ST25R3911B datasheet(57/116 Pages) STMICROELECTRONICS

Part #	ST25R3911B

Description	High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT

PDF	116 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1.3.3

Operation control register

Address: 02h

Type: RW

Table 21. Operation control register

Bit Name Default

Function

Comments(1)

1: Enables oscillator and regulator (Ready

mode)

rx_en

1: Enables Rx operation

rx_chn

0: Both, AM and PM, channels enabled

1: One channel enabled

In case only one Rx channel is enabled, selection is done by the Receiver

Configuration register 1 bit ch_sel

rx_man 0

0: Automatic channel selection

1: Manual channel selection

In case both Rx channels are enabled, it chooses the method of channel

selection, manual selection is done by the Receiver Configuration register

1 bit ch_sel

tx_en

1: Enables Tx operation

This bit is automatically set by NFC Field ON commands and reset in

NFC active communication modes after transmission is finished

1: Enables Wake-up mode

According to settings in Wake-Up Timer Control register

Not used

1. Default setting takes place at power-up only.

ST25R3911B

Registers

DS11793 - Rev 6

page 57/116

ST25R3911B Datasheet(PDF) 57 Page - STMicroelectronics