VME64x Bus Backplane

VME64x Bus Backplane

To remove or replace the backplane used in the MVME956AC chassis, follow these procedures.

Removal

1.Turn the power OFF to all equipment and disconnect the power cable from the AC power source.

2.Remove all external cabling connected to modules installed in the chassis. Then remove all modules installed in the chassis.

3.Slide the MVME956AC chassis out from its rack mounting or remove the top panel of your lab benchtop unit.

4.Remove the screws holding the top cover to the chassis and lift off the top cover.

5.For better access to the backplane, you may remove the rear card file subassembly from the rear of the chassis by removing the screws on the left and right sides of the card file.

6.Remove all internal cables connected at the rear of the backplane.

7.Remove all power wires from the rear of the backplane.

Note: Mark the wire locations carefully so they can be correctly reinstalled. Incorrect connection of these wires can cause damage to the equipment.

8.Disconnect the bus bar’s ground and +5V by removing the screws that attach it to the backplane.

9.Disconnect the stiffener bar from the chassis by removing the two screws located on the left side of the chassis. Then, remove the two screws on the right side of the chassis by accessing through the drive cable access panel.

10.Loosen and remove the two rows of screws that secure the backplane to the chassis frame members. Then remove the backplane.

5

http://www.mcg.mot.com/literature

5-9

Page 45 Page 47
Page 46
Image 46
Motorola MVME956AC, MVME956UM2 user manual VME64x Bus Backplane, Removal
Page 45 Page 47

MVME956AC, MVME956UM2 specifications

The Motorola MVME956UM2 and MVME956AC are advanced embedded computing platforms designed for high-performance industrial and military applications. These ruggedized computing solutions cater to various sectors, including telecommunications, aerospace, and defense, providing a reliable foundation for real-time processing and data acquisition tasks.

One of the distinguishing features of the MVME956UM2 and MVME956AC is their robust architecture, based on the PowerPC processor. The MVME956UM2 generally offers a PowerPC 750 microprocessor, operating at clock speeds of up to 600 MHz, while the MVME956AC may leverage a higher performance variant for enhanced computing capabilities. This processor architecture enables efficient execution of complex applications and multi-threading operations, making it suitable for demanding environments.

Both models support advanced memory configurations, accommodating up to 512 MB of RAM and several megabytes of non-volatile flash memory. This flexibility allows developers to design applications with substantial data handling requirements, such as real-time analytics or extensive data logging.

Another notable aspect of the MVME956 series is its modular design, which facilitates easy integration with various I/O modules and communication interfaces. The board features multiple Ethernet ports supporting both 10/100Base-T and Gigabit Ethernet, enabling high-speed data transfer across networks. Additionally, with support for PCI, USB, and other serial communication standards, developers can create customized solutions tailored for specific application needs.

Durability is one of the key characteristics of the MVME956 models. They are built to withstand extreme environmental conditions, including a wide temperature range, vibration, and shock. This makes them ideal for use in aircraft, naval vessels, and other challenging settings where reliability is paramount.

The MVME956AC also offers enhanced graphics support, with the ability to drive advanced visual displays for monitoring and control tasks. This feature is particularly advantageous in situations where real-time visual feedback is critical, such as in control rooms or manned military operations.

In summary, the Motorola MVME956UM2 and MVME956AC represent powerful, versatile computing platforms tailored for demanding applications. With their advanced processing capabilities, expansive memory, rugged design, and extensive I/O options, these embedded systems are well-suited for a variety of industrial and defense environments, making them a preferred choice among engineering professionals.
Top Page Image Contents