Fast and Accurate USB Receiver Tests with the J-BERT M8020A
应用文章
Introduction
USB 3.0 controllers are now common in PCs and have begun to appear in devices such as tablets and mobile phones. A wide variety of external storage products already use this interface today. Unlike previous USB generations, USB 3.0 is an interface with individual differential transmit and receive lanes. Each run at 5 Gb/s and are 8b/10b coded. The USB 3.1 specification, which more than doubles the possible throughput, was released in 2013. To make this increase possible, the physical data rate was doubled and the coding was changed from 8b/10b to 128b/132b coding since 8b/10b coding has a 20% overhead and 128b/132b requires significantly less overhead. The first USB 3.1 10G capable products are expected to show up on the market in 2014.
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