The MC143416 Dual 16-Bit Linear Codec-Filter is a single-chip
implementation of the data conversion interface required to design
high-speed modems meeting a wide range of standards such as ITU-T
V.34 and PCM modem. It includes two high performance
Analog-to-Digital (A/D) and Digital-to-Analog (D/A) data converters.
The device performs all filtering operations related to the
conditioning and sample rate conversion of signals to and from the
data interface. Output from both codecs (COder/DECoder) is in 16-bit
2s complement format.
The MC143416 includes the necessary logic needed to generate all
clocks (oversampling, intermediate frequency, and baud rate) required
to perform the data processing operations involved in the
oversampling conversion of voice and data signals. Sample rates are
programmable, including 8000, 9600, 11025, 12000, and 16000
The MC143416 includes two Synchronous Serial Interfaces (SSIs)
through which an external Digital Signal Processor (DSP) can
configure and monitor the operation of the device. Digital sample
data is transferred to and from the codecs through the serial ports.
In addition, information can be written and read to the control and
status registers of the device via the serial port, transparent to
the flow of sample data. When used in a high speed modem application,
the MC143416 provides the analog front end interface required to
support modem and voice features.