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new technology--USB 3.0
time2010/12/08
With the requirement of consumers usb 3.0 is coming,let`s learn more about this new technology together.
1.USB 3.0 advantages compare with USB 2.0
Transfer rate | Reading and writing | Power supply | |
Usb 3.0 | 3.2Gbp（400MB/S) | Read and write simultaneously at full capacity | 150 mA voltage from 4.4 volts to 4 volts |
Usb 2.0 | 480Mbps (60MB/s) | Read and write one by one | 83mA |
2. USB 3.0 applications area
These devices include: high-resolution web camera, video monitor video monitor, such as using DisplayLink USB video technology products, USB interface, digital cameras, digital cameras Blu-ray and so on.
3.USB3.0 work principle
USB 3.0 can become an "excessive speed" performance, fully benefited from improvements in technology. compared to the current USB 2.0 interface, USB 3.0 increase more parallel mode the physical bus. Standard USB 3.0 interface dimensions
Can pick up a USB cable around to see the interface section. Structure of the original 4-wire (power, ground, 2 data), based on, USB 3.0 and then increased by 4 lines, for receiving and transmitting signals. Therefore, it is within or interface cable, a total of 8 lines. It is the additional 4 (2 pairs) line provides the "SuperSpeed USB" support the required bandwidth, to achieve "speeding." Obviously the two USB 2.0 (1 pair) line, is not enough.
Can pick up a USB cable around to see the interface section. Structure of the original 4-wire (power, ground, 2 data), based on, USB 3.0 and then increased by 4 lines, for receiving and transmitting signals. Therefore, it is within or interface cable, a total of 8 lines. It is the additional 4 (2 pairs) line provides the "SuperSpeed USB" support the required bandwidth, to achieve "speeding." Obviously the two USB 2.0 (1 pair) line, is not enough.
In addition, the methods of signal transmission control method is still used host, but instead of the asynchronous transfer. USB 3.0 using a two-way data transmission mode, USB 2.0 is no longer the era of half-duplex mode. In short, the data flow in one direction only with the can, and simplifies the waiting time due to consumption of.