M62/67 Flexible DSP/Data Acquisition Platform
Overview
The M62/67 board provides a flexible platform for a wide variety of DSP-based data
acquisition applications. The M6x boards combine the power of the 32-bit fixed-point C6201
or 32-bit floating-point C6701 DSP devices with parallel DSP-accessible onboard SRAM and SDRAM
memories, digital I/O, and
analog I/O module options. Two (2) onboard OMNIBUS module sites provide a
range of analog I/O options depending on which
module (or modules) are installed, including:
- sampling rates from dc to 20 MHz
- multi-channel (2-32 simultaneous; up to 64 multiplexed)
- type of A/D and D/A conversion; e.g. SAR or sigma-delta
- range of bit resolution, from 12 to 24
Combinations of the above parameters are possible by mixing and matching the modules installed on the M6x board.
The C6201 is a 32-bit fixed-point device with 16x16 multiplies and 32-bit fixed-point
results; the C6701 is a 32-bit floating-point device with 32x32 multiplies and 32-bit
floating-point results.
The M62/67 baseboard is available in two (2) form factors:
M62/67 Analog and Digital I/O Modules
The M62/67 input/output philosophy is entirely modular, providing two (2) daughterboard
sites for a wide array of "OMNIBUS" modules, including:
Note that because the M62/67 contains two (2) module sites, modules can be doubled to
provide 2x channel capability (the numbers in parentheses above), and modules can also be
mixed, to provide flexible data acquisition combinations.
M62/67 Specifications and Data Sheets
M62/67 Block Diagram
Below is a block diagram depiction of the M62/67 and its architecture and components,
including OMNIBUS module sites. Note that in any cases where the block diagram and
specifications above disagree, the specifications above are correct:
M62/67 Software Support
The M62/67 board is supported by Signalogic off-the-shelf DSP software products
designed for DSP-based data acquisition and C6x DSP code development. The software items
listed below use VxD device drivers developed by Signalogic, and provide support for the
M62/67 under Win9x, and Windows ME. Kernel-mode device drivers for Windows 2000
are currently under development.
Hypersignal®-Macro and Hypersignal-Acoustic
software series, which offer a number of simulation and real-time instrument
functions.Simulation functions include DSP and math functions, time domain display
(including waterfall, contour, magnitude, unwrapped phase), difference equation, digital
FIR and IIR filter design, sampling rate conversion, frequency zoom, wavelet transform,
minimum phase calculation, and many more. Instrument functions include spectrum analyzer,
digital oscilloscope, stimulus & response measurement, continuous signal generation,
real-time "snap-in" filtering, continuous disk record and generate, and more.
DirectDSP® is a Windows library which provides low-leveland
high-level calls for user-defined C/C++, Visual Basic, MATLAB®, or LabVIEW® programs.DirectDSP includes low-level M62/67 board control
functions such as reset/run/hold, register access, block memory transfer, DSP executable
file download, etc. High-level functions include waveform file acquire/generate,
continuous signal generation, and execution of any arbitrary Hypersignal DSP or math
function. DirectDSP includes strip-chart recorder, digital oscilloscope and digital tape
recorder demo program and source code examples.
The C6xx Source Code Interface contains numerous C6xx
algorithms and functions in source and binary form, such as optimized FFTs, filters,
matrix, transcendental, trig, signal manipulation function, M62/67 board initialization
and analog I/O examples, etc. These functions form the basis of higher-level software
functions and instruments; modification can be used to customize Hypersignal or DirectDSP
operation. User-defined C routine hooks are provided for real-time algorithm development.
The C6xx Source Code Interface can be used as a basic foundation for user-defined
real-time DSP systems and products.
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