55.5.1.



4B5B

4B/5B - Ethernet 100-Base-FX/TX FDDI: 4B/5B, NRZI:

------------------------ 4B Char 5B ------------------------ 0000 0 11110 0001 1 01001 0010 2 10100 0011 3 10101 0100 4 01010 0101 5 01011 0110 6 01110 0111 7 01111 1000 8 10010 1001 9 10011 1010 A 10110 1011 B 10111 1100 C 11010 1101 D 11100 1110 E 11100 1111 F 11101 Idle 11111 J 11000 K 10001 T 01101 R 00111 S 11001 Quite 00000 Halt 00100 ------------------------


8B/10B - Ethernet 1000-Base-SX/LX/CX 5B/6B - 100VG-AnyLAN


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