Adapticom offers designs utilizing the SiLabs Si3220 / 25 Dual ProSLIC™

Si3220 / 25 Product Description:

The Dual ProSLIC is a low power CMOS solution that integrates two SLICs and two codecs into a tiny footprint to provide a small and low cost dual-channel analog telephone interface. Fully programmable parameters allow global compliance using a single hardware solution and on-chip functions such as DTMF generation/decoding, FSK caller ID generation, and modem tone detection help eliminate external DSP requirements. Integrated test and line monitoring allows remote subscriber loop and line card diagnostics without centralized test equipment. The Si3220 provides programmable internal ringing generation for space-constrained CPE applications, and the Si3225 includes internal ringing relay drivers and ring trip detection to minimize external components in traditional access applications. The Si3220 and Si3225 operate from a single 3.3 V or 5 V supply and interface directly to standard PCM/SPI or GCI digital interfaces; all high voltage functions are performed using the Si3200 linefeed interface IC. The Si3220 and Si3225 are packaged in a 64-pin TQFP, and the Si3200 is packaged in a thermally-enhanced 16-pin SOIC.

Si3220 / 25 Features:

Performs all battery, overvoltage, ringing, supervision, coding, hybrid, and test (BORSCHT) functions per LSSGR and ITU standards
Ideal for applications up to 18,000 feet
Software programmable parameters for global compliance with one hardware design:
Constant current loop feed (18--45 mA)
Two-wire AC impedance
Transhybrid balance
Ringing frequency, amplitude, cadence
Loop closure and ring trip thresholds
Ground key detection threshold
Low standby power consumption: <50 mW
Integrated subscriber line diagnostics and multiple analog/digital loopback test modes
Internal ringing up to 65V RMS (Si3220)
Programmable ringing relay control and ring trip detection for centralized ringing architectures (Si3225)
Loop start and ground start support
Automatic dual battery switching
DTMF generation and decoding
Modem/fax tone detection
FSK (caller ID) tone generation
12/16 kHz pulse metering (Si3220)
PCM/SPI or GCI digital interfaces

Applications:

CO/DLC line cards
PBX/key telephone systems
Cable telephony systems
Voice over IP/Voice over DSL systems
Pair gain remote terminals

PDF product description from SiLabs: http://www.silabs.com/pdfs/Si3220_PB.pdf
Comments to:

webmaster@adapti.com