GENERAL PRODUCT DESCRIPTION

The AD1843 SoundComm™ Codec is a complete analog front end for high performance DSP-based telephony and audio applications. The device integrates the real-world analog I/O requirements for many popular functions thereby reducing size, power consumption, and system complexity.

FEATURES

Single Chip Integrated Speech, Audio, Fax and Modem Codec

Highly Configurable Stereo ∑∆ ADCs and Quad ∑∆ DACs

Supports V.34, V.32bis, and Fallback Modem Standards As Well As Voice Over Data

Dual Digital Resamplers with Programmable Input and Output Phase and Frequency

Three On-Chip Phase Lock Loops for Synchronization to External Signals, Including Video

Thirteen Analog Inputs and Seven Analog Outputs

Advanced Analog and Digital Signal Mixing and Digital to-Digital Sample Rate Conversion

Programmable Gain, Attenuation and Mute

On-Chip Signal Filters

Digital Interpolation and Decimation

Analog Output Low Pass

1 Hz Resolution Programmable Sample Rates from 4 kHz to 54 kHz Derived from a Single Clock Input

80-Lead PQFP and 100-Lead TQFP Packages

Operation from +5 V or Mixed +5 V/+3 V Supplies

FIFO-Buffered Serial Digital Interface Compatible with ADSP-21xx Fixed-Point DSPs

Advanced Power Management

VHDL Model of Serial Port Available; Evaluation Board and MAFE Board Available