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OM25180FDKM Datasheet(PDF) 34 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 34 Page - NXP Semiconductors |
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34 / 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 34 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend The PN5180 is pre-configured by EEPROM with settings for all supported protocols. The default EEPROM settings are considering typical antenna. It is possible for the user to modify the EEPROM content and by this adapt the default settings to individual antennas for optimum performance. The command UPDATE_RF_CONFIG is used for modification of the RF Configuration settings available in the EEPROM. There is no possibility to update the EEPROM data directly, updates have to make use of the UPDATE_RF_CONFIG command. Note that the command LOAD_RF_CONFIG configures parameters which are not accessible by registers, and configures additional parameters depending on the protocol setting (e.g. the waveshaping AWC). It is required to execute the command LOAD_RF_CONFIG for a specific protocol first, before any register settings for this protocol are changed. The parameter 0xFF has to be used if the corresponding configuration shall not be changed. Condition: Parameter 'Transmitter Configuration' must be in the range from 0x0 - 0x1C, inclusive. If the transmitter parameter is 0xFF, transmitter configuration is not changed. Field 'Receiver Configuration' must be in the range from 0x80 - 0x9C, inclusive. If the receiver parameter is 0xFF, the receiver configuration is not changed. If the condition is not fulfilled, an exception is raised. (1) UPDATE_RF_CONFIG allows updating the EEPROM content defining all protocol-specific configurations. For each protocol, a user-defined configuration can be defined. (2) LOAD_RF_CONFIG allows loading a protocol-specific configuration from EEPROM to registers as actual RF configuration. Fig 18. LoadRFConfig aaa-023693 PN5180 EEPROM UPDATE_RF_CONFIG A106 A212 NFC-GTM PN5180 REGISTERS LOAD_RF_CONFIG RF_CONTROL_TX_CLK TX_DATA_MOD TX_UNDERSHOOT_ CONFIG TX_OVERSHOOT_CON FIG RF_CONTROL_TX ANT_CONTROL |
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