M44 Flexible DSP/Data Acquisition Platform
Not Recommended for New Design. Click here for Recommended Solution
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a powerful but inexpensive 32-bit floating-point DSP
PCI bus controller for high-rate transfer/streaming of data to host RAM (up to 40 Mbyte per sec, depending on host system)
small form factor
flexible and expandable acquisition of real-world signals
half-size PCI (standard PC)
6U cPCI (Compact PCI)
SD4 4-channel 24-bit 96 kHz sigma-delta analog I/O; 104 dB SNR typical
AIX 4-channel 16-bit 2.5 MHz SAR input, with anti-alias filters
AIX20 4-channel 12-bit 20 MHz SAR input
DAC40 4-ch 14-bit 40 MHz SAR output
A16D2 16-ch 16-bit 2 MHz multiplexed input, 2-ch 16-bit simultaneous output (no longer supported for M44; please see information about M67 board ) This page is temporary not available.
Note that because the M44 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.
M44 Telecom Modules
The M44 input/output philosophy is entirely modular, providing two (2) daughterboard sites for standard "OMNIBUS" telecom modules, including:
M44 Specifications and Data Sheets
M44 Block Diagram
Below is a block diagram depiction of the M44 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:
M44 Software Support
The M44 board is supported by Signalogic off-the-shelf DSP software products designed for DSP-based data acquisition and C4x DSP code development. The software items listed below use VxD device drivers developed by Signalogic, and provide support for the M44 under Win9x, and Windows ME. Kernel-mode device drivers for Windows XP 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-level and high-level calls for user-defined C/C++, Visual Basic, MATLAB®, or LabVIEW® programs. DirectDSP includes low-level M44 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 TMS320C4x Source Code Interface contains numerous C4x algorithms and functions in source and binary form, such as optimized FFTs, filters, matrix, transcendental, trig, signal manipulation function, M44 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 C4x Source Code Interface can be used as a basic foundation for user-defined real-time DSP systems and products.