Chapter 1: Introduction
1-19
Introduction
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 selection, a clock gen-
erator, 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 compo-
nents 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 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 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 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 manage-
ment to reduce power consumption.
The IRQs, DMAs and I/O space resources of the Super I/O can flexibly adjust to
meet ISA PnP requirements, which suppport ACPI and APM (Advanced Power
Management).
Содержание SUPER P6SWA
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