Abstract: A communication system, network, interface, and port architecture are provided for transporting data across a network. The network can be arranged by connecting the ports in a daisy chain fashion to achieve a ring architecture or topology. The network forwards data according to a specific network protocol. A first port forwards frames having a preemptive acknowledge field before the payload. A second port receives these frames, stores them in a frame buffer and modifies the preemptive acknowledge field according to its available frame buffer capacity. Said first port controls its data flow according to the modified preemptive acknowledge field.

Abstract: A communication system, network, interface, and port architecture are provided for transporting data across a network. The network can be arranged by connecting the ports in a daisy chain fashion to achieve a ring architecture or topology. The network forwards data according to a specific network protocol. A first port forwards frames having a preemptive acknowledge field before the payload. A second port receives these frames, stores them in a frame buffer and modifies the preemptive acknowledge field according to its available frame buffer capacity. Said first port controls its data flow according to the modified preemptive acknowledge field.

Abstract: A communication system is provided for interconnecting a network of digital systems. Each node of the communication system may include a transceiver and an encoder/decoder. The encoder codes an incoming data stream and forwards the encoded data stream across a communication link based on a DC-adaptive encoding mechanism. The encoded data stream is substantially free of a DC value that would skew the detector components at the receiver end of the communication link. Moreover, the encoded signal is forwarded at no greater than the incoming bitstream. Encoding occurs dependent on a digital sum value of the preceding clock cycle (DSVn−1) for the encoded bitstream and the logic values for the incoming bitstream during the current clock cycle n as well as the subsequent clock cycle n+1. Encoding according to normal encoding or multiple-ones encoding is dependent on those values.