Filter
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AN93
Rev. 1.3 195
AT:U196,5000
OK
Set output limiter threshold gain.
AT:U197,2000
OK
Set input limiter threshold gain.
AT:U19C,2400
OK
Set AEC reference gain.
AT:U19D,1800
OK
Set AEC microphone gain.
AT:U19A,01E0
OK
Set AEC filter length.
AT:U19B,001F
OK
Set AEC adjustable delay.
AT:U04F,01F4
OK
Set flash hookswitch period.
AT:U156,FF10,FFA2,FFD7,FF35,FEF3,FE68,FB7E
OK
Set Handset Transmit FIR coefficients.AT:U15D,F90C,FDDF,091D,4F51,091D,FDDF,F90C
OK
AT:U164,FB7E,FE68,FEF3,FF35,FFD7,FFA2,FF10
OK
AT:U16B,0041,00B1,00AA,0001,FF92,0042,0183
OK
Set Handset Receive FIR coefficients.AT:U172,0165,FEC0,FB05,3940,FB05,FEC0,0165
OK
AT:U179,0183,0042,FF92,0001,00AA,00B1,0041
OK
AT:U1A0,0000,0000,0000,0000,0000,0000,0000
OK
Set Speakerphone Transmit FIR coeffi-
cients.
AT:U1A7,0000,0000,0000,0000,0000,0000,0000
OK
AT:U1AE,0000,0000,0000,0000,0000,0000,4000
OK
AT:U1B5,0173,0273,045A,043B,0121,FD54,FE41
OK
Set Speakerphone Receive FIR coeffi-
cients.
AT:U1BC,0197,0543,FD03,30D6,FD03,0543,0197
OK
AT:U1C3,FE41,FD54,0121,043B,045A,0273,0173
OK
AT:U72,0108
OK
Configure Si3000 Register 1:
Disable speaker driver
Enable line output driver
Disable telephone instrument driver
Disable MBIAS output
AT:U72,05D7
OK
Configure Si3000 Register 5:
20 dB Line In gain
Enable Line In
20 dB MIC input gain
Mute MIC input
Mute telephone instrument input
Enable IIR filter
AT:U72,065E
OK
Configure Si3000 Register 6:
0 dB RX PGA gain
Enable Line Out
Disable telephone instrument output
Table 119. Initialization Sequence (Continued)