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IDT821064 Datasheet

  • IDT821064

  • QUAD PROGRAMMABLE PCM CODEC WITH GCI INTERFACE

  • 482.73KB

  • IDT

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QUAD PROGRAMMABLE PCM CODEC
WITH GCI INTERFACE
FEATURES
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IDT821064
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4 channel CODEC with on-chip digital filters
Software selectable compressed (A/碌-law) or linear code con-
version
Meets ITU-T G.711 - G.714 requirements
Programmable digital filter adapting to system demands:
-
AC impedance matching
- Transhybrid balance
- Frequency response correction
- Gain setting
GCI (IOM-2) control interface
Broadcast mode for coefficient setting
7 SLIC signaling pins (including 2 debounced pins) per channel
Fast hardware ring trip mechanism
Two programmable tone generators per channel for testing,
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ringing and DTMF generation
FSK generator
Two programmable chopper clocks
Master clock frequency selectable: 2.048 MHz or 4.096 MHz
Advanced test capabilities
-
3 analog loop back tests
- 5 digital loop back tests
- Level metering function
High analog driving capability (300鈩?AC )
TTL and CMOS compatible digital I/O
CODEC identification
+5 V single power supply
Low power consumption
Operating temperature range: -40 擄C to +85 擄C
Package available: 64 pin PQFP
FUNCTIONAL BLOCK DIAGRAM
CH1
VIN1
VOUT1
2 Inputs
3 I/Os
2 Outputs
Filter and A/D
D/A and Filter
CH3
Filter and A/D
VIN3
VOUT3
2 Inputs
3 I/Os
2 Outputs
DSP
CORE
D/A and Filter
SLIC Signaling
SLIC Signaling
CH2
MCLK
CHCLK1
CHCLK2
CH4
PLL and Clock
Generation
General Control
Logic
PCM/GCI Interface
DD
DU
RESET
S0
S1
FSC
DCL
The IDT logo is a registered trademark of Integrated Device Technology, Inc
INDUSTRIAL TEMPERATURE RANGE
1
漏
2003 Integrated Device Technology, Inc.
MARCH 14, 2003
DSC-6036/5

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