SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
Auto ideal sample time selection is bypassed, IDEAL_SAMPLE_TIME_OVR(register REGS_SAMPLE_CFG1_x[31:24]) register is used to decide sample time.
Note that in Modes 0 to 2, when the hardware loop detects the IDEAL_SAMPLE_TIME, the loop will also fill out 20 histogram registers. If the ideal sample location is close to 0, with a noisy signal sometimes the loop may converge to 19, or to 0. The average will give an incorrect value of 10 for the ideal sample time location. To avoid this, it’s recommended to check the histogram registers (OBS_PEAKHISTOGRAM). Then software can decide which point to take as ideal sample time location, and program that with IDEAL_SAMPLE_MODE = 3.