| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of noise while rewriting firmware using the same format as normal processing. SOLUTION: A significant bit length is divided into four sections and a data signal RDATA is read once within each of the sections. In an example shown in Fig.3, a data signal RDATA is read once a period of timeτ1 after the fall of a word clock LRCLK, and thereafter, read three times at timing delayed by a period of timeτ2. As a result, a CPU 10 reads the data signal RDATA eight times in one frame and extracts 8-bit data. The extracted 8-bit is analyzed to perform the processing of rewriting the firmware. COPYRIGHT: (C)2010,JPO&INPIT
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