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NTP53X2 Datasheet(PDF) 103 Page - NXP Semiconductors |
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NTP53X2 Datasheet(HTML) 103 Page - NXP Semiconductors |
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103 / 133 page  NXP Semiconductors NTP53x2 NTAG 5 link - NFC Forum-compliant I2C bridge NTP53x2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved. Product data sheet Rev. 3.3 — 3 July 2020 COMPANY PUBLIC 544533 103 / 133 • REGDAT: 8-bit register data to read/write • STOP: Stop condition as defined in Section 8.3.1.1.2 aaa-035478 Read Data HOST START SL_AD BL_AD1 W A SLAVE Write Data HOST SLAVE START SL_AD W BL_AD0 A A REGA SL_AD R A STOP A BL_AD1 A BL_AD0 A REGA A MASK A REGDATA A STOP A START REGDATA STOP A/N Figure 11. READ REGISTER and WRITE REGISTER command 8.3.1.5 Error Handling In case of any detected error, NTAG 5 link in slave mode responds with a NACK: • Memory Write – EEPROM generated on the fourth data byte if the block is not writable – SRAM generated on the first byte if the block is not writable – Arbiter locked to NFC interface, or – EEP cycle ongoing, or – I2C interface disabled generate on block address BL_AD0 • Memory Read – EEPROM/SRAM returned data will be FFh if the access is to restricted region – Arbiter locked to NFC interface, or – EEP cycle ongoing, or – I2C interface disabled generate on block address BL_AD0 • Register Access Registers are always accessible. NACK will only be generated: – DATA NACK due to register write command to trigger system reset – NACK for register read/write command on BL_AD0 if I2C interface is disabled 8.3.2 Event detection The event detection feature provides the capability to trigger an external device (e.g., µController) or switch on the connected circuitry by an external power management unit depending on activities on the NFC interface. On top this active low pin can be used as one of the two possible PWM channels to offer I2C and PWM functionality. As the event detection pin functionality is operated via NFC field power, VCC supply for the IC itself is only required when ED pin is used as PWM channel. NOTE: In some cases VOUT pin might be used as field detection trigger. |
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