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Version 1.4 2005
NET2282
Features
Overview
o
PCI v3.0 鈥?66MHz, 32-bit Bus
o
Hi-Speed USB 2.0 Peripheral Port
o
Integrated 8051 CPU @ 30 MHz
o
32K of shared Random Access
Memory accessible from the USB
Host and the PCI Bus
o
Descriptor-based DMA Controllers
(4) for automatic data transfers
o
Low Power 0.18u process ideal for
USB Bus Powered Operation
o
Lead Free Packaging
o
14x14mm, 120-Pin QFP Package
Conventional PCI Interface
o
PCI v3.0 - 66MHz, 32-bit PCI Bus
o
3.3V interface with 5V tolerance for
compatibility with both 3.3 and 5V
PCI systems
o
Plug into existing PCI based systems
to instantly add a High Speed USB
2.0 Device Port
o
PCI Host Option for simple PCI
Adapter to USB Peripheral
Conversions
o
Straightforward PC Card to
ExpressCard
TM
Conversions
o
Mastering PCI Interface
o
Optional PCI Arbiter included
Hi-Speed USB 2.0 Interface
o
USB 2.0 Peripheral Interface
o
Hi-Speed USB with Sustained
Bandwidth of up to 40MBytes/sec (at
480 Mbps bursts)
o
Backwards compatible to Full Speed
USB connections
o
Utilize up to 30 Independent USB
Endpoints using Dynamic Virtual
Endpoint Technology
TM
o
USB Auto-Enumeration Technology
o
Support for Bulk, Isochronous, and
Interrupt Endpoints
o
Integrated PHY
PCI to USB 2.0 Hi-Speed Peripheral Controller
Simplified Hardware Design
PLX Technology鈥檚 NET2282 PCI to Hi-Speed USB 2.0 Peripheral Controller is
designed for easy integration with existing PCI based systems and silicon. While
there are many PCI-based USB hosts on the market, the NET2282 is one of the only
PCI-based USB peripheral controllers available. With the NET2282, adding a Hi-
Speed USB Device port is just a matter of connecting the PCI signals with the same
name together.
The PCI bus on the NET2282 can be either a PCI host or a PCI adapter. As a PCI
adapter, the NET2282 can fit into any standard PCI slot (3.3 or 5 Volts). This means
that any system with a PCI bus can instantly add a USB 2.0 peripheral port in
minutes. As the NET2282 is supported by several operating systems, additional
software modification can be minimized.
As a PCI host, the NET2282 can be used to convert existing PCI cards or CardBus
adapters to stand alone USB devices or ExpressCard adapters. Rather than relying
on a host PC鈥檚 PCI chipset, the NET2282 has all the resources, including emulated
main memory, to configure and bring up a PCI device. Furthermore, the Auto-
Enumeration Technology in the NET2282 allows the USB device to be enumerated
by a USB host without any interaction on the PCI side.
Tuned for Performance
The NET2282 is designed for high performance transfers, with its USB port able to
match the bandwidth of most PCI chips.
Four mastering,
descriptor
based DMA
controllers,
along with the
NET2282鈥檚 true
FIFO structure,
allow it to
sustain transfers
of up to 40
MBytes/sec.
Even at these
speeds, and the
full PCI bus
running, the
low power
consumption of
the NET2282
allows for its
use in USB
bus-powered
devices.
Figure 1: NET2282 Block Diagram
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