參數(shù)資料
型號: 82C862
廠商: Electronic Theatre Controls, Inc.
英文描述: FireLink USB Dual Controller Quad Port USB
中文描述: FireLink雙控制器的USB四口USB
文件頁數(shù): 5/51頁
文件大?。?/td> 321K
代理商: 82C862
FireLink USB
82C862
912-2000-030
Revision: 1.0
Page 1
1.0 Features
Compliant with USB rev. 1.1 specification
Fully compatible with USB OHCI specification
Two independent host controllers, two ports each,
making FireLink USB a multi-function PCI device
Second host controller can be disabled if not used
Clock input can be derived from either a 12MHz crystal
or a 48MHz oscillator
Clocks can be turned off when not in use to save power
Core operates at 3.3V; PCI inputs are 5V-tolerant
Incorporates PCI Power Management, supporting very
low power standby modes
Implements CLKRUN# pin to support hardware-
enforced power-down
Packaged as 100-pin LQFP (Low-profile Quad Flat
Pack)
Supported by Windows 98, Windows 2000, and
Windows CE
2.0 Overview
This document describes the OPTi FireLink USB (82C862)
controller.
This PCI-to-USB bridge is unique in that it consists of two
independent dual-port controllers, each sharing only the
common PCI bus connection. This arrangement allows for
a total Universal Serial Bus bandwidth of 24Mb/s, divided
into 12Mb/s for each pair of ports.
Figure 1 provides a block diagram of the overall
functionality of the chip.
Figure 1.
82C862 FireLink USB Block Diagram
port 2
12MHz
xtal
USB
Controller
Module 1
FireLink
USB
82C862
PCI
interface
48MHz Clock
Generation
Central
Arbiter
USB Config
Regs Function 0
USB
Controller
Module 2
USB Config
Regs Function 1
port 1
port 4
port 3
REQ#, GNT#
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