ST25R3911B datasheet(65/116 Pages) STMICROELECTRONICS

Part #	ST25R3911B

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

PDF	116 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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65 / 116 page

1.3.12

Receiver configuration register 2

Address: 0Bh

Type: RW

Table 37. Receiver configuration register 2

Bit

Name

Default

Function

Comments(1)

rx_lp

1: Low power receiver operation

lf_op

0: Differential LF operation

1: LF input split (RFI1 to AM channel, RFI2 to PM channel)

lf_en

1: LF signal on receiver input

agc_en

1: AGC is enabled

agc_m

0: AGC operates on first eight sub-carrier pulses

1: AGC operates during complete receive period

agc_alg

0: Algorithm with preset is used

1: Algorithm with reset is used

Algorithm with preset is recommended for protocols with

short SOF (like ISO14443A fc/128)

sqm_dyn 1

1: Automatic squelch activation after end of Tx

Squelch is started 18.88 s after end of Tx, and stopped

when Mask Receive Timer expires

pmix_cl

0: RFO

1: Internal signal

PM demodulator mixer clock source, in single mode

internal signal is always used

1. Default setting takes place at power-up and after set default command.

ST25R3911B

Registers

DS11793 - Rev 6

page 65/116

ST25R3911B Datasheet(PDF) 65 Page - STMicroelectronics

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