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PSB21384 Datasheet(PDF) 7 Page - Infineon Technologies AG

Part # PSB21384
Description  Siemens Codec with S/T Transceiver
Download  270 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

PSB21384 Datasheet(HTML) 7 Page - Infineon Technologies AG

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PSB 21381/2
PSB 21383/4
Page
Data Sheet
2001-03-12
Table of Contents
4.2.1
Transmit Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
4.2.2
Receive Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
4.2.3
Programmable Coefficients for Transmit and Receive . . . . . . . . . . . . .124
4.3
Tone Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
4.3.1
Four Signal Generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
4.3.2
Sequence Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
4.3.3
Control Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
4.3.4
Tone Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
4.3.5
Tone Level Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
4.3.6
DTMF Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
4.4
Speakerphone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
4.4.1
Attenuation Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
4.4.2
Speakerphone Test Function and Self Adaption . . . . . . . . . . . . . . . . . .136
4.4.3
Speech Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
4.4.3.1
Background Noise Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
4.4.3.2
Signal Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
4.4.4
Speech Comparators (SC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139
4.4.4.1
Speech Comparator at the Acoustic Side (SCAE) . . . . . . . . . . . . . . .139
4.4.4.2
Speech Comparator at the Line Side (SCLE) . . . . . . . . . . . . . . . . . .142
4.4.4.3
Automatic Gain Control of the Transmit Direction (AGCX) . . . . . . . .144
4.4.5
Automatic Gain Control of the Receive Direction (AGCR) . . . . . . . . . . .147
4.4.6
Speakerphone Coefficient Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
4.5
Controlled Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
4.6
Voice Data Manipulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
4.7
Test Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
4.8
Programming of the Codec
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
4.8.1
Indirect Programming of the Codec (SOP, COP, XOP) . . . . . . . . . . . .155
4.8.1.1
Description of the Command Word (CMDW) . . . . . . . . . . . . . . . . . . .156
4.8.2
Direct Programming of the Codec . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158
4.8.2.1
CRAM Back-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158
4.8.3
Reference Tables for the Register and CRAM Locations . . . . . . . . . . .160
5
Clock Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
5.1
Jitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
5.1.1
Jitter on IOM-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
5.1.2
Jitter on S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
5.1.3
Jitter on MCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
6
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
6.1
Reset Source Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
6.2
External Reset Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
6.3
Software Reset Register (SRES) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
6.4
Pin Behavior during Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173


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