SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
When enabled, the INTR_AGGR will provide a set of Local to Global event conversion registers. Local events may be discrete clock synchronous pulses or clock synchronous rising edges. The counting mode is configurable on a 'per pin' basis. In pulsed mode, the module will track how many outstanding clock cycle long pulses have been observed on each of the provided levi interface pins. For each cycle in which a LEVI input pending bit is asserted the corresponding counter will be incremented by 1. In 'rising edge' mode, the number of rising edge transitions on the pin is counted.
The module will generate egress Global events on its egress ETL, with a different global index configured for each ingress LEVI pin. The LEVI pins numbers (1-N) are converted to arbitrary global event indices via the global event mapping UDMA_INTA_MAP_j registers. The egress Global events can themselves be mapped to re-enter the INTR_AGGR's Global Event Counting block, so that the counts can then be made visible to software in the GEVI count registers as described in Section 10.2.7.3.1.3. The event routing is handled by an external event switch fabric.