IDT821054

QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE FEATURES 4-channel CODEC with on-chip digital filters Software selectable A/µ-law, linear code conversion Meets ITU-T G.711 - G.714 requirements Programmable digital filters adapting to system demands: - AC impedance matching - Transhybrid balance - Frequency response correction - Gain setting 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 Broadcast mode for coefficient setting 7 SLIC signaling pins (including 2 debounced pins) per channel Fast hardware ring trip mechanism IDT821054 2 programmable tone generators per channel for testing, ringing and DTMF generation 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 Advanced test capabilities: - 3 analog loopback tests - 5 digital loopback tests - Level metering function High analog driving capability (300 Ω AC) TTL/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 CH1 VIN1 VOUT1 2 Inputs 3 I/Os 2 Outputs Filter and A/D D/A and Filter CH3 Filter and A/D D/A and Filter VIN3 VOUT3 2 Inputs 3 I/Os 2 Out...