SI3000 Datasheet, PDF(1/34 Page) List of Unclassifed Manufacturers – VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE

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SI3000 Datasheet, PDF (1/34 Pages) List of Unclassifed Manufacturers – VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE

Si3000

VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE

Features

Complete voice codec solution includes the following:

ï® 84 dB ADC Dynamic Range ï® Support for 32 ï Headphones

ï® 84 dB DAC Dynamic Range ï® 3:1 Analog Input Mixer

ï® 4â12 kHz Sample Rates

ï® 3.3â5.0 V Power Supply

ï® 30 dB Microphone Pre-Amp ï® Direct Serial Interface to DSPs

ï® Programmable Input Gain/ ï® Direct Connection to Si303x/44/56,

Attenuation: â34.5 dB to 12 dB serial interface DAA chipsets

ï® Programmable Output Gain/ ï® Low profile 16-Pin SOIC Package

Attenuation: â34.5 dB to 12 dB ï® RoHS-compliant package

available

Applications

ï® Modem Voice Channel (DSVD) ï® Speech Processing

ï® Telephony

ï® General Purpose Analog I/O

ï® Companion chip for FDX

ISOmodems with voice features

Description

The Si3000 is a complete voice band audio codec solution that offers high

integration by incorporating programmable input and output gain/

attenuation, a microphone bias circuit, handset hybrid circuit, and an

output drive for 32 ï headphones. The Si3000 can be connected directly

to the Si3034, Si3035, Si3044, and Si3056 North American and

international DAA chipsets through their daisy-chaining serial interface. It

also serves as a companion chip to a FAT ISOmodem chipset with voice

features, providing hardware support for a handset and speaker phone.

The device operates from a single 3.3 to 5 V power supply and is

available in a 16-pin small outline package (SOIC).

Functional Block Diagram

Ordering Information:

See page 29.

Pin Assignments

Si3000

SPKRR 1

MBIAS 2

HDST 3

SDI 4

SDO 5

FSYNC 6

MCLK 7

SCLK 8

16 SPKRL

15 LINEO

14 GND

13 VA

12 VD

11 LINEI

10 MIC

9 RESET

MCLK

SCLK

FSYNC

SDI

SDO

RESET

Digital

Interface

Si3000

0/+10/+20/+30 dB

Prog Gain/

Attenuator

Prog Gain/

Attenuator

ADC

DAC

0/+10/+20 dB

Handset

Hybrid

0/â6/â12/â18 dB

Headphone

Driver

0/â6/â12/â18 dB

MBIAS

MIC

LINEI

HDST

SPKRR

SPKRL

LINEO

Rev. 1.4 12/10

Si3000

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