AS3911 datasheet(82/159 Pages) AMSCO

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[v2-11] 2016-Jun-13

AS3911 − Application Information

Receiver Configuration Register 3

Figure 62:

Receiver Configuration Register 3

Note(s):

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

Address 0Ch: Receiver Configuration Register 3 (1st stage

gain settings)

Type: RW

Bit

Name

Default

Function

Comments

7rg1_am2

Gain reduction/boost in first gain

stage of AM channel.

0: Full gain

1-6: Gain reduction 2.5 dB per

step (15 dB total)

7: Boost +5.5 dB

6rg1_am1

5rg1_am0

4rg1_pm2

Gain reduction/boost in first gain

stage of PM channel.

0: Full gain

1-6: Gain reduction 2.5 dB per

step (15 dB total)

7: Boost +5.5 dB

3rg1_pm1

2rg1_pm0

1lim

1: Clip output of 1st and 2nd

stage

Signal clipped to 0.6 V, preset

for NFCIP-1 active

communication mode

0rg_nfc

1: Forces gain reduction in 2nd

and 3rd gain stage to -6 dB and

maximum comparator window

Preset for NFCIP-1 active

communication mode

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