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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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UPSD323X 数据表(PDF) 82 Page - STMicroelectronics |
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UPSD323X 数据表(HTML) 82 Page - STMicroelectronics |
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82 / 176 page  µPSD323X 82/176 Master receiver mode flow. 1. Read SxSTA. 2. If BBUSY == 1 then go to step1. Else then write slave address to SxDAT and set both ENI1 and STA, reset AA in SxCON. 3. Wait for interrupt. 4. Read SxSTA. If BLOST == 1 or /ACK_REP == 1 then write dummy data to SxDAT Go to step1. Else then clear STA and write FFH to SxDAT. Set AA in SxCON. 5. Wait for interrupt. 6. Read SxSTA. If this datum == LAST then reset AA* and read SxDAT**. Go to step7. Else then read SxDAT**. Go to step5. 7. Wait for interrupt. Read SxSTA. Read SxDAT**. Note: 1. (*) If the master want to terminate the current data re- quests, it don’t have to acknowledge to the slave. 2. (**) This action should be the last. Slave transmitter mode. 1. Write slave address to SxADR, set AA and ENI in SxCON. 2. Wait for interrupt. 3. Read SxSTA and write FFH to SxDAT*. 4. 5. Wait for interrupt. 6. Read SxSTA. If STOP == 1 then Go to step7. Else then read data from SxDAT*. Go to step5. 7. Read dummy data from SxDAT*. Note: 1. (*) This action should be the last. |
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