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We
are proud to announce the very first standalone firewire to USB
2.0 converter. The Firewater-Pro will allow on the fly conversion
of data over IEEE 1394 4-pin or 6-pin cables directly the the USB
bus that is already implemented in most current motherboards.
Today's USB devices operate with full
compatibility in a USB 2.0 system. The added capabilities of USB
2.0 have expanded the market segment for USB peripherals, while
enabling retail products to transition with the installed base.
Support of USB 2.0 is recommended for hubs and higher bandwidth
peripherals. Designing a USB 2.0 peripheral will be a similar engineering
effort to that of designing a USB 1.1 peripheral. Some low-speed
peripherals, such as HID devices, may never be redesigned to support
the USB 2.0 high-speed capability in order to maintain the absolute
lowest cost.
Role of Host PC software. Current
applications software on the PC continues to operate with USB 1.1
peripherals and is unchanged. The system software will comprehend
the increased capabilities of USB 2.0 peripherals so that it can
optimize performance. The system software will also detect sub-optimal
configurations, i.e. a USB 2.0 peripheral attached to a USB 1.1
hub, and will alert the user and recommend a better configuration
for attaching the peripherals. New applications will be written
to take advantage of the higher speed capabilities and ease-of-use
of USB 2.0 peripherals and drivers. Role of the hub. A USB 2.0 hub
accepts high-speed transactions at the faster frame rate and must
deliver them to high-speed USB 2.0 peripherals andUSB 1.1 peripherals.
This data rate matching responsibility will require some increased
hub complexity and temporary buffering of the incoming high-speed
data. In the simplest case of communicating with an attached USB
2.0 peripheral, the hub repeats the high-speed signals on appropriate
USB 2.0 upstream and downstream cables just as a USB 1.1 hub repeats
full and low-speed signals today on USB 1.1 devices. This allows
USB 2.0 peripherals to utilize the majority of USB 2.0 bandwidth.
To communicate with USB 1.1 peripherals, a USB 2.0 hub contains
a mechanism that supports the concept of matching the data rate
with the capabilities of the downstream device. In other words,
the hub manages the transition of the data rate from the high speed
of the host controller to the lower speed of a USB 1.1 device. This
feature of USB 2.0 hubs means that USB 1.1 devices can operate along
with USB 2.0 devices and not consume disproportionate amounts of
USB 2.0 bandwidth. This new hub architecture is intended to be as
simple and cost effective as possible, and yet deliver the full
capabilities of 1.1 connections. The new USB 2.0 hub will be completely
defined in the USB 2.0 specification providing clear implementation
guidelines for hub vendors and allowing a single software driver
to service USB 2.0 hub products from multiple vendors.
By adding on the fly conversion from
the USB 2.0 to IEEE 1394 (firewire/iLink), vendors and prfessionals
will reap the rewards of low-cost high speed transfer without limitation.
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