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Reception circuit, conversion table generating method of AD converter of the same and signal transmission system

A technology of receiving circuits and converters, applied in transmission systems, line transmission parts, electrical components, etc., can solve the problems of increasing power consumption, neglecting power consumption, unable to obtain clear specifications, etc., to improve the ratio and reduce reproduction. effect of error

Inactive Publication Date: 2010-08-04
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, when designing an ADC, since there is no information from the circuit that actually uses the ADC, clear specifications cannot be obtained at the time of design, so the power consumption is ignored and the design is made in such a way that nonlinearity is suppressed as much as possible, so there is also a power consumption in this method Bigger problem

Method used

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  • Reception circuit, conversion table generating method of AD converter of the same and signal transmission system
  • Reception circuit, conversion table generating method of AD converter of the same and signal transmission system
  • Reception circuit, conversion table generating method of AD converter of the same and signal transmission system

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Embodiment Construction

[0063] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0064] The signal transmission system of the first embodiment of the present invention has such Figure 5 The basic structure shown. Figure 7 It is a block diagram showing the configuration of the receiving circuit 3 in the first embodiment. Such as Figure 7 As shown, the receiving circuit 3 includes an ADC 31 , an equalization circuit 32 and an ADC correction circuit 50 .

[0065] The ADC correction circuit 50 includes: a control section 51, which controls the components of the ADC correction circuit 50; a delay stage 52, which appropriately delays the output of the ADC 31 according to the delay amount of the equalization circuit; ADC output yn and the DFE calculation result h output by the equalization circuit 32 0 d n to generate a data table; the correction amount calculation part 54, which calculates the correction amount based on the data from the data tabl...

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Abstract

A reception circuit (3) is provided with an AD converter (31) outputting digital data in accordance with an input signal, a correction circuit (50) correcting non-linearity of the AD converter and an equivalent circuit (32) equalizing corrected digital data, and the reception circuit corrects non-linearity of ADC. The correction circuit (50) is provided with a conversion table (55) converting digital data which the AD converter outputs and a correction amount operation part (54) generating a conversion table from output data of the AD converter and output of the equivalent circuit.

Description

technical field [0001] The present invention relates to a high-speed transceiver system for performing signal transmission between a plurality of circuit modules in a chip, or signal transmission between LSI chips, signal transmission between boards or cases, and a receiving circuit constituting the system. Background technique [0002] figure 1 It is a diagram showing a schematic configuration of a high-speed signal transmission system. Such as figure 1 As shown, the signal transmission system includes a sending circuit 1 , a transmission line 2 and a receiving circuit 3 . In the transmission circuit 1, the low-speed parallel data is converted into serial data by the multiplexer (MUX) 11, and the serial data is output to the transmission line by the driver 12 having the same output impedance as the characteristic impedance of the transmission line 2 2. Serial data is input to the receiving circuit 3 via the transmission line 2 . The input reception waveform received in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/06H04B3/04
CPCH04B3/04
Inventor 木船雅也
Owner FUJITSU LTD