AN-1139 Binary Sequence Detector

In baseband digital communication channels, binary serial transmission is the most prevalent way to share information between transmitters and receivers. These serial channels are used in networks where computers, embedded systems and even IoT (Internet of Things) devices can be connected via a number of standard protocol implementations, such as TCP, UDP, RS232, etc. In channels where binary data is sent one bit at a time at high data rates, the binary transmission is referred to as a stream and the carried information is called a packet. The challenge of this type of transmission is defining the start and end of the transmission. In general, flags are used to allow the receiver to identify the start and end of the packet. To achieve this objective, bit sequences are defined to identify the beginning and ending of a message and they are used to set or clear the flags. Binary sequence detectors are used to detect these sequences at the receiving end. This application note shows how to implement a design using Silego GreenPak based on a state machine.


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