SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The APLL_PCIE accepts the functional clock from its input multiplexer, which selects between the DPLL_PCIE_REF output clock CLKREF_ADPLL and the clock from the reference clock buffer ACSPCIE output (delivered from outside the device) CLKREF_ACSPCIE. The selection is made by PRCM register PRCM.CM_CLKMODE_APLL_PCIE[7] REFSEL bit as folows:
The APLL module does not have software capabilitites for gating the input clock.