PSB4860 Datasheet, PDF (171/250 Pages) Siemens Semiconductor Group – Digital Answering Machine with Full Duplex Speakerphone SAM EC

PSB 4860
3A_h AGC1
Automatic Gain Control 1
Detailed Register Description
15
COM
0
AG_INIT
COM
The parameter COM for a signal level L ([dB]) can be calculated by the following formula:

¹²⁸
+
10 ^{L------+----2-6--0-6---,---2---2-}
COM = _


10 ^{L------+----2-4--0-2---,---1---4-}
;L < -42,14 dB
;L > -42,14 dB
AG_INIT
In order to obtain an initial gain G ([db]) the parameter AG_INIT can be calculated by the
following formula:

¹²⁸
+
10 ^{G------+----2-1--0-8---,---0---6--}
AG_INIT = _


10 ^{G------–---2--6-0--,---0---2-}
;G < 6, 02 dB
;G > 6, 02 dB
Semiconductor Group
171
10.97