SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The time stamp value is a 32-bit value that increments on each CPTS_RFT_CLK rising edge when CPTS_EN bit is set to 1h. When CPTS_EN bit is cleared to 0h, the time stamp value is reset to 0h.
If more than 32-bits of time stamp are required by the application, the host software must maintain the necessary number of upper bits. The upper time stamp value should be incremented by the host when the rollover event is detected.
For test purposes, the time stamp can be written via the time stamp load function (CPSW_CPTS_TS_LOAD_VAL_REG / CPSW_CPTS_TS_LOAD_HIGH_VAL_REG and CPSW_CPTS_TS_LOAD_EN_REG registers).