Introduction
WEB-6580
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R1.0
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User’s Manual 1-6
1.3 System Architecture
The following illustration of block diagram will show you how WEB-6580
SERIES give you a highly integrated system solution. The most up-to-date system
architecture of WEB-6580 SERIES, includes two main VLSI chips, VT8606 North
Bridge and VT82C686B South Bridge, to support VIA EDEN/EZRA processor,
SDRAM with non ECC, PCI bus interface, ACPI compliant power management,
USB port, SMBus communication, and Ultra ATA/33/66/100 IDE Bus Master. The
VT82C686B South Bridge will support PS/2 Keyboard/Mouse, two UARTs, FDC,
Parallel and Infrared interface. Besides, VGA is integrated in VT8606 North Bridge.
Ethernet device will provide user more flexibility and reliability in a highly
integrated application.
WEB-6580 SERIES are built-in VIA C3 EDEN or EZRA processors for high
performance and cost-effective application. The North Bridge VT8606 provides a
completely integrated solution for the system controller and data path components
in a processor system. The South Bridge, VT82C686B, provides PCI-to-ISA bridge
solution for the best industry application. It supports Ultra ATA 33/66/100 IDE
master interface, full Plug-and-Play compatibility, and Advanced Programmable
Interrupt Controller (APIC) interface on WEB-6580 SERIES. It also supports
2-port Universal Serial Bus (USB), PCI 2.1 Compliance operation and internal
Real-time Clock (RTC) to maintain date and time of a system.
The South Bridge VT82C686B, which integrates two high-speed serial ports,
one parallel port, IrDA interface, 8042 keyboard controller with PS/2 mouse ports
and FDD interface. This parallel port supports one PC-compatible printer port
(SPP), Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP).Beside,
it offer H/W monitor function and one Smart Card Reader interface.
VT82C686B standard 16-bit ISA bus slot is applied for all of slower I/O
operations. In WEB-6580 SERIES, it contains Watch-dog Timer (WDT) enabled
by jumper setting and trigger by software. The on-board AGP device, graphics
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