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ST25R3916 Datasheet(PDF) 59 Page - STMicroelectronics |
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ST25R3916 Datasheet(HTML) 59 Page - STMicroelectronics |
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59 / 157 page  DS12484 Rev 4 59/157 ST25R3916/7 Application information 156 4.4 Direct commands Table 13. List of direct commands Code (hex) Name Comments Chaining Interrupt after termination Operation mode(1) C0, C1 Set default Puts the ST25R3916/7 into power- up state No No All C2, C3 Stop all activities Stops all activities: transmission, reception, direct command execution, timers Yes No en C4 Transmit with CRC Starts a transmit sequence with automatic CRC generation Yes No en C5 Transmit without CRC Starts a transmit sequence without automatic CRC generation Yes No en C6 Transmit REQA Transmits REQA command (ISO14443A mode only) Yes No en, tx_en C7 Transmit WUPA Transmits WUPA command (ISO14443A mode only) Yes No en, tx_en C8 NFC initial field ON Performs Initial RF Collision avoidance and switches on the field Yes Yes en C9 NFC response field ON Performs Response RF Collision avoidance and switches on the field Yes Yes en CD Go to sense (Idle) Puts the passive target logic into Sense (Idle) state Yes No en, rx_en CE Go to sleep (Halt) Puts the passive target logic into Sleep (Halt) state Yes No en, rx_en D0 Mask receive data Stops receivers and RX decoders Yes No All D1 Unmask receive data Starts receivers and RX decoders Yes No All D2 Change AM modulation state Changes AM modulation state Yes No en, tx_en D3 Measure amplitude Measures the amplitude of the signal present on RFI inputs and stores the result in the A/D converter output register No Yes All(2) D5 Reset RX gain Resets receiver gain to the value in the Receiver configuration register 4 No No en D6 Adjust regulators Adjusts supply regulators according to the current supply voltage level No Yes en D8 Calibrate driver timing Starts the driver timing calibration according to the setting in the TX driver timing display register No No en D9 Measure phase Measures the phase difference between the signal on RFO and RFI No Yes All(2) |
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