Decision feedback equalization circuit and high-speed signal channel transmission structure
A decision feedback equalization and circuit technology, applied in the transmission system, digital transmission system, electrical components, etc., can solve the problems of large area and power consumption, technical difficulty, cumbersome implementation, etc., to achieve an optimized equalization scheme and a clear control loop , the effect of a simple equalization algorithm
Active Publication Date: 2022-01-28
XIAN MICROELECTRONICS TECH INST
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Problems solved by technology
The traditional decision feedback equalization technology has complex algorithms, high technical difficulty, and cumbersome implementation, which requires a large area and power consumption
Method used
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[0041] Such as figure 1 As shown, a high-speed signal channel transmission structure includes a transmitter 811 , a channel 812 , a continuous time linear equalization circuit 813 , and a decision feedback equalization circuit 814 .
[0042] The transmission signal XN is connected to the input terminal of the transmitter 811, the output signal A1 of the transmitter 811 is connected to the input terminal of the channel 812, the channel output signal A2 is connected to the input terminal of the continuous time linear equalization circuit, and the continuous time linear equalization circuit A3 is connected to the decision feedback equalization circuit The input terminals of the circuit are connected, and the decision feedback equalization circuit outputs a signal YN.
[0043] Such as figure 2 As shown, a decision feedback equalization circuit 813 of the present invention includes a two-tap filter 812, a comparator 822, a comparator 823, a comparison 824, a threshold tracking ad...
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The invention discloses a decision feedback equalization circuit and a high-speed signal channel transmission structure. The decision feedback equalization circuit compares the amplitude after forward maximum compensation and the amplitude after reverse maximum compensation of decision feedback equalization to obtain the compensation condition of an equalization filter on the input signal under two conditions of a post-standard component, adjusts the control coefficient of the filter in real time, and optimizes the equalization scheme of the decision feedback equalization circuit to make the balanced signal reach the optimal state. The equalization algorithm is simple, the control loop is clear, and the circuit structure is easy to realize. When it is judged that the absolute value of the amplitude after forward maximum compensation of feedback equalization is smaller than the absolute value of the amplitude after reverse maximum compensation, the absolute value of the coefficient of the equalization filter needs to be increased; and when it is judged that the absolute value of the amplitude after forward maximum compensation of feedback equalization is greater than the absolute value of the amplitude after reverse maximum compensation, the absolute value of the coefficient of the equalization filter needs to be reduced.
Description
technical field [0001] The invention belongs to the field of semiconductor integrated circuits, in particular to a judgment feedback equalization circuit and a high-speed signal channel transmission structure. Background technique [0002] As the application market continues to increase the requirements for electronic system performance, cost, power consumption, and volume, integrated circuits are undergoing rapid changes driven by Moore's Law. The batch production and processing capabilities of commercial process lines have entered the nanometer era. The integration of SoC exceeds 10 billion transistors, and various processor architectures such as CPU, GPU, and NPU emerge in an endless stream, and the operating frequency of the chip has been increased to 3GHz or above. In order to further improve the data bandwidth of chip input and output interface throughput and realize high-speed information interaction between chips, the design of high-speed high-performance serial inte...
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Patent Timeline
Login to View More IPC IPC(8): H04L25/03
CPCH04L25/03949H04L25/03267Y02B70/10
Inventor 李海松高利军赵雁鹏岳红菊尹飞蒋轶虎党秋实杨靓
Owner XIAN MICROELECTRONICS TECH INST