Chapter 5 - Bus System

Chapter 5 - Bus System

1. A communication pathway

2. Data Bus

   • - Carries data and instruction
   • - Provide a path for moving data among system modules

3. Address Bus

   • - A pathway tp carry address from register to memory

4. Control Bus

   • - Control signal
   • - Timing signals
   • - Command signals

5. Internal and external buses

   • Internal bus
     • - A bus located strictly within a CPU chip for communications among the components in a CPU chip.
   • External bus/ expansion bus
     • - Outside a CPU chip

6. Bus Hierarchy

   • - The processor bus
   • - The cache bus
   • - The memory bus
   • - The Local I/O bus
   • - The standard I/O bus

7. Characteristics of bus

   • Bus width
   • Bus speed
   • Bus bandwidth

8. Peripheral Component Interconnect (PCI)

   • - PCI Special Interest Group(SIG)
   • PCI Express(PCIe)