Method for processing SKP ordered sets in USB (universal serial bus) 3.0
A sequence set and physical layer technology, applied in the field of processing SKP sequence sets, can solve the problems that the USB2.0 speed cannot meet the needs of practical applications, and the functions of peripheral devices are limited.
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[0023] First of all, SKP characters are randomly added to the data stream in pairs at the sending end, so at the receiving end, when the data stream mixed with SKP characters is passed from the physical layer of the USB device to the IP core of the USB , there may be 3 modes: 1.32 bits x 125 MHz (4 characters, 4 characters passed from the physical layer of the USB device to the IP core of the USB); 2.16 bits x 250 MHz (2 characters, 2 characters 3.8-bit x500 MHz (1 character, 1 character is passed from the physical layer of the USB device to the USB IP core). However, due to the difficulty and feasibility of IP core design, when the data stream mixed with SKP characters enters the IP core, it must go through a "ping-pong operation" to convert the data streams of the above three modes into 32-bit x 125 MHz Data flow to facilitate subsequent processing and manipulation. In this way, when the IP core subsequently processes data, it processes 32 bits every 8 nanoseconds, that is,...
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