Analog Audio - Analog Devices Lite ADSP-21375 EZ-KIT System Manual

Analog Audio

Analog Audio
1-14
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interface consists of LabVIEW-based virtual instruments, a multifunction
data acquisition (DAQ) device, and a custom-designed bench-top work-
station and prototype board. This combination provides a ready-to-use
suite of instruments found in most educational laboratories. Because the
interface is based on LabVIEW and provides complete data acquisition
and prototyping capabilities, the system is ideal for academic coursework
that range from lower-division classes to advanced project-based
curriculums.
For more information on ELVIS and example demonstration programs,
visit National Instruments Web site at
The AD1835A device is a high-performance, single-chip codec featuring
four stereo digital-to-analog converters (DACs) for audio output and one
stereo analog-to-digital converters (ADCs) for audio input. The codec can
input and output data with a sample rate of up to 96 kHz on all channels.
A 192 kHz sample rate can be used with one of the DAC channels.
The processor is interfaced with the AD1835A codec via the DAI port.
The DAI pins can be configured to transfer serial data from the codec in
either time-division multiplexed (TDM) or 2-wire interface mode (TWI).
For more information about the codec's connection to the DAI, see
Interface" on page 2-4.
The master input clock (
by the on-board 12.288 MHz oscillator or supplied by one of the DAI
pins of the processor. Using a DAI pin to generate the
the on-board oscillator, allows synchronization of multiple devices in the
system. It is possible to disable the on-board audio oscillator from driving
the audio codec and the processor's input pin. For instructions on how to
configure the clock, refer to
ADSP-21375 EZ-KIT Lite Evaluation System Manual
www.ni.com
) for the AD1835A codec can be generated
MCLK
"Codec Setup Switch (SW3)" on page
.
"DAI
, as opposed to
MCLK
2-11.