Supero SUPERO X7SBi-LN4, User Manual

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X7SBi-LN4/X7SBi-LN4-TM User’s Manual
1-12
1-6 Super I/O
The disk drive adapter functions of the Super I/O chip include 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 Super I/O supports
two 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 sys-
tem. 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 the ACPI (Advanced Configura -
tion and Power Interface), which includes support of legacy and ACPI power man-
agement through a SMI or SCI function pin. It also features auto power management
to reduce power consumption.