V.92 AND V.34 ISOMODEM - Silicon Laboratories
Description
Si2494/39
V.
9 2 AND V.
3 4 I S O MODEM® WITH G LOBAL D A A
Features
Data modem formats ITU-T, Bell 300 bps up to 56 kbps V.
21,V.
22, V.
29 Fast Connect V.
44, V.
42, V.
42bis, MNP2-5 Automatic rate negotiation V.
92 PCM upstream V.
92 Quick connect V.
92 Modem on hold
Type I and II caller ID decode No external ROM or RAM required UART, SPI, or parallel interface Flexible clock options
Low-cost 32.
768 kHz oscillator 4.
915 MHz oscillator 27 MHz clock input Integrated DAA Over 6000 V capacitive isolation Parallel phone detect Globally-compliant line interface Overcurrent detection AT command set support SMS / MMS support Firmware upgradeable
Applications
Point-of-sale terminals Security
EEPROM interface Commercial or industrial
temperature range DTMF detection/generation Si3000 Voice Codec Interface
Hardware support for mic, speaker, and/or handset
Programmable voice filters, limiters, and sidetone
Supports TBR-38, TIA/EIA4790 and other voice standards
Voice pass through with compression Supports telephone answering machine, music on hold, voice menus, etc
Full-duplex speakerphone support Line echo cancellation Acoustic echo cancellation
Medical Remote monitoring
Description
The Si2494/39 ISOmodem is a full-featured ITU V.
92/V.
34-compliant modem that provides connect rates of up to 56 kbps, full-duplex, over the public switched telephone network (PSTN).
Offered as a chipset with the Si2494/39 system-side device and the Si3018 line-side device, the ISOModem utilizes Silicon Laboratories’ patented direct access arrangment (DAA) technology to provide a programmable telephone line interface with an unparalleled level of integration.
This compact solution eliminates the need for a separate DSP, modem controller, codec, transformer, relay, opto-isolators, clocking crystal, and 2-4 wire hybrid.
The addition of the Si3000 voice codec supports a voice handset and/or full-duplex speakerphone.
Voice pass...
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