8/21/2020 0 Comments 4 Bit Shift Register Verilog
The left hand side of the operator contains the variable to shift, the right hand side of the operator contains the number of shifts to perform.The shift operator is a quick way to create a Shift Register.The arithmetic shift preserves the sign of the MSB of your variable.
This is useful for inputs that are signed (can be positive or negative). Later on in your code, if you look for InputDelay3 it will show the same thing that was on Input 4 clock cycles ago. User dashboard under chipverify.comconnect will be deprecated from Oct 1, 2020, Read More. 4 Bit Shift Register Verilog Full Adder SingleLet us contribute to a cleaner Earth, Go Green Updated: May 31, 2020 Verilog Tutorial Contents Ch1: Introduction What is Verilog Introduction to Verilog Chip Design Flow Chip Abstraction Layers Ch2: Data Types Verilog Syntax Verilog Data types Verilog ScalarVector Verilog Arrays Ch3: Building Blocks Verilog Module Verilog Port Verilog Module Instantiations Verilog assign statements Verilog assign examples Verilog Operators Verilog always block Combo Logic with always Sequential Logic with always Verilog initial block Verilog in a nutshell Verilog generate Verilog Sequence Detector Verilog Pattern Detector Ch4: Behavioral modeling Verilog Block Statements Verilog Assignment Types Verilog BlockingNon-blocking Verilog Control Flow Verilog for Loop Verilog case Statement Verilog Functions Verilog Tasks Verilog Parameters Verilog ifdef elsif Verilog Delay Control Verilog InterIntra Delay Ch5: GateSwitch modeling Gate Level Modeling Gate Level Examples Gate Delays Switch Level Modeling User-Defined Primitives Ch6: Simulation Verilog Simulation Basics Verilog Timescale Verilog Timescale Scope Verilog Timeformat Verilog Scheduling Regions Verilog Display tasks Code Examples Hello World Flops and Latches JK Flip-Flop D Flip-Flop T Flip-Flop D Latch Counters 4-bit counter Ripple Counter Straight Ring Counter Johnson Counter Mod-N Counter Gray Counter Misc n-bit Shift Register Priority Encoder 4x1 multiplexer Full adder Single Port RAM n-bit Bidirectional Shift Register Design Hardware Schematic Testbench In digital electronics, a shift register is a cascade of flip-flops where the output pin q of one flop is connected to the data input pin (d) of the next. Because all flops work on the same clock, the bit array stored in the shift register will shift by one position. For example, if a 5-bit right shift register has an initial value of 10110 and the input to the shift register is tied to 0, then the next pattern will be 01011 and the next 00101. Design This shift register design has five inputs and one n-bit output and the design is parameterized using parameter MSB to signify width of the shift register. This shift register has a few key features: Can be enabled or disbled by driving en pin of the design Can shift to the left as well as right when dir is driven If rstn is pulled low, it will reset the shift register and output will become 0 Input data value of the shift register can be controlled by d pin. The design is instantiated into the top module and the inputs are driven with different values. The design behavior for each of the inputs can be observed at the output pin out. The time when it shifts its direction is highlighted in yellow. Submit General Blog Login Tutorials Discussion Forum Contact Us Tutorials Verilog SystemVerilog UVM SoC Code Examples Interview Questions Quiz Latest Verilog Articles Verilog User Defined Primitives Verilog Timeformat Verilog Timescale Scope Verilog Inter and Intra Assignment Delay Verilog Delay Control Latest SV Articles SystemVerilog Ch1 Quiz SystemVerilog Assertions with time delay SystemVerilog rose, fell, stable SystemVerilog Assertions SystemVerilog Testbench Example Adder Latest UVM Articles UVM AHB-L Master Agent Part 2 UVM AHB-L Master Agent Part I UVM APB Agent UVM Verification Testbench Example TLM Non-blocking Get Port 2015 - 2020 ChipVerify Contact Privacy Policy Terms Conditions You consent to our cookies if you continue to use our website. I accept cookies from this site.
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