SigC54/55xx-PC/104 Embedded Telecom / VoIP / Acoustic DSP Card

Overview Feature Summary Specifications and Data Sheets Telephony T1/E1 Interface Network Interface Serial I/O Interface Analog I/O Boot / FLASH EEPROM Stand-Alone Operation Option Software Support SigC54xx-SODIMM Modules SigC55xx-SODIMM Modules C67xx Version of PC/104 Card SigC6415-PTMC Octal DSP Resource Board SigC5561-7x7-PTMC VoIP Board Return to DSP Hardware Page

SigC54xx-PC/104  board shown with one (1) SigC5416 processor module and one (1) SigSD4 4-channel audio module installed. -- Click here to see full-size picture

SigC54xx-PC/104  board shown with one (1) SigC5416 processor module and one (1) SigSD4 4-channel audio module being installed. -- Click here to see full-size picture

The SigC54xx-PC/104 card uses a modular approach to provide up to 1920 MIPS (C54xx processor modules) or 3200 MIPS (C55xx processor modules) in a single PC/104 form-factor footprint. The card accepts modules with Texas Instruments C54xx or C55xx DSP processors and modules with 16-bit audio, speech, or other analog I/O. It is suitable for defense electronics, embedded telecom, Internet infrastructure, or data acquisition and measurement applications where space is at a premium.

Applications for the SigC54/55xx-PC/104 card include base-station processing, VoIP (voice-over Internet protocol) networking functions, VoDSL (voice-over DSL), Internet routing, multiple-channel speech or audio code / decode (e.g. G.7xx, GSM, or MELP speech compression and MP3 audio compression), modem banks, echo cancellation, and speech recognition.

The modular approach used by the SigC54/55xx-PC/104 card is particularly well suited to providing a scalable solution for defense electronics, telecom, Internet equipment, and data acquisition/measurement applications that require multiple DSP devices. For example, channel capacity is highly configurable and upgradeable.

The SigC54/55xx-PC/104 card is a PC/104 format board, fully compliant with PC/104 specification v2.3 in dimensions and mechanical considerations.

• Up to four (4) module sites for C54xx or C55xx processors and analog or audio I/O

• Up to 1920 MIPS (C54xx) or 3200 MIPS (C55xx) total processing power with 4x modules installed

• High-speed host interface

• Boot/FLASH EEPROM for stand-alone operation

• Supports mutichannel analog I/O interface with SigSD4 Audio Module or other analog I/O modules installed

• Dual RS-232 serial ports

• Quad RS-422 synchronous serial line driver

• Quad RS-422/423 synchronous serial line receiver

• USB Interface

• Quad T1/E1 telephone interface (integrated framer / transceiver)

• 10/100 Mbps Ethernet controller with integrated transceiver

• Flexible onboard TDM stream routing, via programmable PLD switch matrix under host software control

• Global Bus expansion header

• 1149.1 JTAG header

• Supported by  DirectDSP®, and Hypersignal® software

Application example of SigC54xx-PC/104 card and enclosure. Click to see blow-up picture and captions.

Specifications and Data Sheets

• SigC54/55xx-PC104 Data Sheet (384 KB) 

• Application Board and Enclosure Example 

• SigC54xx-SODIMM Module Data Sheet (341 KB)

• SigC55xx-SODIMM Module Data Sheet (407 KB)

• Application External Cabling Example (7 KB)

• Application Internal Cabling Example (13 KB)

Telephony T1/E1 Interface

The Rev. C SigC54/55xx-PC/104 card contains a Dallas Semiconductor DS2155 device with integrated framer/transceiver that provides a T1/E1 interface available on a 10-pin header at the board edge. Up to 24 data streams and 8 signalling streams can be processed by any combination of DSPs. The Rev. D card contains a PMC-Sierra PM4354 device with integrated framers and transceivers that provide a quad T1/E1 interface at headers on the board edge. Up to 96 data streams may be processed by the DSPs.

Command, control, and status information is available to the host interface, and all TDM data may be routed to the DSP module sites, via the programmable PLD switch matrix.

Combined with SigC54xx or SigC55xx processor modules, the SigSD4-SODIMM Audio Module offers multichannel 16-bit sigma-delta analog I/O as an integrated component in the modular solution. Audio Module features include:

• sigma-delta converters provide sharp anti-alias and reconstruction filter roll-off, and nearly ideal linear phase response

• sampling rates and filter cutoff frequencies are software programmable; all channels are sampled simultaneously

• TDM (time division multiplex) serial output allows distribution of multichannel audio data to one or more DSP processors; audio data can be replicated among processors, or distributed uniformly, as needed

• analog input/output signals are routed directly to the module using a small-outline Mictor 38-pin connector that supports individually shielded conductors.

Stand-Alone Operation Option

The SigC54/55xx-PC/104 contains a 1M x 8 FLASH EEPROM device site for storage of boot code and nonvolatile application data.

SigC54/55xx-PC/104 Software Support

The SigC54/55xx-PC/104 card, as well as other C54xx and C55xx platforms such as the Texas Instruments DSK C5402 board and SigC54/55xx-PCI board are supported by Signalogic off-the-shelf DSP software products designed for DSP-based real-time processing and C54xx DSP code development, including:

• 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 that provides low-level and high-level calls for user-defined C/C++, Visual Basic, MATLAB®, or LabVIEW®programs. The DirectDSP API includes low-level hardware 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 C54xx Source Code Interface and C55xx Source Code Interface contain numerous C54xx and C55xx algorithms and functions in source and binary form, such as optimized FFTs, filters, matrix, transcendental, trig, signal manipulation function, processor and card 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 software operation. User-defined C routine hooks are provided for real-time algorithm development. The C54xx and C55xx Source Code Interfaces can be used as a basic foundation for user-defined real-time DSP systems and products

Note that if the SigC54/55xx-PC/104 board is used as a development system or in development mode, it must be plugged into a passive carrier card.