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NRF52820-QDAA-R Datasheet(PDF) 324 Page - Nordic Semiconductor |
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NRF52820-QDAA-R Datasheet(HTML) 324 Page - Nordic Semiconductor |
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324 / 437 page  Peripherals A typical TWI setup consists of one master and one or more slaves. For an example, see the following figure. TWIS is only able to operate with a single master on the TWI bus. TWI master TWI slave (Sensor) Address = b1011000 TWI slave (TWIS) Address = b1011011 SCL SCL TWI slave (EEPROM) Address = b1011001 SCL R VDD R VDD SDA SDA SDA SCL SDA Figure 122: A typical TWI setup comprising one master and three slaves The following figure shows the TWI slave state machine. / STOPPED Unprepare TX, Unprepare RX TX entry / Unprepare TX entry / TXSTARTED IDLE PREPARETX RX entry / Unprepare RX entry / RXSTARTED [ READ && (TX prepared) ] [ WRITE && (RX prepared) ] STOP Stop sequence PREPARERX Restart sequence ENABLE Figure 123: TWI slave state machine The following table contains descriptions of the symbols used in the state machine. 4463_156 v1.0 324 |
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