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OM25180FDKM Datasheet(PDF) 25 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 25 Page - NXP Semiconductors |
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25 / 149 page  PN5180 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved. Product data sheet COMPANY PUBLIC Rev. 3.0 — 7 October 2016 240930 25 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend Precondition: Host shall configure the Transceiver by setting the register SYSTEM_CONFIG.COMMAND to 0x3 before using the SEND_DATA command, as the command SEND_DATA is only writing data to the transmission buffer and starts the transmission but does not perform any configuration. Note: When the command terminates, the transmission might still be ongoing, i.e. the command starts the transmission but does not wait for the end of transmission. Condition: The size of ‘Tx Data’ field must be in the range from 0 to 260, inclusive (the 0 byte length allows a symbol only transmission when the TX_DATA_ENABLE is cleared).‘Number of valid bits in last Byte’ field must be in the range from 0 to 7. The command must not be called during an ongoing RF transmission. Transceiver must be in ‘WaitTransmit’ state with ‘Transceive’ command set. If the condition is not fulfilled, an exception is raised. READ_DATA Description: This command reads data from the RF reception buffer, after a successful reception. The RX_STATUS register contains the information to verify if the reception had been successful. The data is available within the response of the command. The host controls the number of bytes to be read via the SPI interface. Condition: The RF data had been successfully received. In case the instruction is executed without preceding an RF data reception, no exception is raised but the data read back from the reception buffer is invalid. If the condition is not fulfilled, an exception is raised. SWITCH_MODE Table 16. Coding of ‘valid bits in last byte’ Number/Parameter Functionality 0 All bits of last byte are transmitted 1-7 Number of bits within last byte to be transmitted. Table 17. READ_DATA Payload Length (byte) Value/Description Command code 1 0x0A Parameter 1 x00 Response 1...508 Array of up to 508 elements {Receive data} 1 byte Receive data: data which had been received during last successful RF reception Table 18. SWITCH_MODE Payload Length (byte) Value/Description Command code 1 0x0B |
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