Primary debug scenario

Symptom: Write burst hangs. AW channel completes. W beats stop after 2 of 4. B never returns.

Triage steps

1. Check W channel: are remaining beats being sent? Is WVALID stuck low?

2. Verify WLAST on the correct beat — missing WLAST stalls the slave forever.

3. Check if a width converter is splitting the burst and losing count.

4. Verify AWLEN matches actual W beat count.

5. If interconnect: check if W beats route to the correct slave port.

Common pitfalls

• Checking only AW without following W channel completion.

• WLAST missing or on wrong beat.

• Bridge dropping W beats during width conversion.