SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 193
SI2493-D-FS
Manufacturer Part Number
SI2493-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2493-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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AN93
7.3.3.5. TAM PSTN
This mode is used to answer an incoming call with OGM playback and ICM recording. The caller may perform local
TAM operations (i.e. record OGM, review ICM) via remote DTMF control. The modem is off-hook routing audio
between the DAA and the DTE interface; however, audio is also available at the Si3000 (via UB5 path) so call
screening is possible via the speaker (LINEO) while the microphone is muted. The modem voice path is configured
for half-duplex audio with the speakerphone algorithm disabled. Side tone is disabled. Handset TX/RX coefficients
are applied. The Si3000 is using the LINEI and LINEO signals with speakerphone gain settings. This mode is
supported by the Si2418/29/36/38 parts.
TAM
Initialize
Handset
TAM
Hands-Free
TAM
PSTN
Handset
Speakerphone
Figure 31. System Voice Modes
Rev. 1.3
193
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