SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The PIPE_PCLK clock which drives the PIPE3 logic is sourced by the on-chip USB3_PHY. The PIPE interface is source-synchronous (that is, the clock is received from the PHY), used to synchronize USB1 PIPE inputs, and reflected back along with the PIPE outputs as the PIPE_MCLK. The PIPE_PCLK clock is turned on/off according to the USB3_PHY power control port. For more details, see Section 26.2.4.2.3, USB3_PHY Power Management.