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X8DA6/X8DAE User's Manual
1-6
Power Supply
As with all computer products, a stable power source is necessary for proper and
reliable operation. It is even more important for processors that have high CPU
clock rates.
The X8DA6/X8DAE can accommodate 24-pin ATX power supplies. Although most
power supplies generally meet the specifications required by the CPU, some are
inadequate. In addition, the two onboard 12V 8-pin power connections are also
required to ensure adequate power supply to the system. Also your power supply
must supply 1.5A for the Ethernet ports.
Warning: To prevent damage to your power supply or motherboard, please use a
power supply that contains a 24-pin and two 8-pin power connectors. Be sure to con-
nect these power connectors to the 24-pin and the two 8-pin power connectors on your
motherboard for adequate power supply to your system. Failure to do so will void the
manufacturer warranty on your power supply and motherboard.
It is strongly recommended that you use a high quality power supply that meets ATX
power supply Specification 2.02 or above. It must also be SSI compliant (For more
information, please refer to the web site at http://www.ssiforum.org/). Additionally, in
areas where noisy power transmission is present, you may choose to install a line
filter to shield the computer from noise. It is recommended that you also install a
power surge protector to help avoid problems caused by power surges.
1-7
Super I/O
The disk drive adapter functions of the Super I/O chip include a floppy disk drive
controller that is compatible with industry standard 82077/765, a data separator,
write pre-compensation circuitry, decode logic, data rate selection, a clock genera-
tor, drive interface control logic and interrupt and DMA logic. The wide range of
functions integrated onto the Super I/O greatly reduces the number of components
required for interfacing with floppy disk drives. The Super I/O supports 360 K, 720
K, 1.2 M, 1.44 M or 2.88 M disk drives and data transfer rates of 250 Kb/s, 500 Kb/s
or 1 Mb/s. 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
and Power Interface), which includes support of legacy and ACPI power manage-
ment through an SMI or SCI function pin. It also features auto power management
to reduce power consumption.
1-12
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