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Novel high-speed serial interface transmitter

A high-speed serial interface and transmitter technology, applied in transmitter/receiver shaping network, advanced technology, climate sustainability, etc., can solve problems such as impedance matching and equalization coefficients that are difficult to adjust independently, and achieve power reduction consumption effect

Active Publication Date: 2015-02-04
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the voltage-mode driver has the disadvantages that impedance matching and equalization coefficients are not easy to adjust independently

Method used

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  • Novel high-speed serial interface transmitter
  • Novel high-speed serial interface transmitter
  • Novel high-speed serial interface transmitter

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Embodiment Construction

[0019] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0020] like figure 1 As shown, a new type of high-speed serial interface transmitter, including combiner, clock generation module, voltage mode driver, low-pass filter, transconductance stage and so on. The combiner is responsible for combining multiple low-speed parallel data into two differential high-speed serial data: MAINP / MAINN and POSTP / POSTN. Among them, POSTP / POSTN is obtained by delaying MAINP / MAINN by one data symbol width. The clock generation module is responsible for generating the clock signals required by the combination of all levels in the combiner. It should be noted that, in order to realize feed-forward equalization with more taps, the combiner here can output more channels of hi...

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Abstract

The invention discloses a novel high-speed serial interface transmitter. The transmitter comprises a combiner, a voltage-mode driver, a feed-forward equalizer and a feedback equalizer, wherein the feed-forward equalizer is integrated in the voltage-mode driver, an input end is connected with high-speed code stream serial data output by the combiner, and output impedance and an equilibrium factor can be independently adjusted; the feedback equalizer comprises a low-pass filter and a transconductance stage circuit which are both connected with an output end of the voltage-mode driver; the low-pass filter is used for extracting a low-frequency component of the high-speed data code stream output by the voltage-mode driver; the transconductance stage is simultaneously connected with the output of the low-pass filter; output voltage of the low-pass filter is converted into current, and the current and the output current of the voltage-mode driver are summated. The feed-forward equalizer is combined with the feedback equalizer, so that the skin effect attenuation and the dielectric loss attenuation are compensated through feedback and feed-forward respectively, meanwhile equilibrium is realized, and the power consumption of the transmitter is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of circuit design and data transmission, in particular to a novel high-speed serial interface transmitter. Background technique [0002] High-speed serial interface transceivers are widely used in wired data transmission. The transmitter combines multiple channels of parallel data and sends them to the transmission channel. The receiver receives the signal from the transmission channel and splits it for subsequent circuits to continue processing. [0003] In recent years, the data rate transmitted by high-speed serial transceivers has been rising continuously, and the data rate of commercial high-speed serial interfaces has reached 28Gbps. The increasing data bit rate poses many challenges to the design of high-speed serial interface transmitters. Among them, the more serious challenge is that the transmission of data streams with high transmission code rates in the channel is severely attenuated by high ...

Claims

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Application Information

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IPC IPC(8): H04L25/03
CPCY02D30/50
Inventor 黄柯王自强郑旭强张春王志华
Owner TSINGHUA UNIV
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