ST25R3916 datasheet(101/157 Pages) STMICROELECTRONICS

101 / 157 page

DS12484 Rev 4

101/157

ST25R3916/7

Application information

156

4.5.37

Passive target interrupt register

Address: 1Dh

Type: R

Table 65. Passive target interrupt register(1)

Bit

Name

Default

Function

Comments

I_ppon2

PPON2 field on waiting timer

interrupt

I_sl_wl

IRQ for passive target slot

number water level

Sent if four unused slot numbers (TSN) remain in

PT_memory.

I_apon

IRQ due to active P2P field on

event

Sent after RF collision avoidance, if there was no

collision and field was turned on.

I_rxe_pta

IRQ due to end of receive, the

device is handling the response

Sent in passive target mode when NFC-A

anti-collision or NFC-F SENSF_RES is

automatically sent (MCU action required).

I_wu_f

NFC 212/424kb/s passive target

‘Active’ interrupt

Sent after NFC 212/424 kb/s automatic response

to SENSF_REQ was sent.

RFU

I_wu_a*

Passive target Active* interrupt

Sent when Active* state is reached.

I_wu_a

Passive target Active interrupt

Sent when Active state is reached.

1. After register has been read, its content is set to 0.

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