Silicon Laboratories SI2494/39, SI2493/57/34/15/04 manual Rev 195

		AN93
Table 119. Initialization Sequence (Continued)
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
AT:U15D,F90C,FDDF,091D,4F51,091D,FDDF,F90C	OK	Set Handset Transmit FIR coefficients.
AT:U164,FB7E,FE68,FEF3,FF35,FFD7,FFA2,FF10	OK
AT:U16B,0041,00B1,00AA,0001,FF92,0042,0183	OK
AT:U172,0165,FEC0,FB05,3940,FB05,FEC0,0165	OK	Set Handset Receive FIR coefficients.
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-
AT:U1A7,0000,0000,0000,0000,0000,0000,0000	OK
		cients.
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-
AT:U1BC,0197,0543,FD03,30D6,FD03,0543,0197	OK
		cients.
AT:U1C3,FE41,FD54,0121,043B,045A,0273,0173	OK
		Configure Si3000 Register 1:
	OK	Disable speaker driver
AT:U72,0108		Enable line output driver
		Disable telephone instrument driver
		Disable MBIAS output
		Configure Si3000 Register 5:
		20 dB Line In gain
	OK	Enable Line In
AT:U72,05D7		20 dB MIC input gain
		Mute MIC input
		Mute telephone instrument input
		Enable IIR filter
		Configure Si3000 Register 6:
AT:U72,065E	OK	0 dB RX PGA gain
		Enable Line Out
		Disable telephone instrument output

Rev. 1.3 195