Method for switching data flow in a fiber distributed interface (FDDI) system

摘要: An integrated circuit for use in fiber distributed data interface (FDDI) system has four elastic layer and buffer management (ELM) circuits (12, 14, 16, 18) coupled through a crossbar switch (20). The (20) allows any of the ELM to be other or one three external buses FDDI communication. By using devices on single circuit, performance is improved while design made easier more flexible than previously possible. Cipher circuitry (22, 24, 26, 28) used scramble descramble ingoing outcoming from devices. Concentrators, workstations, local area networks (LANs), like may incorporate (10) improve flexibility.