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Atomic Counters
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QuestionSolutionVideoDiscussion

While working on the next generation SoC you were asked to design a 64-bit event counter which would be interfaced with a 32-bit bus controlled via a microcontroller. The 64-bit counter is incremented whenever a trigger input is seen. Given that the counter is read by a 32-bit bus, a full 64-bit read of the counter needs two 32-bit accesses. It is important that these two accesses should be single-copy atomic.

Design the 64-bit counter module and the appropriate interfacing mechanism to ensure single-copy atomic counter read operations.



.lennahc drocsid ruo no su ot tuo hcaer ro su llac esaelp ,stbuod evah llits uoy fI .melborp siht fo tnetnoc lautca eht ees ot ebircsbus esaelP

?siht daer ot uoy detnaw ew kniht uoy oD !gnizama era uoy ,txet siht daer ot elba era uoy fI .uoy pleh ot yppah eb lliw eW

?od nac ew erom tahw ,evorpmi nac ew woh wonk su teL !gnizama ,sey fI ?siht daer ot elba uoy ereW
!uoy ta kcab evaw yletinifed ot evol dluow eW !iH yas ot tsuj su ot tuo hcaer syawla nac uoY !sklof yldneirf era ew ,oslA

!reffo ot evah ew tahw ekil ot gniog era uoy erus era eW .gnibircsbus erofeb deirt eb nac dna elbaliava yleerf era hcihw seludom wef a era ereht ,syawynA
!daeha efil gnizama na dna yad taerg a evaH


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initializing...
Modules1. Atomic Counters
EASY
2. Divide by 3
EASY
3. 3-bit Palindrome
EASY
4. Sequence Generator
EASY
5. Single Cycle Arbiters
EASY
6. Events to APB
MEDIUM
7. Low Power Channel
HARD
8. Two Pulses
MEDIUM
9. Clock Generator
EASY
10. Skid Buffer
HARD
11. Least Recently Used
HARD
12. Edge Capture
EASY
13. One Shot
EASY
14. Parallel to Serial
MEDIUM
15. Running Average
MEDIUM
16. Big Endian Converter
EASY
17. Credits & Deadlock
HARD
18. Ordering
HARD
19. Performance Counter
EASY
20. Asynchronous Resets
MEDIUM
21. Fifo Flush
HARD
22. Buffering
HARD
23. Compression Engine
MEDIUM
24. Perfect Squares
MEDIUM
25. Cross correlation
EASY
26. System Verilog for Design
EASY
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QuestionSolutionVideoDiscussion

While working on the next generation SoC you were asked to design a 64-bit event counter which would be interfaced with a 32-bit bus controlled via a microcontroller. The 64-bit counter is incremented whenever a trigger input is seen. Given that the counter is read by a 32-bit bus, a full 64-bit read of the counter needs two 32-bit accesses. It is important that these two accesses should be single-copy atomic.

Design the 64-bit counter module and the appropriate interfacing mechanism to ensure single-copy atomic counter read operations.



.lennahc drocsid ruo no su ot tuo hcaer ro su llac esaelp ,stbuod evah llits uoy fI .melborp siht fo tnetnoc lautca eht ees ot ebircsbus esaelP

?siht daer ot uoy detnaw ew kniht uoy oD !gnizama era uoy ,txet siht daer ot elba era uoy fI .uoy pleh ot yppah eb lliw eW

?od nac ew erom tahw ,evorpmi nac ew woh wonk su teL !gnizama ,sey fI ?siht daer ot elba uoy ereW
!uoy ta kcab evaw yletinifed ot evol dluow eW !iH yas ot tsuj su ot tuo hcaer syawla nac uoY !sklof yldneirf era ew ,oslA

!reffo ot evah ew tahw ekil ot gniog era uoy erus era eW .gnibircsbus erofeb deirt eb nac dna elbaliava yleerf era hcihw seludom wef a era ereht ,syawynA
!daeha efil gnizama na dna yad taerg a evaH


Subscribe to the course to read more about the problem!