#14 always block for sequential logic || always block in Verilog || explained with codes and ckt.
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- Опубліковано 12 січ 2025
- always block for sequentiall logic || always block in Verilog || explained with codes and ckt.
Verilog Language is a very famous and widely used programming language to design digital IC .
In this verilog tutorial always block for sequential logic has been explained in details. How to design a sequential logic using verilog always block has been discussed in simple way
Lesson-1 Why verilog is a popular HDL • #1 Why verilog is a po...
Lesson-2 Operators in verilog(part-1) • #2 Operators in Veril...
Lesson-2 Operators in verilog(part-2) • Operators in Verilog (...
Lesson-2 Operators in verilog(part-3) • Operators in Verilog( ...
Lesson-3 Syntax in verilog • #3 Syntax in Verilog ...
Lesson-4 Data types in verilog • #4 Data types in veril...
Lesson-5 Vector and Array in verilog • #5 {Error:check descri...
Lesson-6 Modules and port in verilog • #6 Module and port de...
Lesson-7 Gate level modelling in verilog • #7 Gate level modelin...
Lesson-8 Dataflow Modeling in verilog • #8 Data flow modeling...
Lesson-9 Behavioral Modeling in verilog • #9 Behavioral modelli...
Lesson-10 Structural Modeling in verilog • #10 How to write veri...
Lesson-11 always block in verilog • #11 always block in V...
Lesson-12 always block for combinational logic • #12 always block for c...
Lesson-13 sequential logic in design • #13{Mistake:check desc...
Lesson-14 always block for sequential logic • #14 always block for s...
Lesson-15 Difference between latch and flip flop • #15 Difference betwee...
Lesson-16 Synchronous and Asynchronous RESET • #16(MISTAKE-Read Descr...
Lesson-17 Delays in verilog • #17 Delays in verilog ...
Lesson-18 Timing control in verilog • #18 Timing control in ...
Lesson-19 Blocking and Nonblocking assignment • #19 Blocking vs Non Bl...
Lesson-20 inter and intra assignment delay in verilog • #20 Inter and intra as...
Lesson-21 Why delays are not synthesizable • #21 Why delays are not...
Lesson-22 TESTBENCH writing in verilog • #22 How to write TESTB...
Lesson-23 Multiple always block in verilog • #23 Multiple ALWAYS bl...
Lesson-24 INITIAL block in verilog • #24 INITIAL block in v...
Lesson-25 Difference between INITIAL and ALWAYS block in verilog • #25 Difference between...
Lesson-26 if else in verilog • #26 if-else in verilog...
Lesson-27 CASE statement in verilog • #27 "case" statement i...
Lesson-28 CASEX and CASEZ in verilog • #28 casex vs casez in ...
Lesson-29 FOR loop in verilog • #29 "for" loop in veri...
Lesson-30 WHILE loop in verilog • #30 "while" loop in ve...
Lesson-31 FOREVER in verilog • #31 " forever " in ver...
Lesson-32 REPEAT in verilog • #32 " repeat " in veri...
Lesson-33 GENERATE in verilog • #33 "generate" in veri...
Lesson-34 FORK-JOIN in verilog • #34 " fork and join " ...
Lesson-35 named block in verilog • #35 Named block in ver...
Lesson-36 TASK in verilog • #36 (MISTAKE-Read Desc...
Lesson-37 FUNCTION in verilog • #37 (MISTAKE-Read Desc...
Lesson-38 WIRE vs REG in verilog • #38 Wire vs Reg | when...
Lesson-39 FSM-MEALY state machine in verilog • #39 Finite state machi...
Lesson-40 FSM- MOORE state machine in verilog • #40 Finite state machi...
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All your tutorials are more practical.loved the way you explain
Best verilog tutorial. God bless u
Good one . Thanks
Thanks sir.good explaination**
Thank you so much, sir!
Welcome. Happy learning.
at 9:00 both the always block start at the same time ??
Yes
how out_n=out is not gate in the e.g of both combinational and sequential ?
out_n = out
and
out
Time 10:00 seq block can also be given like always @ *
If we write always@* then it won't be called sequential block. It will be a combinational block then.
Sequential block means registering the input data. Register works with clock. Hope you got it.
Thank you sir
sir,
in synch. sequential ckt every memory elements operates on single clk freq. wheres in async. seq. ckt memory elements involved operates on different clk freq. so when an asynch. clr or preset signal is provided to either of the ckt, irrespective of clk signal, the output of the ckts becomes 0 or 1 respectively. Means asynch clr or preset signals are independent of clk. so in 15:33 why can't we consider reset as a sensitivity variable while creating a synch. seq. ckt? I'm sorry for this long essay😐........
i think 15:33 is the example of synch. seq ckt with synch. clr signal
and 16:28 is the example of synch. seq ckt with asynch. clr signal.
First ckt is for synchronous reset logic where reset depends on clock signal and second ckt is for asynchronous reset logic where reset doesn't depend on clock signal. These are verilog concepts and not exactly digital concepts. This is called synchronous and asynchronous reset and not synchronous or asynchronous sequential ckt. Hope it helps.
@@ComponentByte yes, sir btw thanks for all these videos I'm a fresh btech grad. I don't had any idea, after the graduation what to do? I came across your channel which helped me to set a career goal and motivated me to work hard to be the best. I've completed Digital and now I'm studying verilog. Can you please suggest, from where should I start studying for sys-verilog? Thank YOU....😍
and sir, is it necessary to learn everything of CMOS like abstraction to operation for design & verification role? In a recent interview for DV role they asked me CMOS questions only😓😓
For verification CMOS knowledge is not required but during interview they may test your B.tech technical knowledge and hence they may ask B.tech level courses. Don't worry, they won't evaluate you based on that knowledge. Whether it's digital design or verification it's always digital and logic skill they are interested in , if it's for freshers job. To learn SV there are plenty of resources available on internet and best is testbench.in. But you need a SV tools to practice it. If you try then free version of questasim will be available in torrent or any other websites. Try for it if you want to learn. If you have verilog knowledge then you can very easily learn SV. SV is more software coding than hardware coding. So learn C ++. It's compulsory for SV.
is it right to use * in the sensitivity list in the sequential logic???
Better not to use it.
Synthesis software converts verilog code into hardware based on what has been mentioned in sensitivity list.
Very nice
Thank you for your appreciation.
for asynchronous u said there is no clk ........then verilog code for d_asynchronous how we will write posedge clk
Asynchronous means data transfer is not with respect to clock means both are independent. Clock is always there
how two inverter sum up one invertor?
Whole verilog code has only one inverter.
I have divided the whole code into two pieces while explaining and may be this is the confusion.
sir please explain blocking and non blocking assignments.
I have already uploaded a video on the said topic. Please watch it. If you get any doubt you can always ask your query and I will definitely try to solve your query.
@@ComponentByte thnqq sir