.
Version 1.0 2005
NET2280
Features
Overview
o
PCI v3.0 - 33 MHz, 32-Bit Bus
o
Hi-Speed USB 2.0 Peripheral Port
o
Integrated 8051 CPU @ 60 MHz
o
8K of Random Access Memory
o
Descriptor based DMA Controllers
(4) for automatic data transfers
o
Low Power 0.25µ process ideal for
USB Bus Powered Operation
o
Lead Free Packaging
o
14x14mm, 120 Pin TQFP Package
Conventional PCI Interface
o
PCI v3.0 - 33 MHz, 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
USB Auto-Enumeration Technology
o
Support for Bulk, Isochronous, and
Interrupt Endpoints
o
Integrated PHY
PCI to USB 2.0 Hi-Speed Peripheral Controller
Adding Hi-Speed USB 2.0 to Embedded PCI Designs
PLX Technology’s NET2280 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 NET2280 is one of the only
PCI based USB Peripheral Controllers available. With the NET2280, 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 NET2280 can either be a PCI Host or a PCI Adapter. As a PCI
Adapter, the NET2280 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 NET2280 is supported by several operating systems, additional
software modification can be minimized.
As a PCI Host, the NET2280 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’s PCI Chipset, the NET2280 has a built-in CPU, to configure and bring
up a PCI device. Furthermore, the Auto-Enumeration Technology in the NET2280
allows the USB device to be enumerated by a USB Host without any interaction on
the PCI side.
Tuned for Performance
The NET2280 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
NET2280’s 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
NET2280 allows
for its use in USB
Bus-Powered
devices.
Figure 1: NET2280 Block Diagram
PLX [ PLX TECHNOLOGY ]
