IDT821054PQF

Product Summary

The IDT821054PQF is a feature rich, single-chip, programmable 4-channel 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 IDT821054PQF also provides 1 FSK generator for sending Caller-ID messages, 2 programmable tone generators per channel (which can generate ring signals) and 2 programmable chopper clocks for SLICs. The IDT821054PQF is programmed via a Microprocessor Interface (MPI). The device offers strong test capability with several analog/digital loopbacks and level metering function. It brings convenience to system maintenance and diagnosis.

Parametrics

Absolute maximum ratings: (1)Power supply voltage: 6.5 V max; (2)Voltage on Any Pin with respect to ground: -0.5 to 5.5 V; (3)Package power dissipation: 1.5 W max; (4)Storage temperature: -65 to +150 °C; (5)Operating temperature:-40 to +85 °C; (6)Power supply voltage: 4.75 to 5.25 v; (7)VIL Input low voltage: 0.8 V max at All digital inputs; (8)VIH Input high voltage: 2.0 V min at All digital inputs.

Features

Features: (1)4-channel CODEC with on-chip digital filters; (2)Software selectable A/P-law, linear code conversion; (3)Meets ITU-T G.711 - G.714 requirements ; (4)Programmable digital filters adapting to system demands:AC impedance matching; transhybrid balance; Frequency response correction; Gain setting; (5)Supports two programmable PCM buses ; (6)Flexible PCM interface with up to 128 programmable time slots,data rate from 512 kbits/s to 8.192 Mbits/s; (7)MPI control interface; (8)Broadcast mode for coefficient setting; (9)7 SLIC signaling pins (including 2 debounced pins) per channel ; (10)Fast hardware ring trip mechanism; (11)2 programmable tone generators per channel for testing,ringing and DTMF generation; (12)1 programmable FSK generator for sending Caller-ID messages; (13)Two programmable chopper clocks; (14)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; (15)Advanced test capabilities: 3 analog loopback tests; 5 digital loopback tests; Level metering function; High analog driving capability (300Ω+ AC); (16)TTL/CMOS compatible digital I/O; (17)CODEC identification; (18)+5 V single power supply; (19)Low power consumption; (20)Operating temperature range: -40°C to +85°C; (21)Package available: 64 Pin PQFP.

Diagrams