PN 7150 Best settings for ISO15693

[pejmanmansouri]

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?

[Jonathan_Iglesias]

Dear Pejman Mansouri, Hope you are doing great, please find the following information let me know if this helps you, if you need me to be more clear or have more questions please let me know.

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 */

5. The values you mention are the Register Value,  in this case as you can see in the appnote 11755 section 5.3.1. this follows the TLV structure which stands for Tag,  length , value.

                The  0x44, 0x22, 0x00 are part of the value of the TLV, I would recommend to use the UM10936 with the  AN 11755 since both reference between them.

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 */

5. Yes as you can see in the section 5.5.3.1  the explanation of the CLIF_ANA_RX_REG

This register is explained here I would recommend to check the values for the dB you require.

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.

   A. For this please  refer to  the standard minimum rate values in section 8.3 Data rates of 15693-2  also for the configuration mention above I would recommend the one in our data sheet

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?

This question I would have to check  it.

BR

Jonathan