VT82C686B
Revision 1.71 June 9, 2000
-1-
Features
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VT82C686B PSIPC
PCI SUPER-I/O INTEGRATED PERIPHERAL CONTROLLER
PC99 COMPLIANT PCI-TO-ISA BRIDGE
WITH
INTEGRATED SUPER-I/O (FDC, LPT, COM1/2, AND IR),
INTEGRATED HARDWARE SOUNDBLASTER/DIRECT SOUND AC97 AUDIO,
ULTRADMA-33/66/100 MASTER MODE PCI-EIDE CONTROLLER,
USB CONTROLLER, KEYBOARD CONTROLLER, RTC,
DISTRIBUTED DMA, SERIAL IRQ, PLUG AND PLAY,
ACPI, ENHANCED POWER MANAGEMENT, SMBUS, AND
TEMPERATURE, VOLTAGE, AND FAN-SPEED MONITORING
• Inter-operable with VIA and other Host-to-PCI Bridges
− Combine with VT82C598 for a complete Super-7 (66/75/83/100MHz) PCI / AGP / ISA system (Apollo MVP3)
− Combine with VT8501 for a complete Super-7 system with integrated 2D / 3D graphics (Apollo MVP4)
− Combine with VT82C693 for a complete 66 / 100 / 133 MHz Socket-370 or Slot-1 system (Apollo Pro133)
− Combine with VT8601 for a complete 66 / 100 / 133 MHz Socket-370 or Slot-1 system with integrated 2D / 3D
graphics (Apollo ProMedia)
− Inter-operable with Intel or other Host-to-PCI bridges for a complete PC99 compliant PCI / AGP / ISA system
• PCI to ISA Bridge
− Integrated ISA Bus Controller with integrated DMA, timer, and interrupt controller
− Integrated Keyboard Controller with PS2 mouse support
− Integrated DS12885-style Real Time Clock with extended 256 byte CMOS RAM and Day/Month Alarm for ACPI
− Integrated USB Controller with root hub and four function ports
− Integrated UltraDMA-33/66/100 master mode EIDE controller with enhanced PCI bus commands
− PCI-2.2 compliant with delay transaction and remote power management
− Eight double-word line buffer between PCI and ISA bus
− One level of PCI to ISA post-write buffer
− Supports type F DMA transfers
− Distributed DMA support for ISA legacy DMA across the PCI bus
− Serial interrupt for docking and non-docking applications
− Fast reset and Gate A20 operation
− Edge trigger or level sensitive interrupt
− Flash EPROM, 4Mb EPROM and combined BIOS support
− Supports positive and subtractive decoding
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