串行端口16位SoundComm编解码器 Serial-Port 16-Bit SoundComm Codec
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
