1
Skid Buffer
NOT SUBMITTED
Networks-on-Chip (NoC) and elastic pipelines have as a fundamental building block, a handshaking mechanism where each end of a link can signal if they have data to send ("valid"), or if they are able to receive data ("ready"). When both ends agree (valid and ready both high), a data transfer occurs on that clock cycle.
While working on one such protocol in a NoC, the Physical Design team complains of timing pressure on the "ready" signal between the requester (ingress port) and the completer (egress port)...
Interface Definition
i_valid_i : Input valid from the ingress port
i_data_i : Data from the ingress port
i_ready_o : Registered ready output to the ingress port
e_ready_i : Egress port ready input
e_valid_o : Valid output to the egress port
e_data_o : Data to the egress port.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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Sublime
Emacs
Sublime
Vim
System Verilog
Verilog
VHDL
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