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9 i/o interface controller – SOYO SY-K7VTA PRO User Manual

Page 19

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Motherboard Description

SY-K7VTA PRO

15

level triggered interrupts channel by channel. The integrated DMA
controller supports type F DMA in addition to standard ISA DMA modes.
Compliant with the PCI2.2 specification, the VT83C686A supports
delayed transactions and remote power management so that slower ISA
peripherals do not block the traffic of the PCI bus. Special circuitry is built
in to allow concurrent operation without causing dead lock even in a
PCI-to PCI bridge environment. The chip also includes eight levels
(doublewords) of line buffers from the PCI bus to the ISA bus to further
enhance overall system performance.

1-9 I/O INTERFACE CONTROLLER

The motherboard uses the VT82C686B Super-I/O controller which
features:

Supports 2 serial ports, IR port, parallel port, and floppy disk

controller functions

Two UARTs for Complete Serial Ports

 Even, odd, stick or no parity bit generation and detection
 Programmable baud rate generator
 High speed baud rate (230Kbps, 460Kbps) support
 Independent transmit/receiver FIFOs
 Modem Control
 Plug and play with 96 base IO address and 12 IRQ options

One dedicated IR port

 Third serial port dedicated to IR function
 IR function either through the two complete serial ports or the

third dedicated port

 Infrared-IrDA (HPSIR) and ASK (Amplitude Shift Keyed) IR

Multi-mode parallel port

 Standard mode, ECP and EPP support
 Plug and play with 192 base IO address, 12 IRQ and 4 DMA

options

Floppy Disk Controller

 16bytes of FIFO