QUAD PROGRAMMABLE PCM
CODEC WITH MPI INTERFACE
IDT821054
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2 programmable tone generators per channel for testing,
ringing and DTMF generation
FEATURES
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4-channel CODEC with on-chip digital filters
Software selectable A/µ-law, linear code conversion
Meets ITU-T G.711 - G.714 requirements
Programmabledigitalfiltersadaptingtosystemdemands:
- AC impedance matching
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1 programmable FSK generator for sending Caller-ID messages
Two programmable chopper clocks
Master clock frequency selectable: 1.536 MHz, 1.544 MHz, 2.048
MHz, 3.072 MHz, 3.088 MHz, 4.096 MHz, 6.144 MHz, 6.176 MHz or
8.192 MHz
- Transhybrid balance
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Advanced test capabilities:
- Frequency response correction
- 3 analog loopback tests
- Gain setting
- 5 digital loopback tests
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Supports two programmable PCM buses
Flexible PCM interface with up to 128 programmable time slots,
data rate from 512 kbits/s to 8.192 Mbits/s
MPI control interface
- Level metering function
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High analog driving capability (300 Ω AC)
TTL/CMOS compatible digital I/O
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CODEC identification
Broadcast mode for coefficient setting
7 SLIC signaling pins (including 2 debounced pins) per channel
Fast hardware ring trip mechanism
+5 V single power supply
Low power consumption
Operating temperature range: -40°C to +85°C
Package available: 64 Pin PQFP
FUNCTIONAL BLOCK DIAGRAM
CH1
CH3
Filter and A/D
Filter and A/D
VIN3
VIN1
D/A and Filter
D/A and Filter
VOUT3
VOUT1
DSP
2 Inputs
2 Inputs
3 I/Os
Core
3 I/Os
SLIC Signaling
CH2
SLIC Signaling
2 Outputs
2 Outputs
CH4
DR1
DR2
MCLK
CHCLK1
CHCLK2
PLL and Clock
Generation
General Control
Logic
MPI Interface
PCM Interface
DX1
DX2
TSX1 TSX2
RESET INT12 INT34 CCLK CS CI CO
FS BCLK
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEBRUARY 26, 2003
INDUSTRIAL TEMPERATURE RANGE
1
2003 Integrated Device Technology, Inc.
DSC-6035/5