Control Panel Indicators; Table 49: Ssi Power Led Operation - Intel SE7520JR2 Technical Manual

Platform Management
•
Combined power and reset button assertion
If DC power is off, an assertion of the PWBTIN while the RSTIN is asserted generates
an OEM-specific Control Panel event to PEF. The event attributes are: Sensor Type
code - 14h (Button) and Sensor Specific offset - 07h. This PEF action initiates a BIOS
CMOS clear request to the system BIOS.
The user interface of the control panel consists of the following indicators:
• Power LED
• Fault/Status LED
• Chassis ID LED
For user input, the standard control panel can provide the following buttons/switches:
• Reset button
• Power button
• NMI/SDI button
• Chassis ID button
• Chassis intrusion switch (optional)
5.3.5.4

Control Panel Indicators

The mBMC is capable of supporting three control panel indicators: Power LED, Fault/Status
LED, and Chassis ID LED. The states of these indicators and how they relate to the
mBMC/chassis state are detailed below.
5.3.5.4.1 Power LED
The BIOS controls the control panel Power LED as described in the table below.
State Power Mode
Power Off Non-ACPI
Power On Non-ACPI
128

Table 49: SSI Power LED Operation

LED
OFF System power is off, and the BIOS has not initialized the chipset.
ON System power is on, but the BIOS has not yet initialized the chipset.
C78844-002
Intel® Server Board SE7520JR2
Description
Revision 1.0