SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
If the TIOCP_CFG[3:2] IDLEMODE bit field sets the smart-idle mode or smart-idle with wakeup mode, the timer evaluates its internal capability to have the interface clock switched off. When there is no further internal activity (no pending interrupt sources: match, overflow, or timer capture events), the idle acknowledge signal is asserted and the timer enters sleep mode, ready to issue a wake-up request if is configured in smart-idle with wakeup mode. This wake-up request is sent only if the IRQWAKEEN[2:0] bit field enables the timer wake-up capability.
Figure 22-8 shows the wake-up request generation. For more information about the GP timer clock control, see Clock Management Functional Description, in Power, Reset, and Clock Management.
When the wake-up event is issued, the associated interrupt status bit is set in the timer status register (IRQSTATUS). The pending wake-up event is reset when the set status bit is overwritten with 1.
The status bit must be reset to re-enter idle mode.