AS3911 datasheet(76/149 Pages) AMSCO

номер детали	AS3911

подробное описание детали	NFC Initiator / HF Reader IC

PDF	149 Pages

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производитель	AMSCO [ams AG]

домашняя страница	http://www.ams.com

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76 / 149 page

AS3911 – 76

ams Datasheet, Confidential: 2013-Oct [2-03]

A p pl i c at io n I n f o r m at i o n

Receiver Configuration Register 2

Figure 58:

Receiver Configuration Register 2

Note:

Default setting is set at power-up and after Set Default command.

Address 0Bh: Receiver Configuration Register 2

Type: RW

Bit

Name

Default

Function

Comments

7rx_lp

1: Low power receiver operation

6lf_op

0: Differential LF operation

1: LF input split (RFI1 to AM

channel, RFI2 to PM channel)

5lf_en

1: LF signal on receiver input

4agc_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)

1sqm_dyn

1: Automatic squelch activation

after end of Tx

Activated 18.88 μs after end of Tx,

terminated with Mask Receive timer

expire

pmix_cl

0: RFO

1: Internal signal

PM demodulator mixer clock source, in

single mode internal signal is always used

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