The MSP-H8 FX S/O Media Gateway is a full-size PCI board with 4, 6, or 8 high-performance analog trunk interfaces. Four office interfaces (FXO) are on the board, supporting a loop-start connection to a PBX or a CO. There are two two-port daughterboard sites that can accommodate either office or station interfaces (FXS), supporting the connection of phones or fax terminals. No external power is required for the station interfaces.
A TI TMS320C5409 DSP is included for use as a control and media processor. When used as a control processor only, all media processing is performed on the host. The MSP-H8 FX S/O offers the ultimate in per-port affordability by taking advantage of the high MIPS ratings of PCs by eliminating the need for DSPs on the telephony interface board. However, the board's DSP is often used to support line echo cancellation.
Included are the high-resolution 16-bit linear codecs with the low-distortion characteristics needed for high-speed modems, such as Commetrex' V.34 fax modem. The PCM data are buffered and transferred to the host PC via an efficient PCI plug-and-play interface.
The board is available with the MSP-H8 FX S/O Board-Level Developer's Kit, which supports development for any proprietary application. The Board-Level SDK gives the developer the same tools Commetrex' engineers use to develop board-level software.
The MSP-H8 FX S/O is also available with the optional OpenMedia media-processing software environment. OpenMedia is a comprehensive multi-stream software environment that permits media-processing vendors to develop to one open, portable environment, rather than for multiple proprietary environments that lack the potential of broad market coverage. With the OpenMedia SDK the MSP-H8 FX S/O becomes an open hardware-software environment for the media-processing software developer. It also supports DSP-based signal processing on other members of Commetrex's MSP Media Gateway product family. For example, a system that begins with one MSP-H8 FX S/O with all signal processing performed on the host, can be easily expanded without additional host loading by adding an MSP-640. When used in conjunction with OpenMedia, the MSP-H8 FX S/O can support BladeWare, Commetrex' host-based media-processing software, or various media-processing products from other vendors, integrated with Commetrex' Open Telecommunications Framework® Kernel telephony middleware.
Features
- 8 16-bit linear codecs
- RJ45 Pluggable trunk interfaces
- Loop start (North America & CTR-21)
- Station SLIC
- TMS320C5409 DSP
- 32-KBytes Internal DSP RAM
- 128-KBytes External DSP RAM
- PCI Plug-n-Play host-PC interface
- On-board, security EEPROM
- JTAG bus and connector
- 5-volt-only power requirement
Benefits
- Software-defined media
- Multiple media per board
- Ultra-low distortion, low-noise data
- Multiple vendors per board
- Productive development
- Improved strategic options
- Configuration flexibility
- Broad market coverage
- Support for high-speed modems
System Overview
The MSP-H8 FX S/O is optimized for applications requiring from 2-to-8 (although it has four ports, it's cost-effective down to two) analog line interfaces. PCM data are managed by a DSP-based I/O processor and transferred between the board and the host computer over a PCI plug-and-play interface. Two dual two-port pluggable analog line-interface modules are available to support station and office interfaces on the same board.
I/O Processor
The I/O processor is implemented on a TI TMS320C5409 DSP. It manages a high-speed synchronous serial port delivering data to and from the CODECs, and also performs trunk supervision.
The I/O Processor Module executes tasks dynamically assigned to it by the host processor via the PCI bus. Examples of tasks the I/O Processor will perform are
- Communications with the Host Processor
- Communications with the signaling channels
- Pre-processing of voice and data channels
- Built-in self test
- Maintain network signaling state machines
PCI Interface
MSP-H8 FX S/O is a "Plug & Play" (P-n-P) 32-bit, 33-MHz PCI Bus module. The P-n-P architecture allows jumper-free, all-software configurability of the card. It allows the host PC to assign addressing ranges, interrupts, and DMA request lines to each P-n-P card at power-up. P-n-P also allows bus-conflict detection and on-the-fly configuration changes in the event of a conflict. The P-n-P architecture preserves full interoperability with legacy (non-P-n-P) cards, but the mixed system will not be fully auto-configurable. The PCI Bus interface is a single-chip solution implemented using a PCI bus controller. The controller incorporates a PCI slave interface for configuration cycles, accesses to it's internal registers, and access to the I/O Processor HPI interface, providing access to all I/O-processor registers and internal memory. The controller also supports the PCI BUS_LOCK function.
