92
Temperature sensors
The XE–900 has two onboard temperature sensors. One is located in the middle of
the board and measures the ambient temperature of the board. The other is located
next to the CPU and monitors the CPU temperature.
Accessing CPU fan speed and temperature sensor registers is accomplished
through operating system drivers. Contact Octagon Systems for driver availability
and/or a Board Support Package for your Operating System (OS).
Power management
The XE–900 supports ACPI 2.0 and PCI Power Management Specification 1.2.
Refer to the specifications for information on how to use these functions.
ACPI 2.0
The XE–900 system hardware and BIOS support ACPI 2.0 for resource allocation,
and power management states S0 and S1. This function is enabled in BIOS Setup.
PCI power management
The XE–900 supports PCI Power Management Specification 1.2. States B0 and B1
are always available. State B2 is not available when a PC/104
-Plus
(PCI) expansion
card is used. State B2 cannot be used with PC/104
-Plus
specification 1.2, as
necessary signals are not supported on the physical connector. This state will be
automatically disabled by the system BIOS when a PC/104
-Plus
expansion card is
detected by the PCI BIOS; no user adjustment is required.
LEDs
The XE–900 has three on-board LEDs, in addition to the LEDs on the Ethernet
connector. See page 19 for the location of the LEDs.
CR1 contains an amber and a green LED. The amber is an activity indicator for the
CompactFlash. The green is an activity indicator for the secondary IDE drive
devices (hard drive, CD ROM, etc.)
CR2 is a power on LED. This indicates the system is powered.
CR6 is a bicolor User LED. The amber LED is connected to GPO22, and the green
LED is connected to GPO23. CR6 is also used by the BIOS during booting to
indicate the status of the boot process (see page 95).
Summary of Contents for XE-900
Page 19: ...19 Figure 2 1 XE 900 SBC component diagram top ...
Page 20: ...20 Figure 2 2 XE 900 SBC component diagram bottom ...
Page 21: ...21 Figure 2 3 XE 900 SBC dimensions without Integrated Conductive Cooling System ...
Page 38: ...38 ...
Page 91: ...91 Figure 15 2 Dimensions for the Integrated Conductive Cooling System ...