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IDT - QUAD NON-PROGRAMMABLE PCM CODEC

Numéro de référence 821024
Description QUAD NON-PROGRAMMABLE PCM CODEC
Fabricant IDT 
Logo IDT 





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821024 fiche technique
QUAD NON-PROGRAMMABLE
PCM CODEC
821024
DATASHEET
FEATURES
4 channel CODEC with on-chip digital lters
Selectable A-law or μ-law companding
Master clock frequency selection: 2.048 MHz, 4.096 MHz or
8.192 MHz
- Internal timing automatically adjusted based on MCLK and frame
sync signal
Separate PCM and master clocks
Single PCM port with up to 8.192 MHz data rate (128 time slots)
Transhybrid balance impedance hardware adjustable via external
components
Transmit gains hardware adjustable via external components
Low power +5.0 V CMOS technology
+5.0 V single power supply
Package available: 32 pin PLCC, 44 pin TQFP
DESCRIPTION
The IDT821024 is a single-chip, four channel PCM CODEC with on-
chip lters. The device provides analog-to-digital and digital-to-analog
conversions and supports both a-law and μ−law companding. The digital
lters in IDT821024 provides the necessary transmit and receive ltering for
voice telephone circuit to interface with time-division multiplexed systems.
All of the digital lters are performed in digital signal processors operating
from an internal clock, which is derived from MCLK. The xed lters set
the transmit and receive gain and frequency response.
In the IDT821024 the PCM data is transmitted to and received from the
PCM highway in time slots determined by the individual Frame Sync signals
(LFoSnRg naannddSFhSoXrtn,FwrahmereeSny=nc1-m4)oadtersataerse
from 256 KHz to
available in the
8.192 MHz.
IDT821024.
Both
The IDT821024 can be used in digital telecommunication applications
such as PBX, Central Ofce Switch, Digital Telephone and Integrated
Voice/Data Access Unit.
FUNCTIONAL BLOCK DIAGRAM
821024 REVISION A JUNE 25, 2014
1 ©2014 Integrated Device Technology, Inc.

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