Resets: The Timing Event You Forgot

Sat, 03 Jan 2026 20:01:00 +0000

Timing Series: Part 6 of 6

Previous: CDC: Two Flip-Flops Are Not Magic

The Flop That Didn’t Reset

You’re debugging a sporadic startup failure. The system initializes correctly nine times out of ten. On the tenth, one module starts in a corrupted state while everything else works fine. The state machine begins in an illegal state. The counter starts at 7 instead of 0. The FIFO pointers are misaligned.

You add more reset logic. You connect the reset to more flip-flops. The problem gets worse.

Removal on bitwiz

Resets: The Timing Event You Forgot

The Flop That Didn’t Reset