Supermicro P4SC8 User Manual download pdf (Page 18)

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SUPER P4SC8/P4SCi User’s Manual

The SUPER P4SC8/P4SCi accommodates 12V ATX power supplies. Al-

though most power supplies generally meet the specifications required by

the CPU, some are inadequate. You power supply must supply 1 amp of 5V

standby voltage.

It is strongly recommended that you use a high quality power supply that

meets 12V ATX power supply Specification 1.1 or above. Additionally, in

areas where noisy power transmission is present, you may choose to in-

stall 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.

1-6 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 selec-

tion, 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 floppy disk

drives. The Super I/O supports four 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 one high-speed, 16550 compatible serial communication port

(UART), which supports serial infrared communication. The UART includes

a 16-byte send/receive FIFO, a programmable baud rate generator, com-

plete modem control capability and a processor interrupt system. The UART

provides 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 sup-

ports higher speed modems.

The Super I/O provides functions that comply with Advanced Configuration

and Power Interface (ACPI), which includes support of legacy and ACPI

power management. 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 flexibly

adjusted to meet ISA PnP requirements, which support ACPI and Advanced

Power Management (APM).

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Supermicro P4SC8 User Manual Page 18