Si2457
Si2457 is ISOMODEM manufactured by Skyworks Solutions.
Features
- This data sheet applies to Si2457/34/15/04 Revision D
- 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
- 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 k Hz oscillator
- 4.915 MHz oscillator
- 27 MHz clock input
- Integrated DAA
- Over 6000 V capacitive isolation
- Parallel phone detect
- Globally-pliant line interface
- Overcurrent detection
- AT mand set support
- SMS / MMS support
- Firmware upgradeable
- EEPROM interface
- Lead-free, Ro HS-pliant packages
- mercial or industrial temperature range
- DTMF detection/generation
Applications
- Set-top boxes
- Point-of-sale terminals
- Text / video telephones
- Digital video recorder
- Digital televisions
- Remote monitoring
Description
The ISOmodem® family of products is a plete modem ranging in speed from 56,000 bps to 2400 bps. Offered as a chipset with the Si2457, Si2434, Si2415, or Si2404 system-side device and the Si3018/10 line-side device, the ISOmodem utilizes Skyworks Solutions’ patented direct access arrangement (DAA) technology to provide a programmable telephone line interface with an unparalleled level of integration. These pact solutions eliminate the need for a separate DSP, modem controller, codec, transformer, relay, opto-isolators, clocking crystal, and 2-4 wire hybrid. Available with a system-side packaging option of either a 16-pin SOIC or a 24-pin TSSOP, these devices are ideal for embedded modem applications due to their flexibility, small footprint, and minimal external ponent count.
System Block Diagram
Host CPU
Host Interface
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