IDT821064 Datasheet, PDF (1/33 Pages) Integrated Device Technology – QUAD PROGRAMMABLE PCM CODEC WITH GCI INTERFACE

QUAD PROGRAMMABLE PCM CODEC
WITH GCI INTERFACE
IDT821064
FEATURES
• 4 channel CODEC with on-chip digital filters
• Software selectable compressed (A/µ-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,
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 (300Ω AC )
• TTL and CMOS compatible digital I/O
• CODEC identification
• +5 V single power supply
• Low power consumption
• Operating temperature range: -40 °C to +85 °C
• Package available: 64 pin PQFP
FUNCTIONAL BLOCK DIAGRAM
VIN1
VOUT1
2 Inputs
3 I/Os
2 Outputs
MCLK
CHCLK1
CHCLK2
CH1
Filter and A/D
D/A and Filter
SLIC Signaling
CH2
PLL and Clock
Generation
DSP
CORE
General Control
Logic
CH3
Filter and A/D
D/A and Filter
SLIC Signaling
CH4
PCM/GCI Interface
VIN3
VOUT3
2 Inputs
3 I/Os
2 Outputs
DD
DU
RESET
S0 S1 FSC DCL
The IDT logo is a registered trademark of Integrated Device Technology, Inc
INDUSTRIAL TEMPERATURE RANGE
1
© 2003 Integrated Device Technology, Inc.
MARCH 14, 2003
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