Introduction
ROBO-603 User’s Manual
1-8
1.4.5 VIA
VT82C686A
The VT82C686A PSIPC (PCI Super-I/O Integrated Peripheral Controller) is a high integration,
high performance, power-efficient, and high compatibility device that supports Intel and non-Intel
based processor to PCI bus bridge functionality to make a complete Microsoft PC99-compliant
PCI/ISA system. In addition to complete ISA extension bus functionality, the VT82C686A includes
standard intelligent peripheral controllers:
Two 16550-compatible serial I/O ports with infrared communications port option on the
second port.
LPT. Support for SPP, EPP and ECP modes.
Standard floppy disk drive interface.
Keyboard controller with PS2 mouse support.
Real Time Clock with 256 byte extended CMOS. In addition to the standard ISA RTC
functionality, the integrated RTC also includes the date alarm, century field, and other
enhancements for compatibility with the ACPI standard.
Notebook-class power management functionality compliant with ACPI and legacy APM
requirements. Multiple sleep states (power-on suspend, suspend-to-DRAM, and
suspend-to-Disk) are supported with hardware automatic wake-up. Additional
functionality includes event monitoring, CPU clock throttling and stop (Intel processor
protocol), PCI bus clock stop control, modular power, clock and leakage control,
hardware-based and software-based event handling, general purpose I/O, chip select and
external SMI.
Full System Management Bus (SMBus) interface.
Integrated PCI-mastering dual full-duplex direct-sound AC97-link-compatible sound system.
Hardware soundblaster-pro and hardware-assisted FM blocks are included for Windows
DOS box and real-mode DOS compatibility. Loopback capability is also implemented for
directing mixed audio streams into USB and 1394 speakers for high quality digital audio.
Plug and Play controller that allows complete steerability of all PCI interrupts and internal
interrupts / DMA channels to any interrupt channel. One additional steerable interrupt
channel is provided to allow plug and play and reconfigurability of on-board peripherals
for Windows family compliance.
Internal I/O APIC (Advanced Programmable Interrupt Controller).
