Error correction capability aware BCH implementation for NAND flash memories in Earth observation satellites

M. Fatih Aydogdu; Yakup Murat Mert

doi:10.1117/12.2184644

21 May 2015 Error correction capability aware BCH implementation for NAND flash memories in Earth observation satellites

M. Fatih Aydogdu, Yakup Murat Mert

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Proceedings Volume 9501, Satellite Data Compression, Communications, and Processing XI; 950112 (2015) https://doi.org/10.1117/12.2184644
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

In this paper, a parallel FPGA architecture implementing BCH error correction for NAND flash memories in storage modules of Earth observation satellites (EOS) is presented. In order to satisfy the error correction requirements of NAND flash memories the designed module is capable of correcting 4 erroneous bits in code words (CW) of 4148 bits using shortened BCH (4148, 4096) algorithm. Besides the standard BCH encoding and decoding procedure a code selection module is added to the architecture to guess whether or not the CW has more than 4 errors. If more than 4 errors occurs in the CW the architecture understands that the CW is uncorrectable and does not try to change any bits which will most probably inject more errors to the CW. The design is implemented on a XC7VX485T FPGA from Virtex 7 series of Xilinx and with a 300 MHz system clock, it is capable of encoding and decoding information at 4,78GBits/sec.

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M. Fatih Aydogdu and Yakup Murat Mert "Error correction capability aware BCH implementation for NAND flash memories in Earth observation satellites", Proc. SPIE 9501, Satellite Data Compression, Communications, and Processing XI, 950112 (21 May 2015); https://doi.org/10.1117/12.2184644

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KEYWORDS

Computer programming

Field programmable gate arrays

Satellites

Clocks

Earth observing sensors

Very large scale integration

Data storage

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