Datapath Components

1. Datapath Component Design
   1. Understand the functions of each of the following datapath components.
   2. Be able to implement each of the following datapath components from gates and/or flip-flops.
   3. Be able to draw a timing diagram for the outputs of each component, if the inputs are given.
   • Mulitplexor
   • Decoder
   • Register
     1. Parallel load
     2. Shift left/right
     3. Hold value
     4. Set, Reset
   • Ripple-carry adder
     1. full adder/half adder
   • Subtractor
     1. full subtractor/half subtractor
   • Shifters
     1. fixed shifters
     2. barrel shifters
   • Comparators
     1. Ripple-carry style
   • Counters
     1. Up, down, up/down
     2. Terminal count
     3. Parallel load
     4. Timer
   • Incrementer/Decrementer
   • Array Multiplier
   • Two's Complement Adder/subtractor
   • Arithmetic Logic Units
     1. Arithmetic functions vs. Logic functions
   • Register Files
     1. Read port, write port, read/write enables
2. Simple Datapaths - Be able to combine datapath components to implement simple functions
   Examples:
   • Output the minimum of two numbers
   • Output the average of 4 numbers
   • Output the median of 3 numbers