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AM2320 Folha de dados(PDF) 8 Page - List of Unclassifed Manufacturers |
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AM2320 Folha de dados(HTML) 8 Page - List of Unclassifed Manufacturers |
8 / 27 page Figure 7: Schematic start and stop conditions ◎Byte transfer format I 2 C bus to send and receive data in bytes. Each byte is transmitted to the SDA line must be 8. The number of bytes per transfer is unrestricted. First, is the highest transmission bit data (MSB bit 7), the last transmission is lowest (LSB, bit 0). Also must be followed by an acknowledge bit after each byte (ACK). C transmission data shown in Figure 8. Figure 8: Data Transfer I2 C bus ◎I 2 C-bus response In the I 2 C bus data transfer process, one byte per transmission, must acknowledge with a status bit. Receiving reception data to inform the transmitter can acknowledge bit. Acknowledge bit hosts still generated clock pulse, and acknowledge the state of the bit data follow the principle of "Who receives who produce", that always generates acknowledge bit by the receiver, the receiver clock pulse response during the SDA line must be low, making it a high level during this clock pulse is stable low (see Figure 9), of course, setup and hold times must be considered (for details please refer to table 6). When sending data from the host to the machine, generating an acknowledge bit from the slave; master data received from the slave, the master generates an acknowledge bit. I 2 C bus standards: Acknowledge bit 0 indicates the receiver acknowledge (ACK), often abbreviated as A; it is a representation of non-response (NACK), often abbreviated as NA. The transmitter then sends LSB, should release the SDA line (pull SDA), in order to wait for the receiver generates an acknowledge bit. If the receiver is receiving at the time of completion of the last byte of data, or can’t receive more data should be generated to notify the non-response signal transmitter. If you find a receiver transmitter generates a non-responder status, you should send a termination. - 7 - |
Nº de peça semelhante - AM2320 |
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Descrição semelhante - AM2320 |
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