| 释义 |
8B/10B (8 Bits/10 Bits) A line coding technique that maps eight data bits into a 10-bit symbol, or character. The eight-bit data octet is divided into two groups. The three most significant bits, or leftmost bits, are encoded into a four-bit group (3B/4B).The five least significant bits, or rightmost bits, are encoded into a six-bit group (5B/6B).The two groups are then concatenated, or joined together, and placed on the line. As eight bits yields 256 possible bit combinations (28 = 256) and 10 bits yields 1,024 (210 = 1024) bit combinations, each eight-bit data octet can be phrased two different ways, with one being the bit-wise 74570cintro.qxd 9/11/07 12:17 PM Page 16 |