SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
A Sync on External Event descriptor ensures an external event has occurred before proceeding. The external event can be a write to a bit of the VPE_LIST_STAT_SYNC register or other external events that are determined at VPDMA elaboration to have occurred. This descriptor can be used to allow for external software to control progression of the list. The descriptor can also be used to select external signals that are brought into the VPDMA. The current implementation just synchronize on the VPE_LIST_STAT_SYNC bit for the list number that called the descriptor.
Bits | Name | Description |
---|---|---|
31:27 | Packet Type | Host Packet Descriptor Type = Ch |
26:4 | Reserved | Reserved |
3:0 | Control | Control type = 2h |