SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The HSDIVIDER module output can be bypassed to obtain the XTALCLK clock input on any HSDIVx_CLKOUTx. For example, on the CORE_PLL, this can be done by programming the register PLL_CORE_HSDIVIDER = 0 in TOP_RCM.
PLL input pins are driven by TOPRCM:<Clock Instance>_SRC_SEL MMRs and the outputs are mapped as status on the TOPRCM:<Clock Instance>_STATUS MMRs.
The PHASELOCK output indicates phase tracking between output clocks (CLKOUT, CLKOUTLDO and CLKDCOLDO) and input clock (CLKINP). PHASELOCK is asserted when internally the phase difference between FBCLK and REFCLK is less than 6-12% of the REFCLK period for 96 continuous REFCLKs.
The PHASELOCK signal of CORE and PER PLL are inverted and connected as corresponding lock loss signal in ESM as shown in the following table:
| Source | Event Mapping | Type | Polarity |
|---|---|---|---|
| PLL_CORE_LOCKLOSS | ESM_LVL_EVENT_25 | Level | High |
| PLL_PER_LOCKLOSS | ESM_LVL_EVENT_26 | Level | High |