Overview
DSP-based embedded applications often take the form of a digital signal processing engine coupled
with a specialized data conversion and signal conditioning front end. The front end electronics and
the DSP are almost always connected via high speed serial ports and the general purpose I/O ports
of the DSP. In most cases, once the local memory and peripheral interfacing needs of the DSP are
fulfilled, the DSP’s data and address busses are no longer needed.
Standardized bus architectures such as PC/104, PCI and cPCI are all based on communicating via
each board’s data and address bus, while ignoring the needs of the most DSP / data conversion
interfaces.
Introducing dspstak™
Danville’s dspstak modules are designed to simplify DSP-based embedded applications. Generally,
each dspstak consists of two modules: a DSP Engine, and a signal conditioning/data conversion I/O
Module. The Interconnect Port consists of SPORTs (high speed serial ports), SPI, general I/O, clocks
and power connections.
DSP Engine modules generally consist of a DSP processor, memory, power supplies and standard
digital I/O such as RS-232 and USB. We currently have products based on Analog Devices’ SHARC
®
processors.
The I/O Modules may include signal conditioning electronics, A/D and/or D/A data converters,
audio transceivers, unique connectors and a plethora of other special front end requirements. Since
the I/O Module is separate from the DSP Engine Module, custom interfaces can be created quickly
and inexpensively. Danville has a number of standard I/O Modules and often is willing to create a
new one based on customer request. You can also create your own.
dspstak™ 21262sx
This manual covers the dspstak 21262sx DSP Engine and is complemented by the dspstak Family
Users Manual. The family manual covers topics that all dspstaks have in common. You will want to
review the family manual for mechanical dimensions, system configurations, basic connector
specifications, etc.
The dspstak 21262sx manual covers topics that are relevant to the specific implementation of the
dspstak 21262sx DSP Engine. You will also need the Analog Devices’ ADSP-2126x SHARC DSP
Core and Peripheral manuals. These manuals can be downloaded from the Analog Devices web
site. Links to these manuals and other resources are found on our web site at
http://www.danvillesignal.com/index.php?id=dspdev_links
dspstak™ 21262sx User Manual
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