AS3911 datasheet(78/149 Pages) AMSCO

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AS3911 – 78

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 4

Figure 60:

Receiver Configuration Register 4

Note(s) and/or Footnote(s):

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

2. Sending of direct command Reset Rx Gain is necessary to load the value of this register into AGC, Squelch, and RSSI block.

Address 0Dh: Receiver Configuration Register 4

(2nd and 3rd stage gain settings)

Type: RW

Bit

Name

Default

Function

Comments

rg2_am3

AM channel: Gain reduction in

second and third stage and

digitizer

Values from 0h to Ah are used.

Other values are not used.

Settings 1h to 4h reduce gain

by increasing the digitizer

window in 3dB steps, values

from 5h to Ah additionally

reduce the gain in 2nd and 3rd

gain stage also in 3 dB steps.

rg2_am2

rg2_am1

rg2_am0

rg2_pm3

PM channel: Gain reduction in

second and third stage and

digitizer

Values from 0h to Ah are used.

Other values are not used.

Settings 1h to 4h reduce gain

by increasing the digitizer

window in 3dB steps, values

from 5h to Ah additionally

reduce the gain in 2nd and 3rd

gain stage also in 3 dB steps.

rg2_pm2

rg2_pm1

rg2_pm0

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