IEEE Std 959-1988 IEEE Standard Specifications for an I/O Expansion Bus: SBX Bus -Description

Content

• 1. General
• • 1.1 Scope
  • 1.2 Definitions
  • • 1.2.1 General System Term Definitions
    • 1.2.2 Signals and Paths
• 2. Functional Description
• • 2.1 Bus Elements
  • • 2.1.1 Baseboard
    • 2.1.2 Expansion Module
  • 2.2 Bus Signals
  • • 2.2.1 Address and Chip Select Lines
    • 2.2.2 Date Lines (MD0-MD15)
    • 2.2.3 Control Lines
    • 2.2.4 Interrupt Lines (MINTR0, MINTR1)
    • 2.2.5 Option Lines (OPT0, OPT1)
    • 2.2.6 Power Lines
    • 2.2.7 Reserved Lines
  • 2.3 Bus Operations
  • • 2.3.1 I/O Read Operations
    • 2.3.2 I/O Write Operations
    • 2.3.3 Direct Memory Access (DMA) Operations
    • 2.3.4 Interrupt Operations
• 3. Electrical Specifications
• • 3.1 General Bus Considerations
  • • 3.1.1 Logical and Electrical State Relationships
    • 3.1.2 Signal Line Characteristics
    • 3.1.3 Power Supply Specifications
    • 3.1.4 Environmental Considerations
  • 3.2 Timing Specifications
  • 3.3 Driver and Receiver Specifications
• 4. Mechanical Specifications
• • 4.1 Connector Pin Assignments
  • 4.2 Expansion Module Specifications
  • 4.3 Baseboard Specifications
  • 4.4 Board Height Specifications
  • 4.5 Mounting Techniques
• 5. Connector Specifications
• • 5.1 References
  • 5.2 Mechanical Requirements
  • • 5.2.1 Materials
    • 5.2.2 Number of Positions
    • 5.2.3 Durability
    • 5.2.4 Contact Retention Force
    • 5.2.5 Connector Mating and Unmating Forces
    • 5.2.6 Contact Engagement and Separation Forces
    • 5.2.7 Contact Identification
    • 5.2.8 Connector Requirements
  • 5.3 Electrical Requirements
  • 5.4 Environmental Requirements
• 6. Levels of Compliance
• • 6.1 Variable Elements of Capability
  • • 6.1.1 Data Path
    • 6.1.2 DMA Support
    • 6.1.3 Interlocked Operation
  • 6.2 Baseboards and Expansion Modules
  • 6.3 Compliance Level Notation
  • • 6.3.1 Data Path
    • 6.3.2 DMA Support
    • 6.3.3 Interlocked Operation
    • 6.3.4 Examples
    • 6.3.5 Compliance Marking
• Annex A Printed Circuit Hole Size and Contact Size
• Annex B I/O Connector Examples

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