#Advanced NFC timings

Address : 023E (bank 2, register 3E)

Size : 4 bytes

Default : 00000000

#Content

#Byte 0 : Card protection timeout (seconds)

Use this parameter to shutdown the RF if a card remains in the field during a very long time. This is useful to protect the cards from overheating (since this may destroy the chip).

Remark : If set to 0 (default), the reader never stops the RF field while a card is present.

#Byte 1 : Min. time before restarting polling after a card removal event (10th of second, 0.0 to 2.55 s)

Use this parameter if the host system is unable to handle a new card immediately after the previous one.

Remark : If set to 0 (default), the reader doesn’t add a pause after a card removal.

#Byte 2 : Interval between LPCD pings (10th of second, 0.1 to 2.55s)

LPCD uses short pings (Dirac pulses) to monitor the RF environment without actually activating the RF field. This settings control the interval between pulses.

Remark : For convenience, 0 (default) maps to 250ms

#Byte 3 : Interval between pollings when LPCD is enabled (seconds, 1 to 254s)

Small tags may be unable to wake-up a reader that is using LPCD. Use the wake-up period to poll periodically, even if no LPCD event has been signaled.

Remark : For convenience, 0 (default) maps to 2500ms. Set to 255 to disable this feature.