RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
8-4
1070
START AGC
AGCSEL(14:6)=1?
RMS ENERGY
CALCULATION
ENUPDT(14:5)=1
?
Yes
RMS
ENERGY > AGC
ADAPTATION
THRESHOLD?
No
G=G+(E-Eref)SR
(see note)
No
DCVOX(14:5)=1?
VOX(17:3)=1?
No
No
Note:
G = AGC Gain
E = RMS Energy
Eref = AGC Energy Reference Level
SR = AGC Slew Rate
RMS
ENERGY > AGC
ADAPTATION
THRESHOLD
?
Yes
Yes
ADVANCED
GAIN
ADAPTATION
No
VOICE
CLASSIFIER
UPDATE AGC
GAIN?
Yes
No
No
APPLY AGC GAIN
TO INPUT
Yes
Yes
END
1070F8-3
Yes
Figure 8-2. AGC Operation
Summary of Contents for RFX144V24-S23
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