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Issue No. 14

PCI 6140 Key Features

♦

♦

200mW Power Consumption

♦

Small Footprint PQFP-128

Package

♦

Lead Free Available

♦

Low Latency

Other Important Features

♦

3.3V signaling, including 5V

input signal tolerance

♦

Hot swap friendly

♦

Zero wait state burst

♦

Optional Zero clock latency

when bursting data across PCI

6140 to preserve maximum data

rate

♦

PCI compatible cycle completion

without PCI Retry penalty of a

traditional PCI bridge Legacy

VGA and Audio IO address

support

♦

Provides arbitration support for 4

bus

masters

on

secondary

interface

♦

Supports PCI Type 1 to Type 0

and

Type

1

configuration

command conversion

♦

Supports 1-Clock Latency Mode

Application:

USB/Firewire/Ethernet PCI Combo Card

PLX Product:

PCI 6140 – 32-bit FastLane PCI Bridge

Key Benefit:

Add-in Card Refreshes Legacy PCs

Low Cost FastLane Bridge Simplifies Connectivity

Upgrade

How many legacy PCs become useless

simply because they lack up-to-date I/O

connectivity? Sometimes all it takes to

bring new life to an old PC is to add

U S B 2 . 0 , F i r e w i r e o r E t h e r n e t

connectivity. This is easily accomplished

with a PCI Combo Card. A single add-

in card can have several I/O devices; but

they all

c a n ’ t

connect directly to the system PCI bus,

so some kind of bridge is required. A

c l a s s i c e x a m p l e i s t h e U S B

2.0/Firewire/Ethernet combo card shown

here. These low-end PCs and their add-

in cards are usually quite cost-sensitive,

and the standard PCI-to-PCI Bridge

from Intel adds too much to the BOM cost.

The Solution: Low-Cost Load Expansion with the

PCI 6140

On these PCI combo cards, there are normally two to four PCI devices

behind the bridge on the card. These PCI devices include USB, Firewire,

and Ethernet I/O chips as in this example; other combo cards include

RS 232, MIDI, SPDIF, TV Tuners, MPEG Decoders and Encoders,

Audio Processors, and other multimedia devices. The PCI Specification

allows each PCI slot only one device load. In order for multiple devices

to reside on the card, the PCI 6140 provides the lowest-cost isolated PCI

bus on its secondary. This bus can handle up to four PCI devices at

33MHz.