IDT821054 - Integrated Device

IDT821054 QUAD PROGRAMMABLE PCM CODEC

The IDT821054 is a feature rich, single-chip, programmable 4channel PCM CODEC with on-chip filters. Besides the µ-Law/A-Law companding and linear coding/decoding (14 effective bits + 2 extra sign bits), the IDT821054 also provides 1 FSK generator for sending CallerID messages, 2 programmable tone generators per channel (which can generate ring signals) and 2.

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 IDT8.