Security Sentinel
The Sentinel combines 1024 bits of EEPROM, a 64-bit secret code, an 8-byte register/control page with up to five user read/write bytes, a 512-bit SHA-1 engine and a fully-featured 1-Wire interface in a single chip. Each device has its own 64-bit ROM registration number that is factory lasered into the chip to provide a guaranteed unique identity for absolute traceability.
Analog Trunk InterfaceThe MSP-H8 FX S/O includes up to 8 programmable analog trunk interfaces. The analog hybrids are capacitively coupled Silicon Labs ProSLICs, which integrate a subscriber-line interface circuit (SLIC), codec, ring Generator, and battery-generation functionality. The integrated battery supply continuously adapts its output voltage to minimize power dissipation to conserve space and improve accuracy, while meeting the requirements of North American, East Asian, and the European CTR-21. Since the MSP-H8 FX S/O is intended for integrated-media applications, including high-speed data modems, 16-bit linear codecs were chosen for the line interfaces.
The DAA includes the following:
- Programmable line interface
- AC termination
- DC termination
- Ring detect threshold
- Ringer impedance
- 80 dB dynamic range TX/RX paths
- Integrated codec and 2- to 4-wire hybrid
- Integrated ring detector
- Type I and II caller ID support
- Line voltage monitor
- Loop current monitor
- Polarity reversal detection
- Programmable digital gain
- Clock generation
- Pulse dialing support
- Overload detection
- 3.3 V power supply
- Serial interface control for up to eight devices
- >5000 V isolation
- Parallel handset detection
- +3.2 dBm TX/RX level mode
- Programmable digital hybrid for near-end echo reduction
ProSLICs
ProSLICs feature:
- All battery, over-voltage, ringing, supervision, codec, hybrid, and test (BORSCHT) functions
- Software-programmable internal balanced ringing up to 90 VPK (5 REN up to 4 kft, 3 REN up to 8 kft)
- Integrated battery supply with dynamic voltage output
- On-chip dc-dc converter continuously minimizes power in all operating modes
- Powered from a single 3.3 V or 5 V supply
- 3.3 to 35 V dc input range
- Dynamic 0 to -94.5 V output
- Low-cost inductor and high-efficiency transformer versions supported
- Software-programmable linefeed parameters:
- Ringing frequency, amplitude, cadence, and waveshape
- 2-wire ac impedance and hybrid
- Constant current feed (20 to 41mA)
- Loop closure and ring trip thresholds and filtering
- Software-programmable signal generation and audio processing:
- Phase-continuous FSK (caller ID) generation
- Dual audio tone generators
- Smooth and abrupt polarity reversal
- mu-Law/A-Law and 16-bit linear PCM audio
- Extensive test and diagnostic features
- Multiple voice loopback test modes
- Real time dc linefeed measurement
- GR-909 line test capabilities
- 100% software-configurable global solution with a comprehensive set of telephony signaling capabilities including expanded support of Japan and China country requirements
Related Publications
Specifications
| Compatibility | PCI bus |
| Power | PCI bus 5.0 volts |
| PCI Bus | 32-bit, 33 MHz PCI Bus, supporting 3.3V and 5V bus signaling |
| Form factor | Full-length PCI |
| Initialization | PCI Plug-and-Play |
| Connectors | Two, RJ-45 for telco lines, 10-pin right-angle male ribbon connector for RS-232, 14-pin right-angle JTAG |
| I/O processor | TI TMS320C5409 @ 100 MIPS |
| DSP RAM | 128-Kbytes 100-MHz SRAM |
| Security Button | 64-bit ID, 1152 bits storage |
| Trunk Interfaces | 4 RJ45/11 analog ports, plus two, two-port field -replaceable FXS or FXO plug-in modules |
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