SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
After power up, the DPLL_PCIE_REF.SYSRESETN input is automatically pulled low by the PRM, together with the APLL_PCIE.RESETN input. Because PRM.COREAON_PWRON_RST is an asynchronous reset, the DPLL_PCIE_REF input clock (DPLL_PCIE_REF.CLKINP) is not demanded upon reset. During DPLL power-up mode, CLKOUTLDO clock is maintained inactive (pulled low). After power-up reset, the DPLL_LOCK (internal lock loop) signal is maintained deasserted, too. The default value of the mode select register bit field PRCM.CM_CLKMODE_DPLL_PCIE_REF[2:0] DPLL_EN puts the DPLL_PCIE_REF in Idle Bypass Low Power mode. It is software responability to change the state of the DPLL_PCIE_REF to desired mode after PRCM reset.