Motorola MVME956AC, MVME956UM2 user manual Install the Daisy-Chain Jumpers

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Install the Daisy-Chain Jumpers

Install the Daisy-Chain Jumpers

All daisy-chain lines of the VME64x bus can be separately bypassed with removable shorting jumpers on every connector socket. Shorting the input to the output of the daisy-chain signals is required if the daisy-chains are in use, and if a VME64x module design does not provide for the propagation of the daisy-chain.

For instance, if a backplane slot contains a device module designed for daisy-chain signal propagation, no jumpers are required on the jumper pins for that slot. However, all empty slots, and slots containing modules without this capability, must have daisy-chain jumpers installed to provide propagation of these signals.

Daisy-chain bypass jumper areas are provided on the rear side of the backplane. For an illustration of the backplane daisy-chain jumper wiring, see Figure 4-2 on page 4-8.

The following procedure is suggested for installing the jumpers:

1.Attach an ESD strap to your wrist. Attach the other end of the ESD strap to the chassis as a ground. The ESD strap must be secured to your wrist and to ground throughout the procedure.

2.Perform an operating system shutdown. Turn the AC or DC power off and remove the AC cord or DC power lines from the system.

3.At the rear of the backplane, select the row(s) of header pins that require jumpers. Any backplane slot that will not be occupied by a VME64x module requires jumpers on the rear backplane pins to propagate the Bus Grant (BG) and Interrupt Acknowledge (IACK) signals to the next VME64x module slot. See Figure 4-1 on page 4-4 and Table 4-2 on page 4-7.

For example: If a VME64x module is used in all slots except slots J103 and J106, jumpers must be installed on the BG and IACK pins associated with those slots. (The pins that must be jumpered are the ones located immediately to the left of the module slot, J4 through J14, depending on the slot, when viewed from the rear of the backplane.) In this case, the following pairs of header pins would require jumpers:

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Contents MVME956AC VME Chassis User’s Manual Restricted Rights Legend Preface Page Safety Summary Safety Depends On You Regulatory Notices Industry Canada Page Contents Support Information List of Figures List of Tables Features OverviewGeneral Description Chassis Description and Specifications Power Supply Description and Specifications MVME956AC Chassis SpecificationsPower Supply Limit Considerations VME Bus Backplane Description and SpecificationsSlot VME Bus Backplane Specifications Safety and Regulatory Compliance General Precautions Operating EnvironmentChassis Cooling Considerations Hardware Preparation Hardware Preparation ItemsRelated Documentation Document Title Motorola Publication NumberChassis Installation Instructions Benchtop OperationInstall the Desktop Cover Kit Cover Kit Rack Mounting Option Cover Kit RemovalFCC, VDE Operating Procedures Controls and IndicatorsPower Control Procedure Backplane Power Physical DescriptionBackplane Bus Connectors VME64x Bus Interface Signal TerminationBackplane Preparation Slot Backplane Connectors and Headers Rear View Install the Daisy-Chain Jumpers Power Monitor Connection Pin AssignmentsLive Insertion Backplane Daisy-Chain Jumper Wiring Removal and Replacement Procedures Power Supply RemovalPower Supply Replacement Power Supply Removal/ReplacementPower Supply Disk and Tape Drive Disk/Tape Drive Removal Removal and Replacement Procedures VME64x Bus Backplane Backplane Mounting Card File Removed Replacement Cooling Fan Cooling Fan Removal/Replacement Optional Air Filter Kit Drawings/Wiring Diagram IntroductionParts Lists MVME956AC Chassis Parts ListParts Lists MVME956AC-AC Major Assemblies Model Part Common Description Number NameMVME956AC Chassis Assembly, 1 MVME956AC Chassis Assembly, 2 MVME956AC Wiring Diagram Index IN-2

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.
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