Visible to Intel only — GUID: ink1675368438450
Ixiasoft
Visible to Intel only — GUID: ink1675368438450
Ixiasoft
4.3.4.3.1.6. PMU snapshot Interface for TCU
This interface is for debugging TCU performance monitors. SoC debug unit requests for snapshot of performance monitor counters.
Signal Name |
IO |
Connectivity |
Description |
---|---|---|---|
pmusnapshot_req |
I |
Connected from CoreSight Debug Engine |
PMU (Performance Monitoring Unit) snapshot request. The PMU snapshot occurs on the rising edge of pmusnapshot_req |
pmusnapshot_ack |
O |
Connected to CoreSight Debug Engine |
PMU snapshot acknowledge. The TCU uses this signal to acknowledge that the PMU snapshot has occurred. |
As pmusnapshot_req is coming from different clock domain, there is double-flop synchronizer logic added before it gets consumed inside the TCU as shown in the following figure.
The pmusnapshot_req is expected to be high more than two cycles of SMMU (aclk) clock.