Method and apparatus for synchronous communication of frames of digital information

摘要

A method and apparatus for synchronous communication of frames of serial data is provided. A framing pattern and data payloads are communicated over a first communication path. A clock signal is communicated over a second communication path. The clock signal is synchronous to the data to allow easy data recovery at the receiver. The framing pattern is communicated between each data payload. The framing pattern has a length greater than the length of each data payload. The framing pattern includes one or more bits of a first logic level followed contiguously by one or more bits of a second logic level. Since the framing pattern is longer than each data payload, a data payload can never contain sufficient information to mimic a framing pattern. A transmitter and a receiver are provided that avoid the need for complex circuitry while readily identifying any communication path failures so as to prevent propagation of erroneous data.

主权项

1. A method for communicating data comprising the steps of:
transmitting a data signal, the data signal including frames, each frame including:
only one of a plurality of payloads of the data, anda contiguous framing pattern, the contiguous framing pattern having a framing pattern length greater than a payload length of each of the plurality of the payloads of the data, the contiguous framing pattern having only a single logic level transition within the contiguous framing pattern; and transmitting a clock signal, the clock signal allowing synchronous sampling of the data signal.