What is Serializer and Deserializer?
Transmission (Serializer)
- Parallel-to-Serial Conversion: The SerDes device receives parallel data, typically in the form of bytes or words from the data source.
- Data Serialization: The SerDes converts the parallel data into a serial bit stream. This involves arranging the bits from the multiple data lines into a single serial data stream.
- Clock Generation: A clock signal is generated to ensure synchronized transmission. This clock is typically embedded in the serial data stream or transmitted separately.
- Encoding and Modulation: Depending on the communication standard and channel characteristics, modulation techniques may be applied to the serial data stream to improve signal integrity and error tolerance.
- Pre-emphasis/Equalization: To compensate for the signal attenuation and distortion over the communication channel pre-emphasis and equalization techniques may be employed.
Reception (Deserializer)
- Serial-to-Parallel Conversion: The SerDes device receives the serialized data stream along with clock signal.
- Clock Recovery: The receiver recovers the clock signal from received data to correctly sample the incoming bits.
- Decoding and Demodulation: If encoding and modulation were applied during transmission and demodulation are performed to extract the original data.
- Parallel Data Reconstruction: The serialized data is converted back into parallel data in which can be further processed or sent to destination.
- Error Detection and Correction: The Error detection and correction techniques are applied to ensure data integrity especially in noisy or high-speed channels.
- Post-equalization: The Post-equalization techniques may be used to further compensate for the signal distortion before delivering the data to receiver.
High-Speed SerDes (Serializer-Deserializer) Interfaces
In this article, we will learn about High-Speed SerDes (Serializer-Deserializer) Interfaces. A High-Speed SerDes interface is a crucial component in modern electronic systems designed for the transmitting and receiving of high-speed digital data between integrated circuits or systems. It converts parallel data into a serial stream for transmission over high-speed channels and then reverts the serial data back to parallel at the receiving end.
Table of Content
- What is Serializer and Deserializer?
- Types of SerDes
- Working of SerDes
- How to Design SerDes?
- The Four Serializer/Deserializer Architectures
- Why Do We Need Serializer/Deserializer (SerDes)?
- Differences Between Parallel and Serial SerDes
- Properties and Characteristics of SerDes
- Challenges, Need and Demand for High-Speed Circuits
- Advantages and Disadvantages of SerDes
- Applications of SerDes
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