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PN 7150 Best settings for ISO15693

Question asked by Pejman Mansouri on Aug 5, 2019
Latest reply on Aug 7, 2019 by Jonathan Iglesias

PN 7150 Best settings for ISO15693

 

I have designed a NFC reader which reads a ISO15693 TAG I am trying to find the best settings for SW4325\NXP-NCI_MCUXpressoExample_V1.3\NXP-NCI_LPC11Uxx_example\NfcLibrary\inc\ NFc.settings.

I would like to fine-tune the configuration registers for PN7150 for ISO 15693. There is no information for these settings regarding receiver gain and thresholds, baud rate setting for ISO15693.What are 0x44, 0x22, 0x00? 

0xA0, 0x0D, 0x04, 0x22, 0x44, 0x22, 0x00,              /* RF_CLIF_CFG_TECHNO_I_RX15693 CLIF_ANA_RX_REG */

Does ISO15693 use the following settings in conjunction with above parameters? if it does, then at least I can change the receiver gain from 40dB to 57dB

0xA0, 0x0D, 0x06, 0x06, 0x44, 0x01, 0x90, 0x03, 0x00,  /* RF_CLIF_CFG_TARGET CLIF_ANA_RX_REG */

 

The antenna dimensions are 30mm x 18mm, 6 turns on the reader and the TAG. The TAG and reader antenna are 10 mm apart. I would like to reduce the baud rate, maximize the power to the TAG and increase the sensitivity of the reader. My preferred setting are;

1. ASK 100% for VCD 2. PPM Coding (1 out of 4 or 1 out of 256, which one is more robust? )

3. Bandwidth is "Low”. In other words, only the TAG ID is read by the NFC reader so I would like to reduce the baud rate to the minimum allowed with ISO15693 protocol to increase reliability and distance.

The setting for ISO15693 in latest AN11755 is different from SW4325\NXP-NCI_MCUXpressoExample_V1.3\NXP-NCI_LPC11U6x_example\NfcLibrary\inc Nfc_settings. Which one provides better performance?

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