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The Si3052 is an integrated silicon direct access arrangement (DAA) with a
peripheral component interface (PCI) that offers global compliance through a
programmable telephone line interface.
The chipset (Si3052 and Si3018) is fully programmable for AC and DC
termination, ringer impedance and ringer threshold and it supports billing
tone detection, polarity reversal and pulse dialing, enabling it to meet the
most stringent global PTT requirements. The Si3052 offers a number of enhanced
features including ring validation, integrated call progress, speaker driver,
low-cost 32.768 kHz clock crystal, internal PnP IDs and system lock-up
protection. The Si3052 contains a 32-bit, 33 MHz, PCI 2.3 compliant interface
and supports PCI Power Management Interface (PPMI) 1.1 with wake-on-ring.
Like other Silicon Laboratories DAA products, the Si3052 offers the highest
level of integration by replacing the codec, isolation transformer, relay,
opto-isolators, 2–4 wire hybrid and DC holding circuit with one 64-pin TQFP,
one 16-pin SOIC and minimal external components.
Si3052 Block Diagram
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