Intel® Server System S7000FC4UR TPS BMC Functional Specifications
Revision 1.0
261
Note 1: Support for upper non-critical is not provided in default SDR configuration. If a user enables this threshold in
the SDR, then the system status LED behaves as described.
22.6.3 Chassis ID LED
The chassis ID LED provides a visual indication of a system being serviced. The state of the
chassis ID LED is affected by three things:
It is toggled by the chassis ID button
It can be controlled by the Chassis Identify command (IPMI)
It can be controlled by the Chassis Identify LED command (OEM)
Table 99. Chassis ID LED Indicator States
State LED State
Identify active via button Solid on
Identify active via command ~1 Hz blink
Off Off
There is no precedence or lock-out mechanism for the control sources. When a new request
arrives, previous requests are terminated. Example: If the chassis ID LED is blinking and the
chassis ID button is pressed, then the chassis ID LED changes to solid on. If the button is
pressed again, then the chassis ID LED turns off.
Chassis ID led will maintain the state after system reset, power on/off but not on AC
cycle.
Chassis ID led will be on in Firmware transfer mode and cannot be changed.
22.6.4 Front Panel / Chassis Inputs
The BMC monitors the front panel buttons and other chassis signals. The front panel input
buttons are momentary contact switches that are de-bounced by the BMC. The de-bounce time
is 50 ms; the signal must be in a constant low state for 50 ms before it is treated as asserted.
BMC debouncing does not affect the operation of the power or reset button, since the power
and reset buttons are connected to the chipset. The debouncing is only for BMC monitoring.
22.6.4.1 Chassis Intrusion
Chassis intrusion detection is supported. The BMC monitors the state of the Chassis Intrusion
signal and makes the status of the signal available via the Get Chassis Status command and
the Physical Security sensor state. A chassis intrusion state change causes the BMC to
generate a Physical Security sensor event message with a General Chassis Intrusion offset
(00h).
The BMC boosts all fans when the chassis intrusion signal is active. Fans return to their
previous level when the chassis intrusion signal is no longer active. This provides sufficient
cooling during system servicing. The BMC monitors the chassis intrusion cable. If the cable is
missing, the BMC logs a SEL event and sets the chassis intrusion status to the init-in-progress
state.
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