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The Dual ProSLIC is a low power CMOS solution that integrates two SLICs and
two codecs into a tiny footprint to provide the smallest and lowest 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 Block Diagram
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