| 摘要 |
An asynchronous data conversion system enables high conversion efficiency and reliability to be secured because it is capable of preventing lack of the data or redundancy of the data, and if lack of the data or redundancy of the data occurs, it is capable of detecting it by way of error. In a system where a write clock is asynchronized with a read clock, from the state relationship of HIGH/LOW in between a write enable signal and a read enable signal, a write ready signal with a writing to a latching section as holding state, a read ready signal with a reading-out as holding state are generated at a ready signal generating section synchronizcd with the write clock. When it is incapable of writing to latching section newly, outputting a write error signal from a write error detecting section. When the data for reading-out to the latch section does not exist, outputting the read error signal from the read error detecting section.
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