SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The DPLL_PCIE_REF module supports two types of low power mode controlled by the PRCM register PRCM.CM_CLKMODE_DPLL_PCIE_REF[2:0] DPLL_EN bits.
The low-power modes supported by DPLL_PCIE_REF are Idle-bypass low-power and Low Power Stop modes, which are both characterized by:
For more details on the DPLL settings and conditions necessary to enter Idle-bypass and Low Power Stop modes, see Section 26.4.4.4.1.6.4, PCIe PHY DPLL Idle-bypass low-power Mode, and Section 26.4.4.4.1.6.5, PCIe PHY DPLL Low Power Stop Mode.
DPLL_PCIE_PHY is held in a similar low-power state (DCO and LDO switched off, with CLKOUTLDO = 0) after Power-up Reset.