Technical data

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Chapter 7: Using the System Controller
• Provides ability to request the system serial number and configuration information
via the I2C Interface.
• Eight-digit alphanumeric status display. This display is updated by the System
Controller or the Node cards in the system via the I2C interface.
• Provides a seven-wire 9600 bps alternate console diagnostic port for off-line
configuration and troubleshooting. Also communicates with the Node board(s)
when the IO console port or a system console is not available or functional. This
interface also supports the minimum requirements for modem support.
• Software Reset, NMI, and soft power-off commands through the alternate console
diagnostic port.
• Supports alternate console diagnostic port command line power supply voltage
margining. Margining allows the 3.45-V or 5-V outputs of the power supply to be
moved 5% higher or lower independently. This does not effect remote regulated
termination voltages (1.6 V, 2.4 V, router 3.3 V).
• Supports alternate console diagnostic port command-line regulated termination
voltage margining for the termination voltages 1.6 V, 2.4 V, and 3.3 V, (all
termination voltages will be margined 5% higher or lower together, not
independently). This does not affect the power supply voltages.
• Sends early warning high priority interrupt (Panic Interrupt) to all Node boards
warning of impending shutdown due to AC power fail, ambient over-temperature
or the switch being placed in the standby position.
• Provides an interlock (removable keyswitch) to prevent unauthorized personnel
from turning the system to on or standby, and to limit operation of the System Reset
and NMI functions. The software password allows access and permissions through
the alternate diagnostic console port.