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VT82C586B
VT82C586B PIPC
PCI INTEGRATED PERIPHERAL CONTROLLER
PC97 COMPLIANT PCI-TO-ISA BRIDGE
WITH ACPI, DISTRIBUTED DMA, PLUG AND PLAY,
MASTER MODE PCI IDE CONTROLLER WITH ULTRADMA-33,
USB CONTROLLER, KEYBOARD CONTROLLER, AND REAL TIME CLOCK
• PC97 Compliant 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 two function ports
− Integrated master mode enhanced IDE controller with enhanced PCI bus commands and UltraDMA-33 extensions
− PCI-2.1 compliant with delay transaction
− 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
− Fast reset and Gate A20 operation
− Edge trigger or level sensitive interrupt
− Flash EPROM, 2MB EPROM and combined BIOS support
− Programmable ISA bus clock
− Supports external IOAPIC interface for symmetrical multiprocessor configurations
• Inter-operable with VIA and other Host-to-PCI Bridges
− Combine with VT82C585VPX/587VP for a complete 75MHz 6x86 / PCI / ISA system (Apollo VPX)
− Combine with VT82C595 for a complete Pentium / PCI / ISA system (Apollo VP2)
− Combine with VT82C685/687 for a complete Pentium-Pro /PCI / ISA system (Apollo P6)
− Combine with VIA Apollo-AGP and Apollo Pro chipsets for new high-performance / enhanced-functionality systems
− Inter-operable with other Intel or non-Intel Host-to-PCI bridges for a complete PC97 compliant PCI/ISA system
• Enhanced Master Mode PCI IDE Controller with Extension to UltraDMA-33
− Dual channel master mode PCI supporting four Enhanced IDE devices
− Transfer rate up to 33MB/sec to cover PIO mode 4, multi-word DMA mode 2 drives, and UltraDMA-33 interface
− Sixteen levels (doublewords) of prefetch and write buffers
− Interlaced commands between two channels
− Bus master programming interface for SFF-8038i rev.1.0 and Windows-95 compliant
− Full scatter gather capability
− Support ATAPI compliant devices including DVD devices
− Support PCI native and ATA compatibility modes
− Complete software driver support
Revision 1.0 May 13, 1997
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Features