Recently my customer realized the DLY1 seems to be off, consistently being 0.7ms rather than 1ms.
We've confirmed with their software team that the register is set to its default of 00b.
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Recently my customer realized the DLY1 seems to be off, consistently being 0.7ms rather than 1ms.
We've confirmed with their software team that the register is set to its default of 00b.
Nick,
The timing is from start-to-start, not end-to-start.
As soon as a DCDCx or LDOx is enabled, that’s the Strobe point, and the timer starts.
When the timer expires, the next Strobe occurs, and the next DCDCy or LDOy is enabled.
The sequencer does not wait until it receives an internal power-good (PGx) signal before the timer starts.
Yes, this is within the expected timing variation. I would expect +/-10% based on the OSCILLATOR spec in the PMIC datasheet (9 MHz typical).
940us = 1ms - 6%