SI3050 Datasheet, PDF(1/112 Page) Silicon Laboratories – PCM highway data interface law A-law companding SPI control interface GCl interface

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SI3050 Datasheet, PDF (1/112 Pages) Silicon Laboratories – PCM highway data interface law A-law companding SPI control interface GCl interface

Si3050 +

Si3018/19

GLOBAL VOICE DAA

Features

ï® PCM highway data interface

ï® Âµ-law/A-law companding

ï® SPI control interface

ï® GCI interface

ï® 80 dB dynamic range TX/RX

ï® Line voltage monitor

ï® Loop current monitor

ï® +6 dBm or +3.2 dBm TX/RX level

mode

ï® Parallel handset detection

ï® 3 ÂµA on-hook line monitor current

ï® Overload detection

ï® Programmable line interface

ï¬ï AC termination

ï¬ï DC termination

ï¬ï Ring detect threshold

ï¬ï Ringer impedance

ï® TIP/RING polarity detection

ï® Integrated codec and 2- to 4-wire

analog hybrid

ï® Programmable digital hybrid for

near-end echo reduction

ï® Polarity reversal detection

ï® Programmable digital gain in 0.1 dB

increments

ï® Integrated ring detector

ï® Type I and II caller ID support

ï® Pulse dialing support

ï® 3.3 V power supply

ï® Daisy-chaining for up to 16 devices

ï® Greater than 5000 V isolation

ï® Patented isolation technology

ï® Ground start and loop start support

ï® Available in Pb-free RoHS-compliant

packages

Applications

ï® DSL IADs

ï® VoIP gateways

ï® PBX and IP-PBX systems

ï® Voice mail systems

Description

The Si3050+Si3018/19 Voice DAA chipset provides a highly-programmable and

globally-compliant foreign exchange office (FXO) analog interface that is ideal for

DSL IADs, PBXs, IP-PBXs, and VoIP gateway products. The solution implements

Silicon Laboratories' patented isolation capacitor technology, which eliminates the

need for costly isolation transformers, relays, or opto-isolators, while providing

superior surge immunity for robust field performance. The Voice DAA is available

in one 20-pin TSSOP (Si3050) and one 16-pin TSSOP/SOIC (Si3018/19) and

requires minimal external components. The Si3050 interfaces directly to standard

telephony PCM interfaces.

Functional Block Diagram

SCLK

SDI

SDO

SDI THRU

PCLK

DTX

DRX

FSYNC

RGDT

TGD

TGDE

RESET

AOUT/INT

Si3050

Control

Data

Interface

Line

Data

Interface

Isolation

Interface

Control

Logic

Si3018/19

Isolation

Interface

Hybrid, AC

and DC

Terminations

Ring Detect

Off-Hook

DCT

VREG

VREG2

DCT2

DCT3

RNG1

RNG2

QE2

Ordering Information

See page 102.

Pin Assignments

Si3050

SDO 1

SDI 2

CS 3

FSYNC 4

PCLK 5

DTX 6

DRX 7

RGDT 8

AOUT/INT 9

RG 10

20 SDITHRU

19 SCLK

18 GND

17 VDD

16 VA

15 C1A

14 C2A

13 RESET

12 TGDE

11 TGD

Si3018/19

QE 1

DCT 2

RX 3

IB 4

C1B 5

C2B 6

VREG 7

RNG1 8

16 DCT2

15 IGND

14 DCT3

13 QB

12 QE2

11 SC

10 VREG2

9 RNG2

US Patent# 5,870,046

US Patent# 6,061,009

Other Patents Pending

Rev. 1.31 5/09

Si3050 + Si3018/19

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