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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS3415 датащи(PDF) 62 Page - ams AG |
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AS3415 датащи(HTML) 62 Page - ams AG |
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62 / 102 page  AS3415/AS3435 – 62 ams Datasheet, Confidential: 2014-Jun-13 [v1-30] De tail ed De sc rip t ion In order to change the data direction a repeated START condition is issued on the 1st SCL pulse after the acknowledge bit of the word address transfer. After the reception of the device-read address, the slave becomes the transmitter. In this state the slave transmits register data located by the previous received word address vector. The master responds to the data byte with a not-acknowledge, and issues a STOP condition on the bus. Figure 80: Sequential Read Sequential Read is the extended form of Random Read, as more than one register-data bytes are transferred subsequently. Different from the Random Read, for a sequential read, the transferred register-data bytes are responded with an acknowledge from the master. The number of data bytes transferred in one sequence is unlimited (consider the behavior of the word-address counter). To terminate the transmission the master has to send a not-acknowledge following the last data byte and then generate the STOP condition. Figure 81: Current Address Read S DW A WA A N A read register WA++ data Sr DR P reg_data 2 A read register WA++ reg_data n ... A read register WA++ S N A read register WA++ data DR P reg_data 2 A read register WA++ reg_data n ... A read register WA++ |
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