Themis RES-12XR3-S, Installation Manual

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Overview and Specifications
Super I/O
1-11
Themis Computer
matically turn on and off peripherals such as CD-ROMs, network cards, storage
drives and printers.
In addition to enabling operating system-directed power management, ACPI pro-
vides a generic system event mechanism for Plug and Play and an operating system-
independent interface for configuration control. ACPI leverages the Plug and Play
BIOS data structures while providing a processor architecture-independent imple-
mentation that is compatible with Windows XP, Windows 2003 and Windows 2008
and Windows Vista Operating Systems.
1.6.1 Slow Blinking LED for Suspend-State Indicator
When the CPU goes into a suspend state, the chassis power LED will start blinking
to indicate that the CPU is in suspend mode. When the user presses any key, the CPU
will wake-up and the LED will automatically stop blinking and remain on.
1.6.2 Main Switch Override Mechanism
When an ATX power supply is used, the power button can function as a system sus-
pend button to make the system enter a SoftOff state. The monitor will be suspended
and the hard drive will spin down. Pressing the power button again will cause the
whole system to wake-up. During the SoftOff state, the ATX power supply provides
power to keep the required circuitry in the system “alive.” In case the system mal-
functions and you want to turn off the power, just press and hold the power button
for 4 seconds. This option can be set in the Power section of the BIOS Setup routine.
1.7 Super I/O
The wide range of functions integrated onto the Super I/O greatly reduces the num-
ber of components required for interfacing with floppy disk drives. It also provides
two high-speed, 16550 compatible serial communication ports (UARTs). Each
UART includes a 16-byte send/receive FIFO, a programmable baud rate generator,
complete modem control capability and a processor interrupt system. Both UARTs
provide legacy speed with baud rate of up to 115.2 Kbps as well as an advanced
speed with baud rates of 250 K, 500 K, or 1 Mb/s, which support higher speed
modems.
The Super I/O provides functions that comply with ACPI (Advanced Configuration