By Intel, Microsoft, Hewlett-Packard, Texas Instruments, NEC, ST-NXP composed of industry giants such as USB 3.0 Promoter Group announced that the organization responsible for developing a new generation of USB 3.0 interface cable standard has been formally completed and publicly released. New specification provides ten times the transmission speed of USB 2.0 and higher energy efficiency, can be widely used for PC peripherals and consumer electronic products.
Completed the development of the standard USB 3.0 interface cable has been transferred to the specification of the management organization USB Implementers Forum (referred to as the USB-IF). The organization will work with hardware vendors to develop standards to support USB 3.0 interface cable of the new hardware, but the actual products to market have to wait for some time.
USB 1.0 interface, cable is the first edition in 1996, appeared, the speed is only 1.5Mb / s; two years after the upgrade to USB 1.1 interface cable, but also greatly enhance the speed to 12Mb / s, since in some older devices can also see this standard interface; April 2000, current widespread use of USB 2.0 interface cable launch speeds of 480Mb / s, USB 1.1 interface cable is four times; now the first eight months later, USB 2.0 interface cable already unable to meet the speed of application needs, USB 3.0 interface, cable also came into being, the maximum transmission bandwidth of up to 5.0Gb / s, while the A-type interface backward compatible.
IEEE organization has also recently approved a new standard IEEE1394-2008, but the new version of FireWire transfer speed is only 3.2Gb / s, USB 3.0 is equivalent to 60% more. No wonder Apple and other industry players generally lost interest in this technology.
USB 2.0 based on half-duplex two-wire bus, can only provide a unidirectional data stream, while the USB 3.0 interface cable with a dual simplex four-wire differential signal lines, and therefore supports the simultaneous bi-directional data stream, which is the new standard rate soared the key reason.
In addition, USB 3.0 interface, cable also introduces a new power management mechanisms to support standby, hibernate and suspend the other state.
Measuring instruments maker Tektronix (Tektronix) last month announced the first USB 3.0 interface cable for the test tools that can help developers verify that the new specification and the compatibility between hardware design. |
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