VT82C686B
Revision 1.71 June 9, 2000
-3-
Features
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• Universal Serial Bus Controller
− USB v.1.1 and Intel Universal HCI v.1.1 compatible
− Eighteen level (doublewords) data FIFO with full scatter and gather capability
− Root hub and four function ports
− Integrated physical layer transceivers with optional over-current detection status on USB inputs
− Legacy keyboard and PS/2 mouse support
• System Management Bus Interface
− Host interface for processor communications
− Slave interface for external SMBus masters
• Sophisticated PC99-Compatible Mobile Power Management
− Supports both ACPI (Advanced Configuration and Power Interface) and legacy (APM) power management
− ACPI v1.0 Compliant
− APM v1.2 Compliant
− CPU clock throttling and clock stop control for complete ACPI C0 to C3 state support
− PCI bus clock run, Power Management Enable (PME) control, and PCI/CPU clock generator stop control
− Supports multiple system suspend types: power-on suspends with flexible CPU/PCI bus reset options,
suspend to DRAM, and suspend to disk (soft-off), all with hardware automatic wake-up
− Multiple suspend power plane controls and suspend status indicators
− One idle timer, one peripheral timer and one general purpose timer, plus 24/32-bit ACPI compliant timer
− Normal, doze, sleep, suspend and conserve modes
− Global and local device power control
− System event monitoring with two event classes
− Primary and secondary interrupt differentiation for individual channels
− Dedicated input pins for power and sleep buttons, external modem ring indicator, and notebook lid open/close for
system wake-up
− Up to 12 general purpose input ports and 23 output ports
− Multiple internal and external SMI sources for flexible power management models
− One programmable chip select and one microcontroller chip select
− Enhanced integrated real time clock (RTC) with date alarm, month alarm, and century field
− Thermal alarm on either external or any combination of three internal temperature sensing circuits
− Hot docking support
− I/O pad leakage control
• Plug and Play Controller
− PCI interrupts steerable to any interrupt channel
− Steerable interrupts for integrated peripheral controllers: USB, floppy, serial, parallel, audio, soundblaster, MIDI
− Steerable DMA channels for integrated floppy, parallel, and soundblaster pro controllers
− One additional steerable interrupt channel for on-board plug and play devices
− Microsoft Windows 98TM, Windows NTTM, Windows 95TM and plug and play BIOS compliant
• Integrated I/O APIC (Advanced Peripheral Interrupt Controller)
• Built-in NAND-tree pin scan test capability
• 0.35um, 3.3V, low power CMOS process
• Single chip 27x27 mm, 352 pin BGA
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