Y-chart and RTL tips

Digital IC design and vlsi notes

Y-chart and RTL tips

source: this video

Gajski-Kuhn chart

y-chart

rtl-vs-behav-model

Linting

  • After writing RTL code, run a linting tool on the code to check for RTL style checks
  • Synopsys spyGlass, Mentor Autocheck, questasim

linting

Points to check in RTL code

checklist-of-rtl-code

Blocking and non blocking assignments

  • DONOT MIX BLOCKING AND NON BLOCKING WITHIN SAME ALWAYS BLOCK

blocking-non-blocking

COMB_LOOP

  • feedback in combinational logic

comb-loop

INFERRED LATCHES (implicit)

  • Latches makes problems in timing constraints

implicit-latches

Multiple Drivers

multiple-drivers

FSM DEADLOCK

  • Fsm is stuck in one state

fsm-deadlock