Multibus-International

Model: CH543OSR

Manufactured by: Intel Corporation

19-slot Multibus II (EEE/ANSI 1296) backplane

• Power FETs at each slot controlled from Central Services Module control voltage at the slot

• EIA, 19" rack standard with provision for slide mounting.  Fits 24" deep rack

• Heavy-duty bus bars for negligible IR drop across card cage under maximum loading or power switching of adjacent slots

• 750 Watt multiple output switching power supply.  Jumper selectable 115/230 VAC

• High volume and uniform cooling airflow across all card positions (250+ LFM).  Air flow highly independent of adjacent equipment

• Built-in P2 switched power connection points

• Unrestricted area behind P2 backplane for user I/O configuration

• Central Services Module

• Integrates Multibus II Central System Functions on a single board

• Multibus II Parallel System Bus Clock generation for all boards

• Multibus II Interconnects Space registers for software configuration, diagnostics and system control

• System-wide signals for slot power, slot reset, warm restart and board detection

• System-wide Time-out Detection and Error Detection

• Built-in-Self-Test (BIST) Power-up Diagnostics with LED indicator and error reporting accessible to software via the interconnect space

• Individual LED indication of power status for each slot in the chassis

• System-wide Slot ID and Arbitration ID Initialization

• Time-of-day Clock Support with Battery Back-up

• 2 serial ports for local or remote communications

Intel's 19-slot CH543OSR Chassis/Central Services Module package provides a basic platform for the integration of large capacity systems that are capable of On-line Service and Repair (OSR).

The CH543OSR modular packaging allows for integration into standard 19-inch rack mount cabinets and fits a 24-inch deep rack.  Each chassis is compactly built, ruggedly constructed and features superior Intel quality and high reliability.  The backplane of the CH543OSR is equipped with power FETs at each slot that are controlled by the Central Services Module (CSM).  These electronic switches control all of the voltages available at the P1 connector.  Lugs are provided to supply switched power to the P2 connector if needed by the card to be inserted.

The new Central Services Module is responsible for managing the central system functions of clock generation, arbitration and assignment of IDs as defined by the Multibus II specification.  The CSM also provides a centralized capability to detect boards that have been inserted into the chassis (but not powered up) and to control the power and reset to each slot in the chassis independently.  Any other processor in the system may take advantage of these status and control functions by reading or writing interconnect registers on the CSM.  The CSM also provides a global, battery backed up clock available to all other processors on the bus, again through the interconnect registers.  Finally, the CSM provides two serial ports that may be connected to local serial terminals for local system control or through modems for remote system control and monitoring.

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