Datasheet

SHARC Audio EZ-Extender Manual 1-5
SHARC Audio EZ-Extender Setup
It is important to set up all components of the system containing the
SHARC Audio EZ-Extender, then apply power to the system. The follow-
ing procedure is recommended for the correct setup.
Power your system after these steps are completed:
1. Read the audio interface section in this chapter—the text provides
an overview of the interface capabilities.
2. Read “System Architecture” on page 2-2 to understand physical
connections of the daughter board. For detailed information, refer
to “SHARC Audio EZ-Extender Schematic” on page B-1.
3. Refer to the readme text files in the <install_path>\214xx\Exam-
ples\SHARC Audio EZ-Extender
directories of VisualDSP++ 5.0
update 7 (or later) for information on how to configure the
SHARC Audio EZ-Extender board and mating EZ-Board. For cus-
tom setups, use “System Architecture” on page 2-2 in conjunction
with “SHARC Audio EZ-Extender Hardware Reference” on
page 2-1.
Audio Interface
The SHARC Audio EZ-Extender’s analog audio interface is comprised of
three Analog Devices AD1939 multichannel audio codecs.
The AD1939 is a high performance, single-chip codec featuring four ana-
log-to-digital converters (ADCs) for audio input and eight
digital-to-analog converters (DACs) for audio output. This translates to
twelve channels of audio in and twenty four channels of audio out. The
codec/extender can input and output data at a sample rate of up to
192 kHz on all channels.