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