SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
After power up, the DPLL_SATA.SYSRESETN input is automatically pulled low by PRM, together with DPLLCTRL_SATA.RESET_N input. Because PRM.L3INIT_RST is an asynchronous reset, the DPLL_SATA input clock (DPLL_SATA.CLKINP) is not demanded upon reset. The LOSSREF signal, which monitors the presence of CLKINP clock, remains 1 during SYSRESETN = 0 irrespective of presence/absence on the CLKINP clock. If CLKINP is present upon reset assertion, the LOSSREF signal is deasserted to 0, a certain time after the hardware reset completion. During DPLL power-up mode, CLKDCOLDO clock is maintained inactive (pulled low). After POR, the DPLL_LOCK (internal lock loop) signal is maintained deasserted, too.