Supermicro H8SCM-F User Manual download pdf (Page 20)

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H8SCM(-F) Serverboard User’s Manual

1-7 Super I/O

The disk drive adapter functions of the Super I/O Winbond® BMC chip includes 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

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 Conﬁ guration

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

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 H8SCM-F User Manual Page 20