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DESWBO will help you monitor SpaceWire Links, and solve SpaceWire connectivity issues.

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DESWBO Description

  • No SW required
  • Self Contained Design
  • 2 MDM connectors for monitoring 1 complete SpaceWire Link
  • International Power Adapter included
  • 1 year warranty standard. Extended warranty available.
  • ROHS and Standard processing available
In A hurry? Having trouble with SpaceWire? Need to get to the bottom of your interconnect issue fast? DESWBO will help you to solve SpaceWire link issues. With DESWBO - Dynamic Engineering SpaceWire BreakOut - Spacewire can be interconnected and monitored. DESWBO has two 9-pin MDM connectors to facilitate in-line monitoring of both sides of a SpaceWire link. DESWBO is designed to detect and decode bit sequences. Signals are issued indicating what types of characters are passing between nodes as well as the contents of data and timecode characters. A running count of flow control credits for each node is calculated by the DESWBO by monitoring FCT´s and N-character occurrences. LED and testpoint based user interface. Stand-alone operation. Power Supply included - now with international adapters and voltage/frequency. SpaceWire cables available.

The Dynamic Engineering SpaceWire Break-Out (DESWBO) monitors the signals of a single SpaceWire link. The board has two 9-pin MDM connectors to facilitate in-line monitoring of both sides of a SpaceWire link. DESWBO is designed to detect and decode bit sequences. Signals are issued indicating what types of characters are passing between nodes as well as the contents of data and timecode characters. A running count of flow control credits for each node is calculated by the DESWBO by monitoring FCTs and N-character occurrences.

The LVDS signals from each node are buffered to the opposite node and monitored by an FPGA. The FPGA contains the equivalent of two SpaceWire receiver modules that decode the SpaceWire signals, and extract the various data and control characters. See block diagram below. The DESWBO is tested with a special version of the PCI-SpaceWire with the ability to insert errors under software control. Normal and error conditions are tested on each unit as part of the ATP.

DESWBO Block Diagram

The end-of-packet, got-data and got-fct signals from each node are connected to pulse capture and extension circuits to drive three green LED´s. The error-end-of-packet, parity error, escape error, credit error and disconnect error signals for each node drive five red LED´s. These sixteen LED´s give a quick status of link activity and health.

In addition there are 24 test points for each node that are driven by the real-time signals from the SpaceWire character receivers, two test points for each node that are connected to the DIN and SIN signals from the LVDS receivers and one test point for each node that is driven by the recovered clock from the SpaceWire bit receivers.

The 24 test point signals consist of eight data bits, six credit count bits, Parallel data strobe, NULL received, FCT received, Timecode received, End-of-Packet, Error End-of-Packet, Credit error, Disconnect error, Escape error and Parity error. In addition there are three ground test points per node to facilitate probe grounding.

The DESWBO is powered by an external 5-volt supply [included] with on-board regulators for the various operating voltages required.

DESWBO Features

WxLxH 89.70mm x 147.74mm x 30.4mm measured at extreme points.
SpaceWire Ports
2 cross connected MDM-9 cable connections to provide pass through of SpaceWire signals and monitoring of both sides.
5V power adapter with international voltage / plugs. Local power supplies convert to FPGA and buffer voltages.
Test Points - Error
Parity, Escape, Disconnect, and Credit error.
Test Points - Strobe
When defined control characters are received the Error End of Packet, End of Packet, Timecode, FCT, NULL, and Data strobes are pulsed
Test Points - Credit
6 positions are provided to show the current credit count on each port
Test Points - Data
The decoded data pattern is available on this section of the header for each port. 8 bits. Use Data Strobe to qualify.
Test Points - Other
SIN, DIN, and the decoded Clock are available for each port
16 LED´s are provided. Pulses are lengthened for viewing.
Green: End of Packet, FCT, Data
Red: Error End of Packet, Escape Error, Parity Error, Credit Error, Disconnect Error.
Statement of Volatility
Download the Statement of Volatility for DESWBO in PDF format.

DESWBO Benefits

With the direct cross connect almost no added latency on the SpaceWire Link being monitored. Real Time decoding and monitoring of the traffic on the link.
System level cost is best when reasonably priced reliable hardware is used and NRE minimized. With DESWBO system NRE is reduced for any SpaceWire connectivity issues. See directly which link is mis-behaving and how. Please check the current per item pricing with the storefront at the top of this page. Orders can be placed via the on-line ordering system or via phone / email PO order systems.
Ease of Use
DESWBO is easy to use. Jusat connect between the two SpaceWire ports to be monitored. With standard connectors and pinouts, DESWBO can be connected with standard cabling in most cases. Please download the manual for more information.
We work to keep DESWBO in stock. Send in your order and in most cases have your hardware the next day. We can ship with FedEx pick-up everyday, and other carriers as requested.
SpaceWire Specification Compatibility
DESWBO is compliant per the ECSS-E-ST-50-12C specification. All Dynamic Engineering SpaceWire Modules are compatible with DESWBO. All other SpaceWire Modules which are compliant with the ECSS-E-ST-50-12C specification can be expected to work.

Part Number: DESWBO
Ordering Options

  • DESWBO Standard Product - with Power Supply and 2 ports to monitor 1 SpaceWire Link.

DESWBO Drivers

Software Support for DESWBO includes: Windows® 7, VxWorks, and Linux compliant drivers
Please see the Driver manuals for the specifics of each type.

DESWBO-7 Windows®7 or Linux drivers for DESWBO. The drivers are designed to be overlayed with individual IP Module(s) driver(s). IP drivers are auto installed for each instance detected. Please see the Driver manual for the specifics of writing your board interface. Please contact Dynamic Engineering if you would like us to produce one for your IP or a third party design. Our Windows drivers come with IP-Generic which is automatically installed when a specific driver is not found for a particular IP Module. IP-Generic can be used to control your IP including handling interrupts, and accesses to all 4 space types.

The DESWBO Linux driver is a bus driver capable of supporting multiple (up to 64) Industry Pack buses/carrier cards. This driver interfaces with the ipack-core Open Source code to support Industry Pack devices. This Open Source code has been slightly modified, and is included with the tar-ball for this driver.

A generic IPACK driver (ipack_gen) and user library (libipack) has been developed by Dynamic Engineering. This driver and library may be sufficient for developing user space drivers for a device depending upon the complexity of that device. Other device specific user libraries and kernel drivers are available for Dynamic Engineering Industry Pack modules. The diagram below illustrates possible layering of Industry Pack components:

Integration support is available. Please contact Dynamic Engineering for this option or download the Technical Support Description from the Company button.

DESWBO Manuals

Click on the link to Download selected manuals in PDF format.
Download the DESWBO Manual in PDF format.