Datapath: Register files

• Collections of registers

  • Two-dimensional array of flip-flops
  • An address indexes a particular word
  • Can have separate read and write addresses
    • Can read and write simultaneously

• Example: 4 by 4 register file

  • 16 D flip-flops
    • Four words of four bits each
    • Write-enable (load)
    • Read-enable (output enable)

Previous slide

Next slide

Back to first slide

View graphic version