Self-repairing SRAM (Static Random Access Memory) controller design for DTMB (Digital Terrestrial Multimedia Broadcasting) demodulation chip

Abstract

The invention discloses a self-repairing SRAM (Static Random Access Memory) controller design for a DTMB (Digital Terrestrial Multimedia Broadcasting) demodulation chip. The controller comprises an error-address storage register group, an error detection circuit, a repairing circuit, an error reporting circuit and a reading-writing control circuit, wherein the self-repairing SRAM controller design is used for storing an error conventional SRAM address; the error detection circuit is used for carrying out error detection on the conventional SRAM, and storing the detected and error address into the error-address storage register group; the repairing circuit is used for mapping the error address into a redundant SRAM when a central module accesses the error address stored in the error-address storage register group and accessing the central module to the redundant SRAM; the error reporting circuit is used for carrying out error detection on the conventional SRAM after the repairing circuit maps the error address to the redundant SRAM, and reporting errors when detecting the error address; the reading-writing control circuit is used for finishing read-writing operation of the central module to the conventional SRAM and the redundant SRAM.

Description

technical field [0001] The invention belongs to the field of DTMB digital television, in particular to a design of a self-repairing SRAM controller for a DTMB demodulation chip. Background technique [0002] The main international standards for terrestrial digital TV broadcasting include ATSC in the United States, DVB-T in Europe, ISDB-T in Japan and DTMB in China. In 1999, my country set up digital TV R&D and industrialization and set up a national digital TV leading group, clearly declaring independent formulation of technical standards. In 2006, my country's digital TV terrestrial standard DTMB (Digital Television Terrestrial Multimedia Broadcasting) was launched. [0003] The terrestrial digital TV receiver completes the conversion from radio frequency signal input to terminal audio signal output and video signal display. The input RF signal needs to be demodulated and channel decoded before the output transport stream can be sent to the demultiplexing module for demul...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of self-repairing SRAM controller that is used for DTMB demodulation chip, is used to solve the prior art and adopts external DRAM to store intermediate data some production cost is higher, packaging technology is complicated and chip reliability is lower etc. shortcoming

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