
Platform Management ArchitectureIntel® Server Board SE7520BD2 Technical Product Specification
112
Revision
1.3
4.6.13.1
Power Management Event (PME)#
PME# signals from PCI-X slots on each PCI-X buses are connected to the PXH PME# signals.
These
PME# signals from both PCI-X buses are also ANDed and then wire-Ored with PCI Express
slots and then routed to a ICH GPIO. This GPI is “ACPI Compliant, (i.e. the Status and Enable
bits reside in ACPI I/O space). This is used to exit sleep states (S1-S5). PCI 32/33 PME signal
is connected to ICH PME signal.
4.6.13.2 RESET#
Control
The ICH always drives the PCI Reset signal (LOW or HIGH), even when the system is in a
sleep state. This is required for PCI power management. Any device that may be active will be
able to sample this signal to know that the system is in a reset condition.
4.6.13.3 PCI
Vaux
All PCI, PCI-X, and PCI Express slots are provided with 3.3V-aux. power to support wake
events from all sleep states. The EPS12V power supply will deliver 2A of 5VSB, which in turn is
regulated to 3.3VSB when the system is in S4 or S5 sleep state.
4.7 System
Status
Indicators/LEDs
The standard system status LEDs for PWR/SLP, HDD and other LEDs as specified in SSI EEB
are supported on the front panel header. A dual color LED can be used for the PWR/SLP LED
to distinguish between System Power On (Green) and System Sleep (Yellow). The PWR/SLP
LED signals are driven by the ICH and conditioned by logic on the baseboard before they are
sent to the front panel connector. The single HDD LED represents any hard drive activity in the
system whether from SCSI or IDE hard drives.
For 10/100 LAN, status LEDs are supported through the back panel 10/100 RJ45 Jack and the
front panel per SSI-EEB specification. The Green LED indicates the LAN speed at either
10Mbit/s (Off) or 100Mbit/s (On). The Yellow LED represents both Link Integrity (On – good, Off
– bad) as well as LAN activity (Blinking).
For 10/100/1000 LAN status LEDs are supported through the back panel 10/100/1000 RJ-45
Jack and the front panel per SSI-EEB specification. The dual color LED indicates the LAN
speed at 10Mbit/s (Off), 100Mbit/s (Green) or 1000 Mbit/s (Yellow). The Green Link LED
represents both Link Integrity (On – good, Off – bad) as well as LAN activity (Blinking).
4.7.1 Front
Panel
The front panel functionality/implementation is the same as that in the SSI-EEB 3.5
specification.
As such, it will have:
•
Five LEDs configured as:
11. Power/Sleep
12. Network Activity #1
13. Network Activity #2
14. Hard Drive Activity