computer connected to the SMM-2 mini-USB
connector, sends requests for information to the SMM-2. The SMM-2 returns information
received from application modules back through the USB interface port for accessing
through the CLI.
Serial Peripheral Interface Bus
The SMM-2 sends the requests through the chassis SPI bus to the application modules and
power supplies. The polled modules return requested information and alarms through the
SPI bus to the SMM-2.
High Speed Bus (Not Used by All Modules)
The SMM-2 sends the requests through the chassis’ Ethernet High Speed Bus to the
application modules supporting high speed functionality. The polled modules return
requested information and alarms through the High Speed Bus to the SMM-2.
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