Rev. 1.4 12/10 Copyright © 2010 by Silicon Laboratories Si3000
Si3000
VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE
Features
Complete voice codec solution includes the following:
Applications
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 he
adphones. 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
a
v
ailable in a 16-pin small outline package (SOIC).
Functional Block Diagram
84 dB ADC Dynamic Range
84 dB DAC Dynamic Range
4–12 kHz Sample Rates
30 dB Microphone Pre-Amp
Programmable Input Gain/
Attenuation: –34.5 dB to 12 dB
Programmable Output Gain/
Attenuation: –34.5 dB to 12 dB
Support for 32 Headphones
3:1 Analog Input Mixer
3.3–5.0 V Power Supply
Direct Serial Interface to DSPs
Direct Connection to Si303x/44/56,
serial interface DAA chipsets
Low profile 16-Pin SOIC Package
RoHS-compliant package
available
Modem Voice Channel (DSVD)
Telephony
Speech Processing
General Purpose Analog I/O
Companion chip for FDX
ISOmodems with voice features
Digital
Interface
Prog Gain/
Attenuator
ADC
DAC
Handset
Hybrid
Headphone
Driver
High Pass Filter
0/+10/+20/+30 dB
0/+10/+20 dB
0/–6/–12/–18 dB
0/–6/–12/–18 dB
MBIAS
MIC
LINEI
HDST
SPKRR
SPKRL
LINEO
MCLK
SCLK
FSYNC
SDI
SDO
RESET
Prog Gain/
Attenuator
Si3000
Ordering Information:
See page 29.
Pin Assignments
Si3000
2
1
3
4
5
6
7
8
15
16
14
13
12
11
10
9
SPKRR
MBIA S
HDST
SDI
SDO
MCLK
SCLK
LINEO
GND
V
A
V
D
LINEI
MIC
RESET
SPKRL
FSY NC
