SI3000 データシートの表示（PDF） - Unspecified
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SI3000 Datasheet PDF : 36 Pages
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Si3000
VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE
Features
Complete voice codec solution includes the following:
! 84 dB ADC Dynamic Range
! 84 dB DAC Dynamic Range
! 4–12 kHz Sample Rates
! 30 dB Microphone Pre-Amp
! Programmable Input Gain/
Attenuation: –36 dB to 12 dB
! Programmable Output Gain/
Attenuation: –36 dB to 12 dB
! Support for 32 Ω Headphones
! 3:1 Analog Input Mixer
! 3.3–5.0 V Power Supply
! Direct Interface to DSPs
! Direct Connection to Si3034,
Si3035, and Si3044 ISOcap™ DAA
! Low profile 16 Pin SOIC Package
Applications
! Modem Voice Channel (DSVD) ! Speech Processing
! Telephony
! General Purpose Analog I/O
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 Ω headphones. The Si3000 can be connected directly
to the Si3034, Si3035, and Si3044 ISOcap North American and
international DAA chipsets through its daisy-chaining serial interface. 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
MCLK
SCLK
FSYNC
SDI
SDO
RESET
Si3000
Digital
Interface
Prog Gain/
Attenuator
ADC
Prog Gain/
Attenuator
DAC
0/+10/+20/+30 dB
0/+10/+20 dB
Handset
Hybrid
0/–6/–12/–18 dB
Headphone
Driver
0/–6/–12/–18 dB
MBIAS
MIC
LINEI
HDST
SPKRR
SPKRL
LINEO
Ordering Information:
See page 30.
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
Rev. 1.1 6/00
Copyright © 2000 by Silicon Laboratories
Si3000-DS11
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