Technobox, Inc. | PMC/XMC Boards & More
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We offer a variety of mezzanine board solutions for supplemental I/O used in embedded systems. Designs address applications from convection-cooled PMCs with 4 ports to a unique family of XMCs featuring mix-and-match modularity, from which a collection of 4, 8 or 16-port I/O modules can be built and delivered with limited lead times.

 
 
 

8-Port RS422 Asynchronous I/O XMC w/ 121 ohms Parallel Termination (VITA 42) (8518)

8-Port RS422 Asynchronous I/O XMC w/ 121 ohms Parallel Termination (VITA 42) (8518)

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8-Port RS422 Asynchronous I/O XMC w/ 121 ohms Parallel Termination on Receive Side (VITA 42)

The Technobox, Inc. P/N 8518 provides eight industry standard 16550-based UARTs using RS422 signaling levels. Each port has 121 ohms parallel termination on the receive side. The board's feature set is configured without using any jumpers, plug-on mezzanines or complex FPGAs. Instead, functions are implemented by selective population of the boards eight configuration sections. At the heart of the design is a single Exar XR17V58 Octal UART and sixteen Intersil ISL3177E Full duplex RS485/RS422 transceivers (no enables). 

The front-panel I/O interface is a standard 68-pin SCSI-style connector. Neither PN4 nor P16 rear I/O is supported. Rear I/O capable variants (either air-cooled or conduction-cooled) can be built, however. Various breakout panels and cable accessories are available to convert the 68-pin front-panel I/O to support user requirements. For example, Technobox, Inc. P/N 4988 can be used to convert the output to eight DB9 connectors. The XMC interface connector is VITA 42 style. Technobox, Inc P/N 8518 is similar in function to Technobox, Inc. P/Ns 2316 and 5288, offering an immediate solution for migrating from the PMC-to-XMC form factor.

 

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