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OM25180FDKM Datasheet(PDF) 93 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 93 Page - NXP Semiconductors |
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93 / 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 93 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend 17 RX_PROTOCOL_ERROR R 0* This flag is set to 1, when a protocol error has occurred. A protocol error can be a wrong stop bit, a missing or wrong ISO/IEC14443 B EOF or SOF or a wrong number of received data bytes. Note: When a protocol error is detected, data reception is stopped. Note: The flag is automatically cleared at start of next reception. 16 RX_DATA_INTEGRITY_ERROR R 0* This flag is set to 1, if a data integrity error has been detected. Possible caused can be a wrong parity or a wrong CRC. Note: On a data integrity error, the reception is continued Note: The flag is automatically cleared at start of next reception. Note: If a reversed parity bit is a stop criteria, the flag is not set to 1 if there is a wrong parity. 13:15 RX_NUM_LAST_BITS R 0* Defines the number of valid bits of the last data byte received in bit-oriented communications. If zero the whole byte is valid. 9:12 RX_NUM_FRAMES_RECEIVED R 0* Indicates the number of frames received. The value is updated when the RxIRQ is raised. Note: This bit field is only valid when the RxMultiple is active (bit RX_MULTIPLE_ENABLE set) 8:0 RX_NUM_BYTES_RECEIVED R 0* Indicates the number of bytes received. The value is valid when the RxIRQ is raised until the receiver is enabled again. Table 83. RX_STATUS_REG register (address 0013h) bit description …continued Bit Symbol Access Value Description Table 84. TX_UNDERSHOOT_CONFIG register (address 0014h) bit description Bit Symbol Access Value Description 16:31 TX_UNDERSHOOT_PATTERN Undershoot pattern which is transmitted after each falling edge. 5:15 RESERVED - 1:4 TX_UNDERSHOOT_PATTERN_ LEN Defines length of the undershoot prevention pattern (value +1). The pattern is applied starting from the LSB of the defined pattern; all other bits are ignored. 0 TX_UNDERSHOOT_PROT_ENA BLE If set to 1; the undershoot protection is enabled Table 85. TX_OVERSHOOT_CONFIG register (address 0015h) bit description Bit Symbol Access Value Description 31:16 TX_OVERSHOOT_PATTERN R/W 0* - FFFFh Overshoot pattern which is transmitted after each rising edge. |
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