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ITEC 352
Lecture 31Buses / Peripherals
Buses and Peripherals
Review
• Memory• SD Memory chips• Rambus memory• Technology versus usage
Buses and Peripherals
Objectives
• Look into the connections between components
Buses and Peripherals
Overview
Buses and Peripherals
Drill down
Buses and Peripherals
How does it work?
• Have to know when you can use the signals present
• Oscillator– Produces pulses at a certain frequency– Tuning fork
Buses and Peripherals
Synchronous
Buses and Peripherals
Asynchronous
Buses and Peripherals
Arbitration
• Who gets to use the bus?• What is inside the boxes?
Buses and Peripherals
Bridging
Buses and Peripherals
Flowchart for disk access
• What causes reading and writing from disks?• How does the bus play into it?
Buses and Peripherals
Interrupts
• What are they?• Why are they used?• How do they affect the bus?
Buses and Peripherals
DMA
• Bypassing the CPU
Buses and Peripherals
Interrupts
• Flow chart
Buses and Peripherals
Cycles
• Separate into categories• Why idle?
Buses and Peripherals
Bursting
• Doing one operation
Buses and Peripherals
Summary
• Introduction to buses• Next time– Specific devices