Supermicro H8DMT+ User Manual download pdf (Page 18)

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H8DMT+/H8DMT-INF+ 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 H8DMT+/H8DMT-INF+ requires the use of proprietary power supplies. Please

refer to the pinout information for the power connectors in Section 6 of Chapter 2

for detailed information on power requirements.

In areas where noisy power transmission is present, you may choose to install a

line ﬁ lter 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.

Warning: To prevent the possibility of explosion, do not use the wrong type of

onboard CMOS battery or install it upside down.

1-7 Super I/O

The disk drive adapter functions of the Super I/O chip include a ﬂ oppy 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 generator,

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 ﬂ oppy disk drives.

The Super I/O provides two high-speed, 16550 compatible serial communication

ports (UARTs), one of which supports serial infrared communication. Each UART in-

cludes 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 supports one PC-compatible printer port (SPP), Bi-directional Printer

Port (BPP) , Enhanced Parallel Port (EPP) or Extended Capabilities Port (ECP).

The Super I/O provides functions that comply with ACPI (Advanced Conﬁ guration

and Power Interface), which includes support of legacy and ACPI power manage-

ment through a SMI or SCI function pin. It also features auto power management

to reduce power consumption.

The IRQs, DMAs and I/O space resources of the Super I/O can be ﬂ exibly adjusted

to meet ISA PnP requirements, which support ACPI and APM (Advanced Power

Management).

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Supermicro H8DMT+ User Manual Page 18