SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Extended duration sleep is an explicitly requested powerdown mode handshaking with the device-level PRCM. As a result, the EVE input clocks are gated. The EVE subsystem is able to latch new interrupts and wake-up requests while in this clock gated state. Internal state is retained, including ARP32 registers, ARP32 data SRAM and program cache contents, VCOP state, EDMA registers, PaRAM, EVE level registers, and so forth.
Since the EVE subsystem has only one logical clock domain (even though divided clocks are used) the PRCM only gates clocks to the EVE subsystem after all of the appropriate handshakes (that is IDLE, STANDBY, and OCP Disconnect) are concluded and the EVE subsystem is in a completely IDLE, STANDBY, and DISCONNECTED state.