SI2415-D-FS Silicon Laboratories Inc, SI2415-D-FS Datasheet - Page 212
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SI2415-D-FS
Manufacturer Part Number
SI2415-D-FS
Description
IC ISOMODEM SYSTEM-SIDE 16SOIC
Manufacturer
Silicon Laboratories Inc
Specifications of SI2415-D-FS
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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AN93
7.6.4.3. Speakerphone Transition
A SP Button On Event will trigger the transition to Speakerphone system voice mode. Based upon the point at
which the event is received, the voice driver will vector to a user answer state to gracefully exit the TAM PSTN
mode.
7.6.4.4. Handset Transition
A Handset Raised Event will trigger the transition to Handset system voice mode. Based upon the point at which
the event is received, the voice driver will vector to a user answer state to gracefully exit the TAM PSTN mode.
7.7. Speakerphone
7.7.1. Overview
The Si2494/39 speakerphone consists of the following function components as shown in Figure 29 on page 188:
7.7.2. Simplex Speakerphone
Simplex Speakerphone (SSP) is a special case of speakerphone operation. Like Speakerphone, it allows two-way
hands-free voice communication over a telephone line, but SSP allows communication in only one direction at a
time. The direction of voice transmission can be done automatically, based on the presence of local and remote
speech at the modem, or manually using a push-to-talk function. Simplex and full-duplex speakerphone modes are
mutually exclusive. SSP supports the Ademco Contact ID and SIA security protocols. It also supports DTMF
generation and detection. DTMF detection is enabled only during +VTR. Commonality in control registers between
SSP and full duplex facilitates programming across platforms. SSP supports Type II Caller ID, but Caller ID is
disabled during +VRX. A DLE<R> event report is sent to the DTE when a SAS Call Waiting tone is detected. If a
CAS tone is detected, the modem mutes the Si3000 speaker while Caller ID Type II data are being captured. It
then reports Caller ID info to the DTE as a DLE-shielded complex event. This happens automatically, without the
need for an AT+VCIDR? command.
1. The microphone sample is taken after U19D; the speaker sample is taken after U19C. However, the scale
2. To mute the local talker, set U199 [1] to 1 and MUTE_DAA_TO_MIXER=1. To mute the remote talker, set
212
Table 132. TAM PSTN Interrupted Answer – OGM Playback with DTMF Menu Entry (Continued)
Host to Modem Commands / Data
Acoustical echo canceller (AEC)
Acoustical echo suppressor (AES)
AEC double-talk detector (DTD)
Line echo canceller (LEC)
Howling controller (HC)
High-pass filter (HPF)
factors are set to 1.0 internally, so U19C and U19D will not affect the SSP.
U199 [3] to 1 and MUTE_MIXER_TO_DAA to 1.
[Playback Menu Options]
AT+VTS=[500,0,100]
Modem to Host Result
Codes/Data
Rev. 1.3
OK
Play special administrator tone.
Using the +VTX command, the voice driver
can playback a menu and monitor DTMF
digit events to perform operations
remotely.
Local Modem Actions
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